Spot Forecast
Issued by NWS Des Moines, IA

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FNUS73 KDMX 281531
FWSDMX

Spot Forecast for Snyder Rx...INHF
National Weather Service Des Moines IA
1031 AM CDT Thu Mar 28 2024

Forecast is based on ignition time of 1100 CDT on March 28.
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...

Quiet conditions expected today with light winds. Poor dispersion is
expected early this morning with increasing winds in the afternoon hours.
No other fire concerns are expected today. Showers will return to the region
later in the period.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 55.
Min humidity........49 percent.
Wind (20 ft)........East winds 5 to 6 mph.
Mixing height.......3500 ft AGL.
Transport winds.....South 8 to 9 mph.
Smoke dispersal.....Poor (12500 knot-ft) early in the morning
                    increasing to fair (28000 knot-ft) in the
                    afternoon.
GFDI................2.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........27  42  43  43  41  35  36
Weather cov.....
Weather type....
Tstm cov........
Temp............42  44  47  49  51  53  55
RH..............57  55  51  52  50  50  49
20 FT wind dir..E   E   E   E   SE  SE  E
20 FT wind spd..5   5   5   5   6   6   5
20 FT wind gust.                    8   8
Mix hgt (kft)...1.8 2.2 2.5 2.7 3.1 3.4 3.5
Transp wind dir.SE  S   S   S   S   S   S
Transp wind spd.8   8   8   8   9   9   9
GFDI............1   2   2   2   2   2   2
Haines index....3   3   4   4   4   4   4
SDspl kt-ft/100013  15  17  19  25  27  28

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (60-70 percent).
Min temperature.....Around 37.
Max humidity........83 percent.
Wind (20 ft)........East winds 6 to 8 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southeast around 8 mph shifting to the east 10
                    to 15 mph.
Smoke dispersal.....Fair (18900 knot-ft) early in the evening
                    decreasing to poor (4200 knot-ft) late in the
                    night.
GFDI................2.
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 (%).........30     31     22     25     47     65
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............54     49     44     40     38     38
RH..............52     63     74     78     82     78
20 ft wind......NE 6   NE 7   E 8    E 8    E 7    E 7
20 ft wind gust.8      10     14     14     13     14
Mix hgt (ft)....2700   400    400    500    500    500
Transport wind..SE 8   E 12   E 15   E 13   E 13   E 12
GFDI............2      2      2      2      2      2
Haines index....4      4      4      4      3      3
SDspl kt-ft/100019     4      6      5      5      5

.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    rain showers in the afternoon.
Max temperature.....Around 64.
Min humidity........57 percent.
Wind (20 ft)........Southeast winds 8 to 13 mph increasing to 13 to
                    14 mph in the afternoon.
Mixing height.......3700 ft AGL.
Transport winds.....Southeast 12 to 20 mph shifting to the south 14
                    to 20 mph in the afternoon.
Smoke dispersal.....Poor (5200 knot-ft) early in the morning
                    increasing to excellent (63700 knot-ft) in the
                    afternoon.
GFDI................6.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........67        77        83        86
Weather cov.....                              S CHC
Weather type....NONE      NONE      NONE      RNSHWR
Tstm cov........
Temp............38        44        57        63
RH..............83        87        64        58
20 FT wind......E 8G14    SE 12G17  SE 14G21  S 14G22
Mix hgt (ft)....500       1000      2900      3400
Transport wind..E 12      SE 16     S 20      S 18
GFDI............2         3         7         9
Haines index....3         3         3         3
SDspl kt-ft/10005         14        50        53

$$
Forecaster...Vachalek
Requested by...Derek Miner
Type of request...PRESCRIBED
.TAG 2408766.0/DMX
.DELDT 03/28/24
.FormatterVersion 2.0.0
.EMAIL dminer@inhf.org


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