Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
983
FNUS55 KRIW 181044
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
443 AM MDT Fri Apr 18 2025
.DISCUSSION...
***This product is currently automated with no discussion
and will not be refreshed with all forecast updates. It should
be used for planning purposes only. If you need additional fire
weather information, please contact the NWS office in Riverton,
Wyoming. The human written discussion section along with the fire
weather forecast will resume regular operations sometime in
Spring 2025.***
---Thunderstorms imply strong gusty and erratic winds---
WYZ280-182200-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy. Snow showers in the morning.
Scattered snow showers in the afternoon. Patchy
blowing snow late in the morning. Snow
accumulation of 1 to 3 inches. Chance of snow
90 percent.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......3 degrees warmer.
Min humidity........67-73 percent.
24 hr trend......12 percent drier.
20-foot winds.......Northeast winds 15 to 20 mph. Gusts up to 30
mph until 1500, then 20 mph.
Ridge top winds.....Northeast 20 to 25 mph until 1600, then north
around 15 mph.
Chc of wetting rain.50 percent until 1200, then 10 percent.
Transport winds.....Northeast 20 to 25 mph until 1600, then around
15 mph.
Mixing Height.......1000-3000 ft agl until 1100, then 3400-4200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....12-17.
24 hr trend......7 degrees cooler.
Max humidity........84-90 percent.
24 hr trend......14 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph until 2200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2200, then southwest.
Mixing Height.......1800-3600 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......8 degrees warmer.
Min humidity........53-59 percent.
24 hr trend......13 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......400-2200 ft agl until 1200, then 2400-3200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the lower 20s. Southwest
winds around 10 mph.
.SUNDAY...Partly cloudy. Lows around 30. Highs in the upper 40s.
Southwest winds around 10 mph.
.MONDAY...Partly cloudy with isolated showers. Lows in the upper
20s. Highs in the mid 50s. Southwest winds around 15 mph.
.TUESDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
50s. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers and isolated snow
showers. Lows in the mid 30s. Highs in the upper 50s.
.THURSDAY...Partly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the upper 50s.
$$
WYZ283-182200-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy. Snow
showers in the morning, then scattered snow
showers in the afternoon. Patchy blowing snow
early in the afternoon. Snow accumulation up to
3 inches. Chance of snow 90 percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......3 degrees warmer.
Min humidity........61-67 percent.
24 hr trend......10 percent drier.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.45 percent until 1200, then 10 percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1100, then 3200-4200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....13-18.
24 hr trend......6 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......16 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....North around 10 mph until 2000, then southwest
until 0300, then southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2000, then
southwest.
Mixing Height.......1600-3600 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....41-46.
24 hr trend......7 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 20s. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy with isolated showers and snow showers.
Lows in the upper 20s. Highs in the upper 40s. Winds generally
less than 10 mph.
.MONDAY...Mostly clear with scattered showers and snow showers.
Lows in the upper 20s. Highs in the lower 50s. West winds around
15 mph.
.TUESDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
50s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Isolated showers and snow showers.
Lows in the mid 30s. Highs in the upper 50s.
.THURSDAY...Mostly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the mid 50s.
$$
WYZ285-182200-
South Bighorn Mountains-
443 AM MDT Fri Apr 18 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Cloudy then becoming partly cloudy. Snow
showers early in the morning, then numerous
snow showers early in the morning. Scattered
snow showers early in the afternoon. Snow
accumulation of 1 to 5 inches. Chance of snow
80 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......3 degrees warmer.
Min humidity........60-66 percent.
24 hr trend......11 percent drier.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.50 percent until 1200, then 30 percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......200-2000 ft agl until 1000, then 2200-3400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......3 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph until 2200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2000, then southwest.
Mixing Height.......1000-2600 ft agl until 2000, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......8 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......19 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with higher gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 20s. Southwest
winds around 10 mph.
.SUNDAY...Partly cloudy with isolated snow showers. Lows in the
lower 30s. Highs in the mid 40s. Southwest winds around 10 mph.
.MONDAY...Partly cloudy with scattered showers and snow showers.
