Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
337 AM MDT Tue May 13 2025
COZ001>014-017>023-UTZ022>025-027>029-140945-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
337 AM MDT Tue May 13 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Southerly to southwesterly winds are expected to gust 40-50 mph
across the area today, with Wind Advisories in effect for most valley
locations. Where fuels are critical, these winds combined with dry
air will lead to localized critical fire weather conditions.
Temperatures remain 10-15 degrees above normal.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
A cold front will bring mountain rain and snow showers as well as
much cooler temperatures for Wednesday and Thursday. Snow
accumulations will be less than 6 inches and generally confined to
elevations above 10K feet. Temperatures will warm for Friday and
Saturday ahead of the next system. Another round of gusty winds could
be possible on Sunday, followed by a return to cooler and unsettled
conditions to kick off next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today or tonight, however
spotters are encouraged to report excessive wind or any observed
wind related damage to the National Weather Service in Grand
Junction
$$
Hazardous Weather Outlook
National Weather Service Pueblo CO
1107 AM MDT Tue May 13 2025
COZ058>089-093>099-141715-
Western Mosquito Range/East Lake County Above 11000 Feet-
Leadville Vicinity/Lake County Below 11000 Feet-
Eastern Sawatch Mountains Above 11000 Feet-
Western Chaffee County Between 9000 and 11000 Feet-
Central Chaffee County Below 9000 Feet-
Western Mosquito Range/East Chaffee County Above 9000 Feet-
Saguache County West of Continental Divide Below 10000 Feet-
Saguache County East of Continental Divide Below 10000 Feet-
La Garita Mountains Above 10000 Feet-
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-Eastern San Juan Mountains Above 10000 Feet-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
Northwestern Fremont County Above 8500 Feet-
Western/Central Fremont County Below 8500 Feet-
Wet Mountain Valley Below 8500 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
Crowley County-La Junta Vicinity/Otero County-
Eastern Las Animas County-Western Kiowa County-
Eastern Kiowa County-Las Animas Vicinity/Bent County-
Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County-
1107 AM MDT Tue May 13 2025
This hazardous weather outlook is for portions of central...east
central...south central and southeast Colorado.
.DAY ONE...This Afternoon and Tonight
Southwest flow aloft will continue to increase across the region,
leading to gusty southwest winds of 20 to 40 mph across the area
today. The strongest winds will likely be across the southern
mountains and the San Luis Valley into the southern I-25 Corridor.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Meteorological critical fire weather conditions are expected over
portions of the area each afternoon through Saturday, with Wednesday
showing the most widespread concern. However, fuels at this time
appear too green to warrant any highlights, based on recent heavy
rainfall.
Afternoon and evening showers, with a few thunderstorms, will be
possible each afternoon Wednesday through Saturday. Best chances
will be over the Central Mountains, with lightning, small hail, and
gusty outflow winds as the main impact concerns.
An incoming low pressure system is expected to bring wetter and more
unsettled weather to the area, starting late Sunday and moving into
next week.
.SPOTTER INFORMATION STATEMENT...
Weather spotters will not be needed today or tonight.
$$
EHR/GARBEROGLIO
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1011 AM MDT Tue May 13 2025
COZ030>051-141615-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1011 AM MDT Tue May 13 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
High temperatures this afternoon will be near records for the
date. An isolated thunderstorm is possible in the northeast corner
of Colorado in the late afternoon or evening. If this happens, the
main threats will be wind gusts to 50 mph, brief heavy rain, and
small hail.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
A front will bring cooler temperatures and winds gusting up to 35
mph across the area on Wednesday. Scattered showers and a few
thunderstorms are expected, mainly north of Interstate 70, with
light snow accumulations possible in the northern mountains. Wind
gusts up to 50 mph are possible with the thunderstorms.
For Thursday through Saturday, there will be a slight chance of
showers and thunderstorms, mainly in the afternoons over the
mountains. An increase in thunderstorm activity is expected for
Sunday and Monday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
Gimmestad
Hazardous Weather Outlook
National Weather Service Cheyenne WY
433 AM MDT Tue May 13 2025
NEZ003-019>021-054-055-096-WYZ103>119-141045-
Box Butte County-Scotts Bluff County-Banner County-Morrill County-
Kimball County-Cheyenne County-Southern Sioux County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
433 AM MDT Tue May 13 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...south central Wyoming and southeast Wyoming.
.DAY ONE...TODAY AND TONIGHT
Elevated fire weather concerns today with much warmer than average
temperatures. A few weak showers or a stray thunderstorm may
produce brief wind gusts up to 50 mph late this afternoon and this
evening.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
The next storm system will bring cooler weather and increased
chances for PM shower and thunderstorm Wednesday afternoon.
Strong westerly winds will return to the area Wednesday into
Thursday.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
251 AM MDT Tue May 13 2025
WYZ001>020-022>030-141300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
251 AM MDT Tue May 13 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 6 PM
MDT WEDNESDAY FOR THE ABSAROKA MOUNTAINS...
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 11 PM MDT
WEDNESDAY FOR THE BIGHORN MOUNTAINS...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Fire weather conditions will be elevated east of the Continental
Divide. RH will drop into the low teens for southeastern portions of
the area this afternoon and wind will increase to 20-30 mph, with
gusts of 30-40 mph. A strong cold front will push through central
Wyoming this afternoon into tonight, with a gusty northerly wind
behind it.
Rain and mountain snow begins from the west this afternoon spreading
east of the Divide tonight. Rainfall amounts over 1 inch are possible
in the Cody foothills and eastern slopes of the Absaroka Mountains
below 7500 ft.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday through Thursday...A multi-day Spring storm system will
continue to impact western and central Wyoming. Substantial mountain
snow will fall at elevations above 8000 ft, mainly across the
Absarokas and Bighorns. Rainfall will be impactful as well for
elevations below 8000 ft. The best chance (10-20%) for minor
flooding would along the eastern slopes of the Absaroka Mountains
into northwestern Bighorn Basin.
This Weekend...Another strong Spring weather system appears likely
(70%) to be widespread precipitation chances and cool conditions to
western and central Wyoming.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
