Spot Forecast
Issued by NWS Omaha/Valley, NE
Issued by NWS Omaha/Valley, NE
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FNUS73 KOAX 071333
FWSOAX
Spot Forecast for Green Hill WMA...Iowa DNR
National Weather Service Omaha/Valley NE
833 AM CDT Tue May 7 2024
Forecast is based on ignition time of 1100 CDT on May 07.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
Westerly winds will increase in speed into the 15 to 20 mph range
with gusts up to 30 mph during the afternoon hours. These winds
will allow drier air to advect into areas west of US77, causing
relative humidities to fall to 25-30%. Fuels will be moist from
Tuesday rainfall.
Strongest Possible Wind Speeds on Day of Burn: 30 mph
Lowest Possible Relative Humidity on Day of Burn: 30%
.REST OF TODAY...
Sky/weather.........Sunny (15-25 percent).
Temperature.........63 at ignition...Max 72.
RH..................58 percent at ignition...Min 35 percent.
Eye level winds.....Southwest winds 9 to 13 mph with gusts to
around 18 mph.
Surface winds (mph).Southwest winds 15 to 21 mph with gusts to
around 30 mph.
Wind (20 ft)........Winds southwest at 12 mph at
ignition...otherwise Southwest winds 13 to 18
mph with gusts to around 24 mph.
Mixing height.......2900 ft AGL at ignition...otherwise 7300 ft
AGL.
Transport winds.....Southwest 21 to 30 mph.
Smoke dispersal.....Good /57400 knot-ft/ at ignition.
Max...excellent /131300 knot-ft/ increasing to
excellent (136100 knot-ft) late in the
afternoon.
GFDI................0.
Haines Index........5 or moderate potential for large plume
dominated fire growth at ignition...max 6.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........9 4 2 2 15 38 39
Weather cov.....
Weather type....
Tstm cov........
Temp............63 66 67 69 70 71 70
RH..............58 48 43 40 38 35 38
20 FT wind dir..SW SW SW SW SW SW SW
20 FT wind spd..12 14 15 15 16 17 15
20 FT wind gust.17 20 22 22 23 24 22
Eye lvl wnd dir.SW SW SW SW SW SW SW
Eye lvl wnd spd.9 11 11 11 12 13 11
Eye lvl wnd gst.13 15 17 17 17 18 17
Surface wnd dir.SW SW SW SW SW SW SW
Surface wnd spd.15 18 19 19 20 21 19
Surface wnd gst.21 25 28 28 29 30 28
Mix hgt (kft)...2.9 4.4 5.7 7.1 7.3 7.3 6.3
Transp wind dir.W SW SW SW SW SW SW
Transp wind spd.21 24 26 28 28 29 30
GFDI............0 0 0 0 0 0 0
Haines index....5 5 6 6 6 6 6
SDspl kt-ft/100057 96 131 164 186 183 136
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly cloudy (60-70 percent). Chance of
sprinkles early in the evening. Slight chance
of rain showers overnight.
Temperature.........Min 52.
RH..................Max 71 percent.
Eye level winds.....South winds up to 10 mph.
Surface winds (mph).South winds 8 to 16 mph.
Wind (20 ft)........South winds 6 to 14 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 14 to 23 mph decreasing to 9 to 18
mph early in the evening.
Smoke dispersal.....Excellent (71700 knot-ft) early in the evening
decreasing to poor (0 knot-ft) late in the
night.
GFDI................0.
Haines Index........6 or high potential for large plume dominated
fire growth.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........38 42 59 62 64 63
Weather cov..... CHANCE S CHC S CHC
Weather type....NONE RNSHWR NONE NONE RNSHWR RNSHWR
Tstm cov........
Temp............69 65 59 58 58 55
RH..............39 46 55 53 55 61
20 ft wind......SW 13 S 8 S 8 S 8 S 8 S 6
20 ft wind gust.18 10 10 10 10
Eye level wind..SW 10 S 6 S 6 S 6 S 6 S 4
Eye lvl wnd gst.14 7 8 8 8 5
Surface wind....SW 16 S 10 S 10 S 10 S 10 S 8
Surface wnd gst.23 12 13 13 13
Mix hgt (ft)....4400 500 500 400 500 600
Transport wind..SW 23 SW 12 S 12 S 13 S 17 SW 13
GFDI............0 0 0 0 0 0
Haines index....6 6 6 6 6 6
SDspl kt-ft/100072 0 5 6 7 7
.WEDNESDAY...
Sky/weather.........Mostly sunny (40-50 percent). Chance of rain
showers through the day. Slight chance of
thunderstorms in the afternoon.
Temperature.........Max 70.
RH..................Min 44 percent.
Eye level winds.....South winds up to 6 mph shifting to the west 5
to 6 mph in the afternoon.
Surface winds (mph).Southeast winds around 6 mph increasing to
south 6 to 10 mph in the morning, then shifting
to the west 9 to 10 mph in the afternoon.
Wind (20 ft)........Southeast winds around 5 mph increasing to 5 to
9 mph in the morning, then shifting to the west
8 to 9 mph in the afternoon. Gusty and erratic
winds expected near thunderstorms late in the
afternoon.
Mixing height.......6500 ft AGL.
Transport winds.....South 8 to 12 mph shifting to the southeast 14
to 18 mph in the late morning and early
afternoon, then shifting to the west 15 to 16
mph late in the afternoon.
Smoke dispersal.....Poor (2800 knot-ft) early in the morning
increasing to excellent (82600 knot-ft) in the
afternoon.
GFDI................0.
Haines Index........5 to 6 or moderate to high potential for large
plume dominated fire growth.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........61 56 49 36 39 32
Weather cov.....S CHC CHANCE CHANCE CHANCE CHANCE CHANCE
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........ S CHC
Temp............54 55 62 66 69 69
RH..............66 69 58 50 44 45
20 ft wind......SE 5 SE 5 SE 7 S 8 W 7 W 8
20 ft wind gust. 8 10 8 10
Eye level wind..SE 4 SE 4 SE 5 S 6 W 5 W 6
Eye lvl wnd gst. 6 7 6 8
Surface wind....SE 6 SE 6 SE 9 S 10 W 9 W 10
Surface wnd gst. 10 12 10 13
Mix hgt (ft)....400 500 1800 4600 6200 6200
Transport wind..S 8 S 9 SE 14 S 18 W 16 W 15
GFDI............0 0 0 0 0 0
Haines index....6 6 6 6 5 5
SDspl kt-ft/10003 6 21 51 76 81
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s.
Northwest winds around 12 mph.
.FRIDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
in the mid 40s. Highs in the lower 70s. North winds around
14 mph.
.SATURDAY...
Mostly clear. Lows in the upper 40s. Highs in the lower 70s.
Northwest winds around 11 mph.
$$
Forecaster...Darrah
Requested by...Matt Dollison
Type of request...PRESCRIBED
.TAG 2413340.0/OAX
.DELDT 05/07/24
.FormatterVersion 2.0.0
.EMAIL matt.dollison@dnr.iowa.gov