Lows in the upper 20s. Highs in the upper 40s. West winds around
15 mph.
.TUESDAY...Partly cloudy with isolated snow showers. Lows around
30. Highs in the upper 40s. Northwest winds around 10 mph.
.WEDNESDAY...Mostly cloudy. Scattered showers and snow showers.
Lows in the mid 30s. Highs in the lower 50s.
.THURSDAY...Mostly cloudy. Isolated showers and snow showers in
the morning, then scattered showers in the afternoon. Highs
around 50.
$$
WYZ281-182200-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers in the morning, then
isolated snow showers in the afternoon. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......6 degrees warmer.
Min humidity........52-58 percent.
24 hr trend......27 percent drier.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.15 percent until 1200, then zero percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......800-2600 ft agl until 1000, then 3400-5400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......4 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph until 2100. Southwest
after 0200.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph until 2100. Southwest
after 2400.
Mixing Height.......2400-4200 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......13 degrees warmer.
Min humidity........38-44 percent.
24 hr trend......21 percent drier.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph until 1500, then around 20 mph with
gusts to around 30 mph.
Ridge top winds.....South 15 to 20 mph until 1400, then 20 to 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph until 1400, then 20 to 25
mph.
Mixing Height.......400-2000 ft agl until 1100, then 2800-4800 ft
agl.
Smoke dispersal.....Good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the upper 20s. Southwest
winds around 10 mph.
.SUNDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 50s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy with scattered showers. Lows in the lower
30s. Highs in the upper 50s. West winds around 15 mph.
.TUESDAY...Partly cloudy with isolated showers. Lows in the lower
30s. Highs in the mid 50s. North winds around 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers. Lows in the mid
30s. Highs in the upper 50s.
.THURSDAY...Mostly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the mid 50s.
$$
WYZ282-182200-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Numerous snow showers early in the morning,
then scattered snow showers in the late morning
and early afternoon. Isolated snow showers late
in the afternoon. Snow accumulation up to 2
inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......7 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......28 percent drier.
20-foot winds.......Northwest winds 10 to 15 mph with higher gusts.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.25 percent until 1200, then 5 percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1100, then 3200-5200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....13-18.
24 hr trend......4 degrees cooler.
Max humidity........71-77 percent.
24 hr trend......25 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2000, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2000, then south.
Mixing Height.......3400-4200 ft agl until 1900, then 400-2000 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....40-45.
24 hr trend......8 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the upper
20s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 50s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy with scattered showers. Lows around 30.
Highs in the upper 50s. West winds around 10 mph.
.TUESDAY...Partly cloudy. Lows in the lower 30s. Highs in the mid
50s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers. Lows in the mid
30s. Highs around 60.
.THURSDAY...Mostly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the upper 50s.
$$
WYZ275-182200-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers early in the morning.
Isolated snow showers late in the morning, then
scattered snow showers early in the afternoon.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......7 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......23 percent drier.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 25 mph.
Ridge top winds.....Northwest 20 to 25 mph until 1700, then around
15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 20 to 25 mph until 1700, then around 15
mph.
Mixing Height.......600-2200 ft agl until 1000, then 5000-7000 ft
agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......3 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......15 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph until 2200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2200, then south.
Mixing Height.......3200-5200 ft agl until 2000, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2000, then poor.
.SATURDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....43-48.
24 hr trend......10 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southeast winds 10 to 15 mph. Gusts up to 20
mph until 1200, then 25 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 2600-4000 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the lower
30s. Southeast winds around 10 mph.
.SUNDAY...Partly cloudy. Isolated showers and snow showers. Lows
in the lower 30s. Highs in the mid 50s. Winds generally less than
10 mph.
.MONDAY...Partly cloudy with numerous showers, isolated
thunderstorms and snow showers. Lows in the lower 30s. Highs in
the upper 50s. West winds around 10 mph.
.TUESDAY...Partly cloudy. Isolated showers and snow showers. Lows
in the lower 30s. Highs in the mid 50s. Winds generally less than
10 mph.
.WEDNESDAY...Partly cloudy with isolated showers. Lows in the mid
30s. Highs in the upper 50s.
