698
FNUS73 KOAX 041018
FWSOAX

Spot Forecast for Loess Hills Cooperative Burn Week 2025...Iowa DNR
National Weather Service Omaha/Valley NE
518 AM CDT Fri Apr 4 2025

Forecast is based on ignition time of 0800 CDT on April 04.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Fire weather concerns remain minimal for today, as rain showers
will be on the increase this morning into the afternoon hours. A
16% chance of showers exists at ignition time, with showers
becoming likely (greater than 50% chance) by the noon hour today.
Showers exit the area after midnight. Winds will be from the
southeast at 10 to 15 mph through about 2 pm before they switch
to the northeast at 5 to 10 mph by 7 pm. Wind speeds become north
northwesterly after midnight as a front will move through the
area. Winds could gust up to 30 mph after midnight tonight. GFDI
remains at low for today. Mixing heights will be at around 2000 ft
during the daytime hours resulting in poor to fair smoke dispersal.

Saturday will see high Grassland Fire Danger with breezy northerly
winds around 15-20 mph with gusts to around 31 mph. Minimum RH
values drop to around 32%. Mixing heights will reach 5000 feet and
result in fair to excellent smoke dispersal.

Strongest Possible Wind Speeds on Day of Burn: 10 to 15 mph with
gusts up to 20 mph this morning. Winds could gust up to 30 mph
tonight after midnight.

Lowest Possible Relative Humidity on Day of Burn: 69%

.REST OF TODAY...

Sky/weather.........Cloudy (90-100 percent). Chance of rain showers
                    early in the morning, then rain showers likely
                    in the afternoon.
Max temperature.....Around 51.
Min humidity........69 percent.
Eye level winds.....East winds up to 7 mph.
Surface winds (mph).East winds 8 to 11 mph.
Wind (20 ft)........East winds 7 to 10 mph.
Mixing height.......2200 ft AGL.
Transport winds.....East around 12 mph.
Smoke dispersal.....Poor (6900 knot-ft) early in the morning
                    increasing to fair (21900 knot-ft) in the
                    afternoon.
GFDI................2.

.TONIGHT...

Sky/weather.........Cloudy (85-95 percent). Chance of rain showers
                    through the night.
Min temperature.....Around 33.
Max humidity........86 percent.
Eye level winds.....North winds 5 to 11 mph. Gusts up to 20 mph
                    increasing to 30 mph overnight.
Surface winds (mph).North winds 9 to 19 mph. Gusts up to 20 mph
                    increasing to 30 mph overnight.
Wind (20 ft)........North winds 8 to 16 mph. Gusts up to 20 mph
                    increasing to 30 mph overnight.
Mixing height.......400 ft AGL.
Transport winds.....North around 17 mph.
Smoke dispersal.....Good (44700 knot-ft) early in the evening
                    decreasing to poor (2500 knot-ft) late in the
                    night.
GFDI................4.

.SATURDAY...

Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 49.
Min humidity........32 percent.
Eye level winds.....North winds 11 to 13 mph with gusts to around
                    19 mph.
Surface winds (mph).North winds 19 to 21 mph with gusts to around
                    31 mph.
Wind (20 ft)........North winds 16 to 20 mph with gusts to around
                    25 mph.
Mixing height.......5100 ft AGL.
Transport winds.....North around 25 mph.
Smoke dispersal.....Fair (21000 knot-ft) early in the morning
                    increasing to excellent (96400 knot-ft) in the
                    afternoon.
GFDI................10.

$$
Forecaster...Castillo
Requested by...Kody Wohlers
Type of request...PRESCRIBED
.TAG 2508834.0/OAX
.DELDT 04/04/25
.FormatterVersion 2.0.0
.EMAIL kwohlers@inhf.org