Spot Forecast Issued by NWS Des Moines, IA
000
FNUS73 KDMX 211036
FWSDMX
Spot Forecast for Curt Cable...Dallas County Conservation Boaed
National Weather Service Des Moines IA
536 AM CDT Thu Mar 21 2024
Forecast is based on ignition time of 0600 CDT on March 21.
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...
Although relative humidities will be low at times, fairly seasonal
fire weather conditions can be expected across central Iowa today.
Winds will generally remain easterly with only a slight increase
into the afternoon.
.TODAY...
Sky/weather.........Mostly sunny (35-45 percent) then becoming
mostly cloudy (65-75 percent).
Max temperature.....Around 49.
Min humidity........27 percent.
Wind (20 ft)........East winds 7 to 12 mph.
Mixing height.......3400 ft AGL.
Transport winds.....East 10 to 16 mph.
Smoke dispersal.....Poor (4200 knot-ft) early in the morning
increasing to good (48100 knot-ft) in the
afternoon.
GFDI................5.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........38 28 23 27 34 44 41 42 47 55 61 72
Weather cov.....
Weather type....
Tstm cov........
Temp............29 28 29 31 34 37 40 42 45 46 47 48
RH..............42 50 48 45 39 35 31 29 27 27 27 29
20 FT wind dir..E E E E E E E E E E E E
20 FT wind spd..7 7 8 10 12 12 10 12 12 12 12 12
20 FT wind gust.15 15 16 17 17 16 14 14 14 14 14 15
Mix hgt (kft)...0.5 0.5 0.7 1.8 2.2 2.6 3.1 3.2 3.4 3.4 3.4 3.4
Transp wind dir.E E E E E E E E E E E SE
Transp wind spd.10 10 12 16 16 16 16 14 15 15 15 16
GFDI............3 3 3 4 5 6 5 6 6 7 7 7
Haines index....4 4 4 4 4 4 4 3 3 3 3 3
SDspl kt-ft/10004 4 7 25 31 36 43 39 44 44 44 48
.TONIGHT...
Sky/weather.........Mostly cloudy (65-75 percent). Rain showers
likely and chance of thunderstorms overnight.
Min temperature.....Around 35.
Max humidity........62 percent.
Wind (20 ft)........Southeast winds 7 to 12 mph. Gusts up to 23 mph
early in the evening. Gusty and erratic winds
expected near thunderstorms after 3 am.
Mixing height.......700 ft AGL.
Transport winds.....Southeast 13 to 20 mph.
Smoke dispersal.....Good (50400 knot-ft) early in the evening
decreasing to poor (8000 knot-ft) late in the
night.
GFDI................5.
Haines Index........3 or very low potential for large plume
dominated fire growth.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........78 76 76 70 64 70
Weather cov..... CHANCE
Weather type....NONE NONE NONE NONE NONE RNSHWR
Tstm cov........ CHANCE
Temp............47 44 41 41 40 39
RH..............30 38 46 48 52 59
20 ft wind......E 12 E 10 E 9 SE 10 SE 10 SE 8
20 ft wind gust.16 20 22 21 18 14
Mix hgt (ft)....3400 1000 800 900 700 700
Transport wind..SE 17 SE 17 SE 20 SE 18 S 15 S 13
GFDI............7 7 6 6 5 3
Haines index....3 3 3 3 3 3
SDspl kt-ft/100050 14 14 15 9 8
.FRIDAY...
Sky/weather.........Mostly cloudy (75-85 percent). Rain showers
likely and chance of thunderstorms in the
morning.
Max temperature.....Around 45.
Min humidity........60 percent.
Wind (20 ft)........North winds 8 to 16 mph increasing to 18 to 20
mph in the afternoon. Gusty and erratic winds
expected near thunderstorms early in the
morning.
Mixing height.......3600 ft AGL.
Transport winds.....West around 14 mph shifting to the north 10 to
17 mph in the morning, then increasing to 23 to
25 mph late in the morning.
Smoke dispersal.....Poor (9900 knot-ft) early in the morning
increasing to excellent (79100 knot-ft) in the
afternoon.
GFDI................5.
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
TIME (CDT) 6 AM 9 AM NOON 3 PM
Sky (%).........90 86 76 68
Weather cov.....LIKELY CHANCE
Weather type....RNSHWR RNSHWR NONE NONE
Tstm cov........CHANCE CHANCE
Temp............38 37 42 43
RH..............73 92 76 62
20 FT wind......N 8G15 N 9G13 N 16G20 N 20G23
Mix hgt (ft)....1000 1100 2700 3400
Transport wind..W 14 N 13 N 25 N 25
GFDI............2 2 5 8
Haines index....3 3 3 2
SDspl kt-ft/100012 12 59 77
$$
Forecaster...Small
Requested by...Curt Cable
Type of request...PRESCRIBED
.TAG 2408016.0/DMX
.DELDT 03/21/24
.FormatterVersion 2.0.0
.EMAIL curt.cable@dallascountyiowa.gov