.THURSDAY...Partly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the upper 50s.
$$
WYZ276-182200-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers in the morning. Isolated
snow showers late in the morning. Chance of
snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......9 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......28 percent drier.
20-foot winds.......North winds 15 to 20 mph. Gusts up to 30 mph
until 1500, then 20 mph.
Ridge top winds.....North 20 to 25 mph until 1600, then around 15
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North 20 to 25 mph until 1600, then around 15
mph.
Mixing Height.......1000-3000 ft agl until 1000, then 4200-6200 ft
agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......Unchanged.
Max humidity........58-64 percent.
24 hr trend......27 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph until 2100, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2100, then southwest.
Mixing Height.......3200-4800 ft agl until 2000, then 600-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....48-53.
24 hr trend......15 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......9 percent drier.
20-foot winds.......Southwest winds around 10 mph until 1200, then
southeast. Gusts up to 20 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph until 1300, then south
15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1100, then 2800-4800 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cool. Partly cloudy. Lows in the mid
30s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Scattered snow showers and isolated
showers. Lows in the lower 30s. Highs in the lower 50s. Southwest
winds around 10 mph.
.MONDAY...Partly cloudy with numerous showers, snow showers and
isolated thunderstorms. Lows in the upper 20s. Highs in the lower
50s. West winds around 15 mph.
.TUESDAY...Partly cloudy. Isolated showers and snow showers. Lows
in the lower 30s. Highs in the lower 50s. Northwest winds around
10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers and isolated snow
showers. Lows in the mid 30s. Highs in the mid 50s.
.THURSDAY...Mostly cloudy. Isolated showers and snow showers in
the morning, then scattered showers in the afternoon. Highs in
the lower 50s.
$$
WYZ287-182200-
Owl Creek Mountains-
443 AM MDT Fri Apr 18 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow until late afternoon. Snow
showers in the morning. Scattered snow showers
in the afternoon. Snow accumulation of 1 to 5
inches. Chance of snow 90 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......6 degrees warmer.
Min humidity........52-58 percent.
24 hr trend......20 percent drier.
20-foot winds.......North winds around 20 mph with gusts to around
30 mph until 1500, then around 10 mph with
higher gusts.
Ridge top winds.....North 20 to 25 mph until 1600, then around 15
mph.
Chc of wetting rain.55 percent until 1200, then 5 percent.
Transport winds.....North 20 to 25 mph until 1600, then around 15
mph.
Mixing Height.......2200-4200 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......2 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......24 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph until 2100, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2100, then southwest.
Mixing Height.......1200-3200 ft agl until 2000, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......9 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......7 percent drier.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph until 1300, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......200-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the upper
20s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Isolated showers and snow showers. Lows
in the lower 30s. Highs in the mid 40s. Southwest winds around
10 mph.
.MONDAY...Mostly clear with scattered showers and snow showers.
Lows in the upper 20s. Highs in the lower 50s. West winds around
15 mph.
.TUESDAY...Partly cloudy. Lows in the lower 30s. Highs in the
upper 40s. North winds around 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers and isolated snow
showers. Lows in the mid 30s. Highs in the lower 50s.
.THURSDAY...Mostly cloudy. Isolated showers and snow showers in
the morning, then scattered showers in the afternoon. Highs in
the lower 50s.
$$
WYZ286-182200-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
443 AM MDT Fri Apr 18 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers until late afternoon.
Isolated snow showers late in the afternoon.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......6 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......13 percent drier.
20-foot winds.......Northeast winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.15 percent until 1200, then 5 percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1000, then 3400-5400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......2 degrees warmer.
Max humidity........58-64 percent.
24 hr trend......24 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
west around 10 mph. Gusts up to 20 mph.
Ridge top winds.....North around 15 mph until 2100, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2100, then west.
Mixing Height.......2200-4000 ft agl until 2000, then 400-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......13 degrees warmer.
Min humidity........34-40 percent.
24 hr trend......10 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......2000-4000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 20s. West winds
around 10 mph.
