Text Products for FWS Issued by DMX

Spot Forecast
Issued by NWS Des Moines, IA
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FNUS73 KDMX 231220
FWSDMX

Spot Forecast for Jensen Marsh...Madison County Conservation
National Weather Service Des Moines IA
720 AM CDT Tue Apr 23 2024

Forecast is based on ignition time of 0900 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...

Sunny skies are expected on Wednesday with generally light
northeast winds in the morning becoming more easterly by
afternoon. Fuels will dry somewhat slowly given the lighter winds
but the sunshine should help. Relative humidity values are
expected to drop to around 35 percent by mid afternoon.

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
Temperature.........45 at ignition...Max 64.
RH..................70 percent at ignition...Min 34 percent.
Wind (20 ft)........Winds northeast at 6 mph at
                    ignition...otherwise Northeast winds 6 to 7 mph
                    shifting to the east around 7 mph late in the
                    afternoon.
Mixing height.......1900 ft AGL at ignition...otherwise 4600 ft
                    AGL.
Transport winds.....Northeast 7 to 9 mph.
Smoke dispersal.....Fair /15000 knot-ft/ at ignition. Max...fair
                    /27600 knot-ft/.
GFDI................0.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........19  14  15  18  20  21  21  22  25
Weather cov.....
Weather type....
Tstm cov........
Temp............45  51  54  56  59  61  62  64  63
RH..............70  56  50  45  40  38  36  34  34
20 FT wind dir..NE  NE  NE  NE  NE  E   E   E   E
20 FT wind spd..6   7   7   7   7   7   7   7   7
20 FT wind gust.9   9   10  10  10  10  9   9   9
Mix hgt (kft)...1.9 2.1 2.7 3.3 3.9 4.1 4.4 4.6 3.7
Transp wind dir.NE  NE  N   N   N   NE  NE  NE  E
Transp wind spd.9   8   8   8   8   8   7   7   7
GFDI............0   0   0   0   0   0   0   0   0
Haines index....5   5   5   5   5   5   5   5   5
SDspl kt-ft/100015  15  19  23  27  27  27  28  22

.WEDNESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
Temperature.........Min 45. RH..................Max 71 percent.
Wind (20 ft)........Southeast winds 7 to 9 mph. Mixing
height.......400 ft AGL. Transport winds.....Southeast 7 to 14
mph. Smoke dispersal.....Fair (18000 knot-ft) early in the evening
decreasing to poor (4400 knot-ft) late in the night.
GFDI................0. Haines Index........4 to 5 or low to
moderate potential for large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........29     44     65     56     51     50
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............63     59     51     50     48     46
RH..............34     37     52     56     63     71
20 ft wind......SE 7   SE 7   SE 7   SE 8   SE 8   SE 9
20 ft wind gust.9      9      10     12     13     14
Mix hgt (ft)....2800   1400   400    400    400    400
Transport wind..E 7    SE 9   SE 13  SE 13  SE 13  SE 14
GFDI............0      0      0      0      0      0
Haines index....5      5      5      5      4      4
SDspl kt-ft/100018     12     4      5      5      5

$$
Forecaster...Cogil
Requested by...Tanner Donovan
Type of request...PRESCRIBED
.TAG 2411933.0/DMX
.DELDT 04/23/24
.FormatterVersion 2.0.0
.EMAIL tdonovan@madisoncounty.iowa.gov
National Weather Service Weather Forecast Office
