Suppression Forecast
Issued by NWS Omaha/Valley, NE
Issued by NWS Omaha/Valley, NE
630
FNUS73 KOAX 031412
FWSOAX
Spot Forecast for Lake Shawtee WMA...Iowa DNR
National Weather Service Omaha/Valley NE
912 AM CDT Thu Apr 3 2025
Forecast is based on ignition time of 0900 CDT on April 03.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
Rangeland fire danger is in the low to moderate category in your
area today with light winds and modest moisture. Light northwesterly
winds become northerly by lunch and easterly by 5pm. Afternoon
winds will be light, with speeds peaking at 5-15 mph this
afternoon. Afternoon mixing heights will peak in the 3500-4000 ft
range, bringing fair to good smoke dispersal. Light rain chances
(20-40%) will moving in overnight, with minimal accumulations.
Rangeland fire danger remains low tomorrow. Rain chances will
continue through the day, peaking in the early afternoon (40-70%
chance). Rainfall amounts will likely remain light, with most
areas receiving less than 0.25". Minimum RH values will be in the
50-75% range. Winds will begin out of the southeast before
shifting to northerly later in the evening. Winds will remain
light, with afternoon gusts reaching 12-17 mph. Afternoon mixing
heights will peak at 1500-2500 ft, bringing fair smoke dispersal.
Strongest Possible Wind Speeds on Day of Burn: 15 mph
Lowest Possible Relative Humidity on Day of Burn: 41%
.REST OF TODAY...
Sky/weather.........Partly sunny (55-65 percent).
Temperature.........38 at ignition...Max 57.
RH..................85 percent at ignition...Min 45 percent.
Eye level winds.....Light winds becoming northeast around 4 mph
early in the afternoon, then shifting to the
east late in the afternoon.
Surface winds (mph).Light winds becoming northeast around 6 mph
early in the afternoon, then shifting to the
east late in the afternoon.
Wind (20 ft)........Winds west at 3 mph at ignition...otherwise
Light winds becoming north around 5 mph early
in the afternoon, then shifting to the east
late in the afternoon.
Mixing height.......1500 ft AGL at ignition...otherwise 3600 ft
AGL.
Transport winds.....North 6 to 12 mph shifting to the northeast
around 5 mph early in the afternoon, then
shifting to the southeast late in the
afternoon.
Smoke dispersal.....Fair /16700 knot-ft/ at ignition. Max...fair
/20500 knot-ft/.
GFDI................2.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........49 40 55 61 82 75 79 68 58
Weather cov.....
Weather type....
Tstm cov........
Temp............38 43 46 48 51 53 55 55 56
RH..............85 70 63 60 52 50 47 47 47
20 FT wind dir..W NW N N N N NE E E
20 FT wind spd..3 4 4 5 5 5 5 5 5
20 FT wind gust.6 6 7 7 8 8 8 8 8
Eye lvl wnd dir.W NW N N N N NE E E
Eye lvl wnd spd.2 3 3 4 4 4 4 4 4
Eye lvl wnd gst.5 5 5 5 6 6 6 6 6
Surface wnd dir.W NW N N N N NE E E
Surface wnd spd.4 5 5 6 6 6 6 6 6
Surface wnd gst.8 8 9 9 10 10 10 10 10
Mix hgt (kft)...1.5 2.0 2.1 2.6 2.8 3.2 3.3 3.6 3.5
Transp wind dir.NW N N N N NE E SE S
Transp wind spd.10 12 12 10 6 5 5 5 5
GFDI............1 1 1 1 2 2 2 2 2
SDspl kt-ft/100017 21 20 17 14 14 14 14 13
.TONIGHT...
Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
rain showers overnight.
Temperature.........Min 41.
RH..................Max 89 percent.
Eye level winds.....East winds around 4 mph.
Surface winds (mph).East winds 6 to 8 mph.
Wind (20 ft)........East winds 5 to 7 mph.
Mixing height.......300 ft AGL.
Transport winds.....East 6 to 12 mph.
Smoke dispersal.....Poor (2700 knot-ft).
GFDI................2.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........72 86 80 93 80 67 60 74 69 74 72 66
Weather cov..... SCH
Weather type.... RW
Tstm cov........