.SUNDAY...Partly cloudy. Scattered snow showers and showers. Lows
in the upper 20s. Highs in the lower 40s. West winds around
10 mph.
.MONDAY...Partly cloudy with snow showers and isolated
thunderstorms. Lows in the lower 20s. Highs around 40. West winds
around 15 mph.
.TUESDAY...Partly cloudy. Isolated snow showers. Lows in the mid
20s. Highs in the lower 40s. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with scattered snow
showers and showers. Lows in the upper 20s. Highs in the mid 40s.
$$
WYZ140-182200-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......8 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......21 percent drier.
20-foot winds.......Northeast winds around 10 mph with higher
gusts.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph.
Mixing Height.......400-2200 ft agl until 1000. 5200-6600 ft agl
after 1300.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear.
Chance of thunder...0 percent.
Min temperature.....12-17.
24 hr trend......1 degree warmer.
Max humidity........63-69 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North 10 to 15 mph until 0100, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph until 2300, then east until
2400, then south.
Mixing Height.......3200-5200 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....44-49.
24 hr trend......10 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph until 1400, then west.
Mixing Height.......1800-3800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Mostly cloudy. Isolated snow
showers after midnight. Lows in the mid 20s. Winds generally less
than 10 mph.
.SUNDAY...Numerous snow showers. Lows in the mid 20s. Highs in
the lower 40s. Southwest winds around 10 mph.
.MONDAY...Partly cloudy. Snow showers and isolated thunderstorms.
Lows around 17. Highs in the upper 30s. Southwest winds around
10 mph.
.TUESDAY...Partly cloudy with isolated snow showers. Lows in the
lower 20s. Highs in the lower 40s. Winds generally less than
10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with scattered snow
showers and showers. Lows in the mid 20s. Highs 45 to 50.
$$
WYZ415-182200-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers. Chance of snow 40
percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......2 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......14 percent drier.
20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 25
mph until 1500, then 15 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......600-2200 ft agl until 1000. 4400-6000 ft agl
after 1200.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....8-13.
24 hr trend......2 degrees cooler.
Max humidity........71-77 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast 10 to 15 mph until 0400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph until 2300. South after
0400.
Mixing Height.......2600-4600 ft agl until 2000, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......7 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds west
around 10 mph with higher gusts after 1500.
Ridge top winds.....Northeast around 10 mph until 0700, then south
until 0900, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 0900, then west.
Mixing Height.......2000-4000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Mostly cloudy. Lows in the mid
20s. Winds generally less than 10 mph.
.SUNDAY...Mostly cloudy. Numerous snow showers and scattered
showers. Lows in the mid 20s. Highs in the lower 40s. Southwest
winds around 10 mph.
.MONDAY...Partly cloudy with numerous snow showers and isolated
thunderstorms. Lows around 18. Highs in the upper 30s. Southwest
winds around 15 mph.
.TUESDAY...Partly cloudy. Isolated snow showers. Lows in the
lower 20s. Highs in the lower 40s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with scattered snow showers and
showers. Lows in the upper 20s. Highs in the upper 40s.
.THURSDAY...Mostly cloudy. Scattered snow showers and showers in
the morning, then scattered showers, snow showers and isolated
thunderstorms in the afternoon. Highs in the upper 40s.
$$
WYZ416-182200-
West Wind River Mountains/East Zone Bridger Teton NF-
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Scattered snow showers until late
afternoon. Isolated snow showers late in the
afternoon. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....27-32.
24 hr trend......3 degrees cooler.
Min humidity........44-50 percent.
24 hr trend......11 percent drier.
20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 30
mph until 1500, then 20 mph.
Ridge top winds.....Northeast 20 to 25 mph until 1500, then north
around 15 mph.
Chc of wetting rain.10 percent.
Transport winds.....Northeast 20 to 25 mph until 1500, then around
15 mph.
Mixing Height.......600-2600 ft agl until 1100, then 3400-5400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....5-10.
24 hr trend......3 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......8 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with higher gusts.
Ridge top winds.....North around 10 mph until 0900, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows around 19.
Winds generally less than 10 mph.
