649
FNUS73 KDMX 091448
FWSDMX

Spot Forecast for Calkins Brush Piles...Hardin County Conservation
National Weather Service Des Moines IA
848 AM CST Thu Jan 9 2025

Forecast is based on ignition time of 0900 CST on January 09.
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...

South winds will increase to 10 to 15 mph today, then turn to
northwest in the late afternoon or evening as a front moves
through. Light snow or flurries are also possible late in the day
across northern and western Iowa, but with little to no
accumulation.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of
                    flurries late in the afternoon.
Temperature.........13 at ignition...Max 28.
RH..................84 percent at ignition...Min 68 percent.
Wind (20 ft)........Winds south at 8 mph at ignition...otherwise
                    South winds 8 to 12 mph shifting to the west
                    around 9 mph late in the afternoon.
Mixing height.......600 ft AGL at ignition...otherwise 1800 ft AGL.
Transport winds.....Southwest 15 to 18 mph shifting to the west 12
                    to 15 mph late in the afternoon.
GFDI................0.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (CST)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........57  63  69  75  76  76  77  82  90
Weather cov.....                                CHC
Weather type....                                SW
Tstm cov........
Temp............13  17  22  24  27  28  28  26  23
RH..............84  77  71  74  68  71  75  81  92
20 FT wind dir..S   S   S   S   SW  SW  SW  W   W
20 FT wind spd..8   9   10  12  13  12  12  10  9
20 FT wind gust.12  14  14  16  15  16  16  15  13
Mix hgt (kft)...0.6 1.0 1.1 1.2 1.4 1.6 1.8 1.3 0.9
Transp wind dir.S   S   S   SW  SW  SW  W   W   W
Transp wind spd.16  18  17  16  15  16  15  13  12
GFDI............0   0   0   0   0   0   0   0   0
Haines index....5   5   5   5   5   5   5   5   5

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    snow in the evening, then chance of flurries
                    late in the evening.
Temperature.........Min 18.
RH..................Max 100 percent.
Wind (20 ft)........West winds 10 to 12 mph shifting to the
                    northwest late in the evening.
Mixing height.......600 ft AGL.
Transport winds.....Northwest 10 to 16 mph increasing to 14 to 17
                    mph in the late evening and overnight.
GFDI................0.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........88  91  92  90  89  87  83  79  78  71  63  62
Weather cov.....SCH SCH SCH SCH SCH CHC CHC
Weather type....SN  SN  SN  SN  SN  SW  SW
Tstm cov........
Temp............22  21  23  24  23  24  22  22  21  20  19  18
RH..............96  100 96  92  88  88  96  92  96  96  96  96
20 FT wind dir..W   W   NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..10  10  10  12  12  10  12  12  12  10  10  10
20 FT wind gust.15  15  15  16  16  15  16  16  16  15  15  15
Mix hgt (kft)...0.6 0.7 0.8 0.8 0.8 0.9 0.9 0.9 0.9 0.9 0.8 0.8
Transp wind dir.W   NW  NW  N   NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.10  14  16  15  15  15  17  16  15  15  15  14
GFDI............0   0   0   0   0   0   0   0   0   0   0   0
Haines index....2   2   2   2   2   2   2   2   2   2   2   2

$$
Forecaster...Lee
Requested by...Nicholas Stavroplus
Type of request...PRESCRIBED
.TAG 2500338.0/DMX
.DELDT 01/09/25
.FormatterVersion 2.0.0
.EMAIL nstavroplus@hardincountyia.gov