Temp............57 55 52 49 48 47 46 45 44 44 43 43
RH..............45 53 61 66 68 74 73 76 82 82 82 82
20 FT wind dir..E E E E E E E E E E E E
20 FT wind spd..6 6 5 5 5 5 5 5 6 6 6 6
20 FT wind gust.8 10 8 8 8 8 10 10 10 10 10 11
Eye lvl wnd dir.E E E E E E E E E E E E
Eye lvl wnd spd.4 4 4 4 4 4 4 4 4 4 4 4
Eye lvl wnd gst.6 7 6 6 6 6 7 7 7 7 8 8
Surface wnd dir.E E E E E E E E E E E E
Surface wnd spd.8 8 6 6 6 6 6 6 8 8 8 8
Surface wnd gst.10 12 10 10 10 10 12 12 12 12 13 14
Mix hgt (kft)...3.4 1.6 0.4 0.4 0.3 0.3 0.4 0.4 0.5 0.6 0.6 0.5
Transp wind dir.E E E E E E E E E E E E
Transp wind spd.6 6 7 8 9 10 12 12 12 12 12 12
GFDI............2 2 1 1 1 1 1 1 1 1 1 1
SDspl kt-ft/100010 8 6 4 3 3 3 4 5 5 6 5
.FRIDAY...
Sky/weather.........Mostly cloudy (80-90 percent). Chance of rain
showers in the morning. Rain showers likely in
the afternoon.
Temperature.........Max 54.
RH..................Min 67 percent.
Eye level winds.....Northeast winds up to 7 mph.
Surface winds (mph).Northeast winds 8 to 11 mph.
Wind (20 ft)........East winds 7 to 10 mph.
Mixing height.......2600 ft AGL.
Transport winds.....East 12 to 16 mph.
Smoke dispersal.....Poor (4400 knot-ft) early in the morning
increasing to good (32800 knot-ft) in the
afternoon.
GFDI................2.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........79 90 90 94 88 93 93 93 91 89 87 87
Weather cov..... CHC CHC CHC CHC CHC CHC LKY LKY LKY LKY LKY
Weather type.... RW RW RW RW RW RW RW RW RW RW RW
Tstm cov........
Temp............43 43 42 43 46 49 50 51 52 53 53 53
RH..............82 82 89 86 83 77 73 71 70 69 69 67
20 FT wind dir..E E E E E E E E E E E NE
20 FT wind spd..6 7 8 8 8 8 9 9 9 9 9 9
20 FT wind gust.11 12 12 13 14 14 14 14 14 14 14 14
Eye lvl wnd dir.E E E E E E E E E E E NE
Eye lvl wnd spd.4 5 6 6 6 6 7 7 7 7 7 7
Eye lvl wnd gst.8 9 9 10 10 11 11 11 11 10 10 10
Surface wnd dir.E E E E E E E E E E E NE
Surface wnd spd.8 9 10 10 10 10 11 11 11 11 11 11
Surface wnd gst.14 15 15 16 17 18 18 18 18 17 17 17
Mix hgt (kft)...0.5 0.5 0.6 0.9 1.3 1.7 2.1 2.5 2.5 2.6 2.6 2.4
Transp wind dir.E E E E E E E E E E E E
Transp wind spd.12 12 12 13 15 16 15 15 13 12 12 12
GFDI............1 2 2 2 2 2 3 3 3 3 3 3
SDspl kt-ft/10004 5 8 12 17 23 29 33 33 30 26 23
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Mostly cloudy. Chance of showers. Lows in the mid 30s. Highs in
the upper 40s. North winds around 14 mph.
.SUNDAY...
Mostly clear. Lows in the upper 20s. Highs in the upper 50s.
North winds around 16 mph.
.MONDAY...
Mostly clear. Lows in the upper 20s. Highs in the lower 50s.
Northwest winds around 8 mph.
$$
Forecaster...Nicolaisen
Requested by...Matt Dollison
Type of request...PRESCRIBED
.TAG 2508777.0/OAX
.DELDT 04/03/25
.FormatterVersion 2.0.0
.EMAIL matt.dollison@dnr.iowa.gov