.SUNDAY...Mostly cloudy. Scattered snow showers. Lows in the
lower 20s. Highs in the upper 30s. West winds around 10 mph.
.MONDAY...Partly cloudy with numerous snow showers. Lows around
15. Highs in the mid 30s. West winds around 15 mph.
.TUESDAY...Partly cloudy. Isolated snow showers. Lows around 20.
Highs in the upper 30s. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with scattered snow
showers and showers. Lows in the mid 20s. Highs in the mid 40s.
$$
WYZ288-182200-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow early in the
morning. Areas of blowing snow early in the
morning. Patchy blowing snow in the late
morning and early afternoon. Snow showers early
in the morning. Numerous snow showers late in
the morning. Scattered snow showers in the
afternoon. Snow accumulation of 1 to 6 inches.
Chance of snow 90 percent.
Chance of thunder...0 percent.
Max temperature.....24-29.
24 hr trend......Unchanged.
Min humidity........54-60 percent.
24 hr trend......9 percent drier.
20-foot winds.......Breezy. Northeast winds 20 to 25 mph until
1500, then around 15 mph. Gusts up to 40 mph
until 1500, then 25 mph.
Ridge top winds.....Northeast 25 to 30 mph until 1500, then around
20 mph.
Chc of wetting rain.55 percent until 1200, then 25 percent.
Transport winds.....Northeast 25 to 30 mph until 1500, then around
20 mph.
Mixing Height.......400-2200 ft agl until 1000, then 2400-4400 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....6-11.
24 hr trend......2 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 15 mph until 2000, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2100, then west.
Mixing Height.......1400-2800 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......11 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......17 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the lower
20s. West winds around 10 mph.
.SUNDAY...Partly cloudy with scattered snow showers. Lows in the
mid 20s. Highs in the upper 30s. West winds around 10 mph.
.MONDAY...Mostly clear with numerous snow showers. Lows in the
lower 20s. Highs around 40. West winds around 20 mph.
.TUESDAY...Partly cloudy. Isolated snow showers. Lows in the mid
20s. Highs in the lower 40s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers and snow showers.
Lows around 30. Highs in the upper 40s.
.THURSDAY...Mostly cloudy. Isolated showers and snow showers in
the morning, then numerous snow showers and scattered showers in
the afternoon. Highs in the mid 40s.
$$
WYZ414-182200-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy. Numerous snow showers early in
the morning, then scattered snow showers in the
late morning and afternoon. Snow accumulation
up to 3 inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......3 degrees cooler.
Min humidity........50-56 percent.
24 hr trend......5 percent drier.
20-foot winds.......Northeast winds 10 to 15 mph until 1500, then
northwest. Gusts up to 20 mph.
Ridge top winds.....Northeast 15 to 20 mph until 1500, then
northwest.
Chc of wetting rain.15 percent until 1200, then 25 percent.
Transport winds.....Northeast 15 to 20 mph until 1700, then north.
Mixing Height.......800-2800 ft agl until 1100, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers early in the evening,
then isolated snow showers in the evening.
Chance of snow 40 percent.
Chance of thunder...0 percent.
Min temperature.....12-17.
24 hr trend......2 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North 10 to 15 mph until 2200, then northeast
until 0400, then south.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph until 2200, then
southeast until 0300, then south.
Mixing Height.......1800-3800 ft agl until 2000, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......7 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 0700. 10 to 15 mph
after 0900.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1000, then northwest.
Mixing Height.......1800-3800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the mid
20s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Scattered snow showers and numerous
showers. Lows in the mid 20s. Highs in the lower 40s. Southwest
winds around 10 mph.
.MONDAY...Partly cloudy with numerous snow showers and scattered
showers. Lows around 20. Highs around 40. West winds around
15 mph.
.TUESDAY...Partly cloudy. Isolated snow showers. Lows in the mid
20s. Highs in the mid 40s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Scattered showers and snow showers.
Lows around 30. Highs around 50.
.THURSDAY...Mostly cloudy. Isolated showers and snow showers in
the morning, then scattered showers and isolated thunderstorms in
the afternoon. Highs around 50.
$$
WYZ278-182200-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Scattered snow showers in the morning. Isolated
snow showers late in the morning. Patchy
blowing snow in the late morning and early
afternoon. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......2 degrees cooler.
