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FNUS73 KDMX 240909
FWSDMX

Spot Forecast for Dekalb Bethards...Iowa DNR Grand River Wildlife Unit
National Weather Service Des Moines IA
409 AM CDT Wed Apr 24 2024

Forecast is based on ignition time of 0800 CDT on April 24.
If conditions become unrepresentative...contact the National Weather
Service.

An initial observation at ignition and a mid burn observation are required.

Please relay them to the National Weather Service for each prescribed burn.

.DISCUSSION...

Dry conditions are expected today as high pressure continues
to push into the region, with mostly sunny skies. Winds will
overall be light, starting out from the north/northeast and
gradually shifting southeasterly into the evening. Minimum RHs are
expected to start out in the 60s before falling into the upper 30s
this afternoon. The light winds, as well as increasing greenup
however will limit the potential for fire weather concerns today.

.REST OF TODAY...

Sky/weather.........Sunny (20-30 percent).
Max temperature.....Around 66.
Min humidity........35 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph shifting to the east
                    around 5 mph late in the afternoon.
Mixing height.......4500 ft AGL.
Transport winds.....Northeast 7 to 12 mph.
Smoke dispersal.....Poor (11700 knot-ft) early in the morning
                    increasing to fair (26900 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  30  34  34  21  17  16  14  12  19
Weather cov.....
Weather type....
Tstm cov........
Temp............44  48  54  59  61  62  63  64  65  65
RH..............82  74  61  49  44  43  39  38  35  35
20 FT wind dir..NE  NE  NE  NE  NE  NE  NE  E   E   E
20 FT wind spd..7   7   7   7   6   6   6   6   5   5
20 FT wind gust.13  10  10  9   9   9   8   7   7   8
Mix hgt (kft)...1.2 1.6 2.1 2.7 3.2 3.7 4.0 4.2 4.5 3.7
Transp wind dir.N   NE  NE  NE  NE  N   NE  NE  NE  E
Transp wind spd.12  12  10  8   8   8   8   7   7   7
GFDI............0   0   0   0   0   0   0   0   0   0
Haines index....4   4   4   4   4   3   3   3   3   3
SDspl kt-ft/100012  16  19  19  21  26  27  27  27  21

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (55-65 percent).
Min temperature.....Around 46.
Max humidity........79 percent.
Wind (20 ft)........Southeast winds 6 to 9 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southeast 7 to 14 mph.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........23     21     33     56     59     59
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............65     60     53     51     49     47
RH..............35     46     59     63     68     76
20 ft wind......SE 6   SE 6   E 7    SE 8   SE 8   SE 9
20 ft wind gust.8      9      12     14     15     15
Mix hgt (ft)....2900   1500   400    400    400    400
Transport wind..E 7    E 8    SE 12  SE 13  SE 13  SE 13
Haines index....3      4      4      4      4      4

.THURSDAY...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of rain
                    showers in the afternoon.
Max temperature.....Around 65.
Min humidity........48 percent.
Wind (20 ft)........Southeast winds 9 to 17 mph.
Mixing height.......3800 ft AGL.
Transport winds.....Southeast 15 to 24 mph increasing to 25 to 26
                    mph late in the afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........60        69        79        81
Weather cov.....                              CHANCE
Weather type....NONE      NONE      NONE      RNSHWR
Tstm cov........
Temp............46        51        62        65
RH..............79        74        54        48
20 FT wind......SE 9G15   SE 13G18  SE 15G23  SE 17G25
Mix hgt (ft)....500       1300      3100      3500
Transport wind..SE 15     SE 17     SE 22     SE 25
Haines index....4         4         4         4

$$
Forecaster...Bury
Requested by...Josh Rusk
Type of request...PRESCRIBED
.TAG 2411963.0/DMX
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL josh.rusk@dnr.iowa.gov