Spot Forecast
Issued by NWS Omaha/Valley, NE
Issued by NWS Omaha/Valley, NE
156
FNUS73 KOAX 101009
FWSOAX
Spot Forecast for Possum Hollow WMA...Iowa DNR
National Weather Service Omaha/Valley NE
509 AM CDT Fri May 10 2024
Forecast is based on ignition time of 1000 CDT on May 10.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
Fire danger remains low with recent rains and the greenup is fully
underway. Min RH values is unlikely to slip below 30%. Today will
be dry and sunny with a wave of clouds working north to south
over the course of the day. The clouds should pass your neck of
the woods between 4pm to 6pm. Smoke dispersal should be better
than normal.
Strongest Possible Wind Speeds on Day of Burn: 19 mph gusts
Lowest Possible Relative Humidity on Day of Burn: 30%
.REST OF TODAY...
Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 75.
Min humidity........36 percent.
Eye level winds.....Northwest winds up to 8 mph.
Surface winds (mph).Northwest winds 8 to 14 mph.
Wind (20 ft)........Northwest winds 7 to 12 mph.
Mixing height.......9000 ft AGL.
Transport winds.....Northwest 13 to 21 mph.
Smoke dispersal.....Good (31800 knot-ft) early in the morning
increasing to excellent (110400 knot-ft) in the
afternoon increasing to excellent (114000
knot-ft) in the afternoon.
GFDI................0.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........6 19 25 50 31 44 53 62
Weather cov.....
Weather type....
Tstm cov........
Temp............66 70 71 74 75 75 75 74
RH..............60 51 43 39 36 37 37 39
20 FT wind dir..W NW NW NW NW NW NW NW
20 FT wind spd..6 8 10 11 10 10 10 11
20 FT wind gust.10 12 14 14 14 14 14 14
Eye lvl wnd dir.W NW NW NW NW NW NW NW
Eye lvl wnd spd.4 6 8 8 8 8 8 8
Eye lvl wnd gst.7 9 10 11 10 10 10 11
Surface wnd dir.W NW NW NW NW NW NW NW
Surface wnd spd.8 10 13 14 13 13 13 14
Surface wnd gst.12 15 17 18 17 17 17 18
Mix hgt (kft)...2.9 5.7 7.5 8.0 8.2 8.7 9.0 8.1
Transp wind dir.NW NW NW NW NW NW NW NW
Transp wind spd.13 18 20 21 20 21 20 20
GFDI............0 0 0 0 0 0 0 0
Haines index....4 4 4 5 5 5 5 5
SDspl kt-ft/100032 68 110 144 163 167 154 114
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly clear (0-10 percent).
Min temperature.....Around 48.
Max humidity........80 percent.
Eye level winds.....Northwest winds up to 7 mph in the evening and
overnight becoming light.
Surface winds (mph).Northwest winds 6 to 11 mph in the evening and
overnight becoming light.
Wind (20 ft)........Northwest winds 5 to 9 mph in the evening and
overnight becoming light.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 12 to 20 mph shifting to the north 7
to 9 mph overnight.
Smoke dispersal.....Excellent (63300 knot-ft) early in the evening
decreasing to poor (1600 knot-ft) late in the
night.
GFDI................0.
Haines Index........5 or moderate potential for large plume
dominated fire growth.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........31 36 4 11 4 5
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Temp............74 68 61 58 55 50
RH..............42 46 57 65 70 79
20 ft wind......NW 9 NW 7 NW 6 NW 6 NW 5 NW 4
20 ft wind gust.13 10 8 7 6 6
Eye level wind..NW 7 NW 5 NW 4 NW 4 NW 4 NW 3
Eye lvl wnd gst.10 8 6 5 4
Surface wind....NW 11 NW 9 NW 8 NW 8 NW 6 NW 5
Surface wnd gst.16 13 10 9 7 7
Mix hgt (ft)....4700 500 400 400 400 400
Transport wind..NW 20 NW 14 NW 13 N 13 N 9 N 8
GFDI............0 0 0 0 0 0
Haines index....5 5 5 5 5 5
SDspl kt-ft/100063 5 5 4 4 3
.SATURDAY...
Sky/weather.........Sunny (10-20 percent).
Max temperature.....Around 78.
Min humidity........29 percent.
Eye level winds.....Light winds becoming west up to 5 mph late in
the morning.
Surface winds (mph).Light winds becoming west 6 to 9 mph late in
the morning.
Wind (20 ft)........Northwest winds 5 to 8 mph early in the morning
becoming light, then becoming northwest 5 to 8
mph late in the morning.
Mixing height.......8100 ft AGL.
Transport winds.....Northwest 6 to 14 mph.
Smoke dispersal.....Poor (1100 knot-ft) early in the morning
increasing to excellent (97000 knot-ft) in the
afternoon.
GFDI................0.
Haines Index........5 or moderate potential for large plume
dominated fire growth.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........2 0 1 0 13 34
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Temp............49 53 66 73 77 78
RH..............78 75 48 36 30 29
20 ft wind......NW 4 NW 4 W 4 NW 6 NW 7 NW 6
20 ft wind gust.5 5 6 8 10 8
Eye level wind..NW 3 NW 3 W 3 NW 4 NW 5 NW 4
Eye lvl wnd gst.4 4 4 6 8 6
Surface wind....NW 5 NW 5 W 5 NW 8 NW 9 NW 8
Surface wnd gst.6 6 7 10 13 10
Mix hgt (ft)....400 500 2100 6700 7800 8100
Transport wind..NW 6 W 7 NW 9 NW 14 NW 13 NW 12
GFDI............0 0 0 0 0 0
Haines index....5 5 5 5 5 5
SDspl kt-ft/10001 3 17 69 97 81
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Mostly cloudy. Showers likely and chance of thunderstorms. Lows
in the lower 50s. Highs in the upper 70s. Southwest winds around
7 mph.
.MONDAY...
Showers likely and chance of thunderstorms. Lows in the mid 50s.
Highs in the lower 70s. South winds around 11 mph.
.TUESDAY...
Partly cloudy. Chance of showers. Lows around 50. Highs in the
mid 70s. Northeast winds around 7 mph.
$$
Forecaster...Nicolaisen
Requested by...Matt Dollison
Type of request...PRESCRIBED
.TAG 2413608.0/OAX
.DELDT 05/10/24
.FormatterVersion 2.0.0
.EMAIL matt.dollison@dnr.iowa.gov