Min humidity........52-58 percent.
24 hr trend......21 percent drier.
20-foot winds.......Northeast winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Northeast 15 to 20 mph until 1500. North after
1700.
Chc of wetting rain.7 percent.
Transport winds.....Northeast around 20 mph.
Mixing Height.......1000-3000 ft agl until 1100, then 3200-5200 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....12-17.
24 hr trend......3 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
northeast until 2400, then downslope/downvalley
4-7 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 15 mph until 2000, then
northeast until 0100, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph until 0200, then northwest.
Mixing Height.......1600-3600 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......8 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......400-2400 ft agl until 1200, then 2400-3400 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 20s. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy with isolated showers and snow showers.
Lows in the mid 20s. Highs in the mid 40s. Winds generally less
than 10 mph.
.MONDAY...Partly cloudy with scattered snow showers and showers.
Lows around 20. Highs in the upper 40s. West winds around 10 mph.
.TUESDAY...Partly cloudy. Lows in the mid 20s. Highs around 50.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Isolated showers and snow showers.
Lows around 30. Highs in the mid 50s.
.THURSDAY...Partly cloudy. Isolated showers and snow showers in
the morning, then scattered showers and isolated thunderstorms in
the afternoon. Highs in the mid 50s.
$$
WYZ277-182200-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
443 AM MDT Fri Apr 18 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Numerous snow showers early in the morning,
then scattered snow showers until late
afternoon. Isolated snow showers early in the
afternoon. Patchy blowing snow early in the
morning. Snow accumulation up to 2 inches.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......4 degrees cooler.
Min humidity........52-58 percent.
24 hr trend......3 percent drier.
20-foot winds.......East winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....East 20 to 25 mph.
Chc of wetting rain.20 percent until 1200, then 10 percent.
Transport winds.....East 20 to 25 mph.
Mixing Height.......1000-3000 ft agl until 1100, then 3000-4800 ft
agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated snow showers early in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....13-18.
24 hr trend......2 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......East winds around 10 mph and gusty until 2400,
then downslope/downvalley 4-7 mph.
Ridge top winds.....East 10 to 15 mph until 0200. Northwest after
0500.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......9 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with higher gusts.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 0900, then northwest.
Mixing Height.......400-2400 ft agl until 1200, then 2400-3800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Partly cloudy. Lows in the upper
20s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy with scattered showers and snow showers.
Lows in the upper 20s. Highs in the upper 40s. West winds around
10 mph.
.MONDAY...Mostly clear with scattered showers and snow showers.
Lows in the mid 20s. Highs in the upper 40s. West winds around
15 mph.
.TUESDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 50s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers and isolated snow
showers. Lows in the lower 30s. Highs in the upper 50s.
.THURSDAY...Mostly cloudy. Isolated showers in the morning, then
scattered showers and isolated thunderstorms in the afternoon.
Highs in the upper 50s.
$$
WYZ279-182200-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
443 AM MDT Fri Apr 18 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow through the
day. Numerous snow showers early in the
morning. Scattered snow showers until late
afternoon, then isolated snow showers early in
the afternoon. Snow accumulation up to 3
inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....27-32.
24 hr trend......11 degrees cooler.
Min humidity........70-76 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. Northeast winds around 25 mph with
gusts to around 35 mph.
Ridge top winds.....Northeast 25 to 30 mph.
Chc of wetting rain.30 percent until 1200, then 5 percent.
Transport winds.....Northeast around 30 mph.
Mixing Height.......1000-3000 ft agl until 1100, then 3000-4600 ft
agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy blowing snow early in the
evening.
Chance of thunder...0 percent.
Min temperature.....12-17.
24 hr trend......4 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......11 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 15 to 20 mph with gusts to
around 25 mph until 2400, then north around 10
mph and gusty.
Ridge top winds.....Northeast 20 to 25 mph until 2400, then around
15 mph until 0400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 20 to 25 mph until 2400, then around
15 mph.
