Text Products for FWS Issued by OAX

Spot Forecast
Issued by NWS Omaha/Valley, NE
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000
FNUS73 KOAX 241222
FWSOAX

Spot Forecast for Reap 40 Rx Burn Unit...Partner Agency
National Weather Service Omaha/Valley NE
722 AM CDT Wed Apr 24 2024

Forecast is based on ignition time of 1000 CDT on April 24.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Calm northerly winds this morning will gradually shift to
southeasterly after sunrise. Winds will increase through the late
morning to speeds of 8 to 10 mph with gusts up to 12 mph possible.
Winds will remain at this speed throughout the afternoon and into
the evening. Relative humidity values will decrease throughout the
afternoon before reaching their minimum value of 27 percent
around 5-6 pm. Relative humidity will recover overnight.

Cloud cover will increase throughout the day with high
temperatures reaching into the upper 60s. A few sprinkles or light
rain showers will be possible tonight.

Strongest Possible Wind Speeds on Day of Burn: 12 mph

Lowest Possible Relative Humidity on Day of Burn: 21 percent if
winds are stronger

.REST OF TODAY...

Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 67.
Min humidity........27 percent.
Eye level winds.....East winds around 4 mph in the late morning and
                    early afternoon becoming light, then becoming
                    southeast around 4 mph late in the afternoon.
Surface winds (mph).East winds around 6 mph in the late morning and
                    early afternoon becoming light, then becoming
                    southeast 6 to 8 mph late in the afternoon.
Wind (20 ft)........Southeast winds 5 to 6 mph in the late morning
                    and early afternoon becoming light, then
                    becoming southeast 5 to 6 mph late in the
                    afternoon.
Mixing height.......6200 ft AGL.
Transport winds.....Southeast 5 to 8 mph.
Smoke dispersal.....Poor (8400 knot-ft) early in the morning
                    increasing to good (37200 knot-ft) in the
                    afternoon.
GFDI................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........39  10  1   1   8   16  22  25
Weather cov.....
Weather type....
Tstm cov........
Temp............52  57  60  62  64  65  66  67
RH..............58  46  38  35  32  30  28  27
20 FT wind dir..SE  SE  E   E   SE  SE  SE  SE
20 FT wind spd..5   5   5   5   4   5   6   6
20 FT wind gust.6   6   6   6   6   6   7   7
Eye lvl wnd dir.SE  SE  E   E   SE  SE  SE  SE
Eye lvl wnd spd.4   4   4   4   3   4   4   4
Eye lvl wnd gst.                4   5   5   5
Surface wnd dir.SE  SE  E   E   SE  SE  SE  SE
Surface wnd spd.6   6   6   6   5   6   8   8
Surface wnd gst.7   7   7   7   7   8   9   9
Mix hgt (kft)...1.7 3.9 4.9 5.6 6.0 6.2 6.2 5.9
Transp wind dir.E   E   E   E   SE  SE  S   S
Transp wind spd.6   6   5   6   6   6   7   8
GFDI............0   0   1   1   1   1   1   1
Haines index....4   4   4   4   4   4   4   4
SDspl kt-ft/10008   15  22  28  33  36  37  36

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (65-75 percent). Chance of
                    sprinkles late in the evening.
Min temperature.....Around 48.
Max humidity........69 percent.
Eye level winds.....Southeast winds up to 8 mph.
Surface winds (mph).Southeast winds 8 to 13 mph.
Wind (20 ft)........Southeast winds 6 to 12 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southeast 9 to 18 mph.
Smoke dispersal.....Good (31600 knot-ft) early in the evening
                    decreasing to poor (3800 knot-ft) late in the
                    night.
GFDI................1.
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 (%).........35     44     42     77     77     64
Weather cov.....              CHANCE CHANCE
Weather type....NONE   NONE   RNSHWR RNSHWR NONE   NONE
Tstm cov........
Temp............66     62     55     54     52     50
RH..............27     32     44     48     56     62
20 ft wind......SE 6   SE 6   SE 7   SE 7   SE 8   SE 10
20 ft wind gust.8                    8      11     13
Eye level wind..SE 4   SE 4   SE 5   SE 5   SE 6   SE 8
Eye lvl wnd gst.6      5             6      8      10
Surface wind....SE 8   SE 8   SE 9   SE 9   SE 10  SE 13
Surface wnd gst.10                   10     14     16
Mix hgt (ft)....5400   500    500    500    600    700
Transport wind..S 9    SE 9   SE 13  SE 16  SE 15  SE 18
GFDI............1      1      1      1      1      1
Haines index....4      4      4      4      4      4
SDspl kt-ft/100032     19     5      5      9      11

.THURSDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    rain showers in the morning. Chance of rain
                    showers in the afternoon. Slight chance of
                    thunderstorms late in the afternoon.
Max temperature.....Around 65.
Min humidity........48 percent.
Eye level winds.....Southeast winds 8 to 13 mph. Gusts up to 35
                    mph.
Surface winds (mph).Southeast winds 13 to 21 mph. Gusts up to 35
                    mph.
Wind (20 ft)........Southeast winds 12 to 20 mph. Gusts up to 35
                    mph. Gusty and erratic winds expected near
                    thunderstorms late in the afternoon.
Mixing height.......2900 ft AGL.
Transport winds.....Southeast 18 to 24 mph increasing to 28 to 35
                    mph in the late morning and afternoon.
Smoke dispersal.....Poor (9000 knot-ft) early in the morning
                    increasing to excellent (86600 knot-ft) in the
                    afternoon.
GFDI................3.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........69     71     84     62     69     81
Weather cov.....       S CHC  S CHC  S CHC  CHANCE CHANCE
Weather type....NONE   RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........                                   S CHC
Temp............50     50     55     61     64     64
RH..............65     67     61     51     49     50
20 ft wind......SE 10  SE 11  SE 14  SE 15  SE 17  SE 17
20 ft wind gust.14     16     21     23     25     26
Eye level wind..SE 8   SE 8   SE 11  SE 11  SE 13  SE 13
Eye lvl wnd gst.10     12     16     17     19     20
Surface wind....SE 13  SE 14  SE 18  SE 19  SE 21  SE 21
Surface wnd gst.17     20     26     29     31     33
Mix hgt (ft)....700    900    1500   2400   2300   2900
Transport wind..SE 18  SE 21  SE 28  SE 29  SE 32  SE 35
GFDI............1      1      2      3      4      4
Haines index....4      4      4      4      3      3
SDspl kt-ft/10009      17     37     55     75     87

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Showers and chance of thunderstorms. Lows in the lower 50s. Highs
in the lower 70s. Southeast winds around 21 mph.
.SATURDAY...
Mostly cloudy. Showers likely and chance of thunderstorms. Lows
in the lower 50s. Highs in the lower 70s. South winds around
20 mph.
.SUNDAY...
Showers and chance of thunderstorms. Lows in the lower 50s. Highs
in the mid 60s. East winds around 13 mph.

$$
Forecaster...Nicolaisen
Requested by...Jeff Seago
Type of request...PRESCRIBED
.TAG 2412191.0/OAX
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL jeffrey.seago@dnr.iowa.gov
National Weather Service Weather Forecast Office
