National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FNUS73 KDMX 241344
FWSDMX

Spot Forecast for Olive Ave Ditch...Franklin County Conservation
National Weather Service Des Moines IA
844 AM CDT Wed Apr 24 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...

Minimal fire weather concerns today. Winds will be light starting
out of the east northeast this morning, then switching to more
easterly through the morning and southeasterly by late afternoon.
Relative humidities will also bottom out around 25 to 30 percent.
The morning inversion should erode by mid- day as well, becoming
fully mixed around 11 am to noon.

.REST OF TODAY...

Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 61.
Min humidity........28 percent.
Wind (20 ft)........East winds 5 to 8 mph.
Mixing height.......4400 ft AGL.
Transport winds.....Northeast 7 to 9 mph.
Smoke dispersal.....Poor (12900 knot-ft) early in the morning
                    increasing to fair (26300 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   2   2   2   1   1   1   1   2
Weather cov.....
Weather type....
Tstm cov........
Temp............42  47  51  54  56  58  59  60  60
RH..............67  53  44  38  35  33  30  28  28
20 FT wind dir..E   E   E   E   E   E   E   E   E
20 FT wind spd..8   6   7   6   6   5   5   5   5
20 FT wind gust.12  10  9   9   8   7   7   7   7
Mix hgt (kft)...1.6 1.9 2.4 3.0 3.7 3.9 4.1 4.4 4.1
Transp wind dir.NE  NE  NE  NE  NE  NE  NE  NE  E
Transp wind spd.9   9   8   7   7   7   7   7   7
GFDI............0   0   0   0   0   0   0   0   0
Haines index....4   4   4   4   4   4   4   4   4
SDspl kt-ft/100013  16  17  19  22  23  25  26  24

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (45-55 percent).
Min temperature.....Around 40.
Max humidity........62 percent.
Wind (20 ft)........Southeast winds 6 to 9 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southeast 7 to 15 mph.
Smoke dispersal.....Fair (22100 knot-ft) early in the evening
                    decreasing to poor (3600 knot-ft) late in the
                    night.
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........6      17     36     38     55     54
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............61     55     48     45     44     42
RH..............26     34     46     51     55     62
20 ft wind......SE 6   SE 6   SE 6   SE 7   SE 9   SE 9
20 ft wind gust.7      9      10     14     15     15
Mix hgt (ft)....3800   2500   400    400    400    500
Transport wind..E 7    SE 8   SE 10  SE 12  SE 14  S 15
GFDI............0      0      0      0      0      0
Haines index....4      4      4      4      4      4
SDspl kt-ft/100022     17     4      4      5      6

.THURSDAY...

Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 65.
Min humidity........35 percent.
Wind (20 ft)........Southeast winds 9 to 18 mph increasing to 21 to
                    22 mph in the afternoon.
Mixing height.......4600 ft AGL.
Transport winds.....Southeast 15 to 23 mph increasing to 25 to 26
                    mph late in the afternoon.
Smoke dispersal.....Poor (6800 knot-ft) early in the morning
                    increasing to excellent (106200 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)      6 AM      9 AM      NOON      3 PM
Sky (%).........46        46        48        35
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............42        47        60        65
RH..............67        65        47        37
20 FT wind......SE 9G15   SE 15G20  SE 21G24  SE 22G28
Mix hgt (ft)....500       1500      3400      4400
Transport wind..S 15      SE 20     SE 22     SE 25
GFDI............0         1         1         3
Haines index....4         4         4         3
SDspl kt-ft/10007         26        63        98

$$
Forecaster...Dodson
Requested by...Alex Meyer
Type of request...PRESCRIBED
.TAG 2412259.0/DMX
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL ameyer@co.franklin.ia.us