Mixing Height.......1800-3600 ft agl until 2000, then 400-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......9 degrees warmer.
Min humidity........50-56 percent.
24 hr trend......22 percent drier.
20-foot winds.......Northwest winds around 10 mph and gusty.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 2600-4000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 20s. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy. Lows in the upper 20s. Highs in the
upper 40s. Southwest winds around 10 mph.
.MONDAY...Partly cloudy with scattered showers and isolated snow
showers. Lows in the upper 20s. Highs in the mid 50s. West winds
around 15 mph.
.TUESDAY...Partly cloudy. Lows in the lower 30s. Highs in the mid
50s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Isolated showers. Lows in the mid
30s. Highs in the lower 60s.
.THURSDAY...Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Highs in the lower 60s.
$$
WYZ289-182200-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow early in the
morning. Patchy blowing snow early in the
morning. Patchy blowing snow in the late
morning and afternoon. Snow showers in the
morning, then scattered snow showers in the
afternoon. Snow accumulation of 1 to 5 inches.
Chance of snow 90 percent.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......Unchanged.
Min humidity........67-73 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. Northeast winds 20 to 25 mph. Gusts up
to 40 mph until 1500, then 30 mph.
Ridge top winds.....Northeast 25 to 30 mph until 1700, then around
20 mph.
Chc of wetting rain.55 percent until 1200, then 15 percent.
Transport winds.....Northeast 25 to 30 mph until 1700, then around
20 mph.
Mixing Height.......800-2800 ft agl until 1100, then 2800-3800 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy blowing snow early in the
evening. Isolated snow showers early in the
evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....8-13.
24 hr trend......8 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......11 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 15 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast 15 to 20 mph until 2200, then around
10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 15 to 20 mph until 2300, then east
around 10 mph until 0200, then southeast until
0300, then west.
Mixing Height.......1200-2800 ft agl until 2000, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......9 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Not as cold. Mostly clear. Lows in the lower
20s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 40s. Southwest winds around 10 mph.
.MONDAY...Mostly clear with scattered showers and snow showers.
Lows in the mid 20s. Highs in the upper 40s. Southwest winds
around 15 mph.
.TUESDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 50s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Scattered showers. Lows in the lower
30s. Highs in the mid 50s.
.THURSDAY...Partly cloudy. Scattered showers in the afternoon.
Highs in the mid 50s.
$$
WYZ300-182200-
Casper Mountain-
443 AM MDT Fri Apr 18 2025
...WINTER STORM WARNING IN EFFECT UNTIL NOON MDT TODAY...
.TODAY...
Sky/weather.........Cloudy. Patchy blowing snow until late
afternoon. Snow showers in the morning.
Scattered snow showers in the afternoon. Snow
accumulation of 1 to 6 inches. Chance of snow
90 percent.
Chance of thunder...0 percent.
Max temperature.....23-28.
24 hr trend......3 degrees cooler.
Min humidity........75-81 percent.
24 hr trend......5 percent drier.
20-foot winds.......Northeast winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Northeast 20 to 25 mph until 1600, then around
15 mph.
Chc of wetting rain.55 percent until 1200, then 15 percent.
Transport winds.....Northeast 20 to 25 mph until 1600, then around
15 mph.
Mixing Height.......600-2600 ft agl until 1100, then 2600-3200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Min temperature.....10-15.
24 hr trend......5 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast 10 to 15 mph until 2300. South after
0300.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph until 2300. South after
0400.
Mixing Height.......400-2400 ft agl until 2100, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......8 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......13 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows around 17. Winds generally
less than 10 mph.
.SUNDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 40s. Southwest winds around 10 mph.
.MONDAY THROUGH TUESDAY...Partly cloudy with isolated showers and
snow showers. Lows in the upper 20s. Highs in the upper 40s.
Southwest winds 10 to 15 mph.
.WEDNESDAY...Partly cloudy. Scattered showers. Lows in the lower
30s. Highs in the mid 50s.
.THURSDAY...Partly cloudy. Isolated showers in the morning, then
scattered showers in the afternoon. Highs in the lower 50s.
$$