Text Products for FWS Issued by DMX

Spot Forecast
Issued by NWS Des Moines, IA
Versions: 1 2 3 4 5 6 7 8 9 10 11
000
FNUS73 KDMX 201056
FWSDMX

Spot Forecast for Pohl Prairie Rx...INHF
National Weather Service Des Moines IA
556 AM CDT Sat Apr 20 2024

Forecast is based on ignition time of 0700 CDT on April 20.
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...

Becoming mostly cloudy today with a brisk northwest wind.
Temperatures remain cool for this time a year with minimum
relative humidity values dropping from 35 to 40 percent by mid
afternoon.


.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent) then becoming
                    mostly cloudy (70-80 percent).
Temperature.........30 at ignition...Max 50.
RH..................72 percent at ignition...Min 37 percent.
Wind (20 ft)........Winds northwest at 12 mph at
                    ignition...otherwise Northwest winds 12 to 16
                    mph.
Mixing height.......600 ft AGL at ignition...otherwise 6200 ft AGL.
Transport winds.....Northwest 16 to 23 mph increasing to 22 to 26
                    mph in the late morning and afternoon.
Smoke dispersal.....Poor /8600 knot-ft/ at ignition.
                    Max...excellent /105300 knot-ft/ increasing to
                    excellent (109800 knot-ft) in the afternoon.
GFDI................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth at ignition...max 3.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   5   28  50  47  52  57  60  62  68  74
Weather cov.....
Weather type....
Tstm cov........
Temp............30  32  35  38  40  42  44  46  48  49  50
RH..............72  72  64  57  52  50  49  45  42  40  37
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..12  13  15  15  16  15  15  14  14  14  14
20 FT wind gust.18  18  20  22  22  22  22  22  22  21  21
Mix hgt (kft)...0.6 2.2 3.9 4.6 4.9 5.3 5.5 5.9 6.0 6.1 6.2
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.16  23  26  26  24  24  23  23  23  23  22
GFDI............0   1   1   1   1   1   1   1   1   1   1
Haines index....3   3   3   3   3   3   3   3   3   3   3
SDspl kt-ft/10009   44  90  105 103 112 110 118 121 122 117

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (25-35 percent) then becoming
                    clear (0-10 percent). Areas of frost overnight.
                    Widespread frost overnight.
Temperature.........Min 29.
RH..................Max 85 percent.
Wind (20 ft)........Northwest winds 6 to 13 mph.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 13 to 22 mph decreasing to 10 to 12
                    mph in the late evening and overnight.
Smoke dispersal.....Excellent (88800 knot-ft) decreasing to poor
                    (3400 knot-ft) early in the evening.
GFDI................1.
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 (%).........73     63     42     17     2      5
Weather cov.....                     AREAS  WIDSPD WIDSPD
Weather type....NONE   NONE   NONE   FROST  FROST  FROST
Tstm cov........
Temp............49     46     40     36     33     31
RH..............39     45     59     69     78     85
20 ft wind......NW 13  NW 9   NW 7   W 7    W 6    W 6
20 ft wind gust.20     14     10     10     10     9
Mix hgt (ft)....6100   700    500    400    400    400
Transport wind..NW 22  NW 13  W 10   W 12   NW 10  NW 10
GFDI............1      1      0      0      0      0
Haines index....3      3      3      3      4      4
SDspl kt-ft/1000116    7      4      4      4      3

.SUNDAY...

Sky/weather.........Sunny (0-5 percent). Widespread frost early in
                    the morning.
Temperature.........Max 61.
RH..................Min 24 percent.
Wind (20 ft)........Northwest winds 6 to 12 mph.
Mixing height.......5800 ft AGL.
Transport winds.....Northwest 12 to 18 mph.
Smoke dispersal.....Poor (3800 knot-ft) early in the morning
                    increasing to excellent (93600 knot-ft) in the
                    afternoon.
GFDI................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........1         1         1         0
Weather cov.....WIDSPD
Weather type....FROST     NONE      NONE      NONE
Tstm cov........
Temp............30        38        53        59
RH..............85        64        35        27
20 FT wind......W 6G8     NW 8G12   NW 10G16  W 12G16
Mix hgt (ft)....400       1700      4800      5600
Transport wind..W 12      NW 15     NW 16     W 18
GFDI............0         0         1         1
Haines index....4         4         4         4
SDspl kt-ft/10004         22        69        91

$$
Forecaster...Cogil
Requested by...Derek Miner
Type of request...PRESCRIBED
.TAG 2411479.0/DMX
.DELDT 04/20/24
.FormatterVersion 2.0.0
.EMAIL dminer@inhf.org
National Weather Service Weather Forecast Office
