Text Products for FWS Issued by OAX

Spot Forecast
Issued by NWS Omaha/Valley, NE
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000
FNUS73 KOAX 190932
FWSOAX

Spot Forecast for Weaver IHAP...Iowa DNR
National Weather Service Omaha/Valley NE
432 AM CDT Fri Apr 19 2024

Forecast is based on ignition time of 0800 CDT on April 19.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Mostly sunny skies are expected this morning with some increase in
clouds by afternoon. Temperatures will warm into the low to mid
50s with lowest relative humidity values of 30 to 35 percent
developing in 4 pm to 5 pm timeframe. West-northwest winds of 5
to 10 mph at 8 AM will strengthen through the remainder of the
morning into afternoon with peak sustained speeds of 15 to 20 mph
occurring in the 2 pm to 5 pm timeframe. Peak gusts of 25 to 30
mph are expected at that time. Winds will diminish to 10 to 15 mph
by 7 pm, and less than 10 mph by 10 pm.

Strongest Possible Wind Speeds on Day of Burn: sustained: 20 mph,
gust: 30 mph

Lowest Possible Relative Humidity on Day of Burn: 30 percent

.REST OF TODAY...

Sky/weather.........Sunny (15-25 percent). Areas of frost early in
                    the morning.
Max temperature.....Around 53.
Min humidity........33 percent.
Eye level winds.....Northwest winds up to 11 mph with gusts to
                    around 15 mph increasing to 11 to 13 mph with
                    gusts to around 19 mph in the afternoon.
Surface winds (mph).Northwest winds 8 to 21 mph with gusts to
                    around 32 mph.
Wind (20 ft)........Northwest winds 10 to 18 mph with gusts to
                    around 26 mph.
Mixing height.......6500 ft AGL.
Transport winds.....West 10 to 16 mph increasing to northwest 23 to
                    31 mph in the late morning and afternoon.
Smoke dispersal.....Fair (23500 knot-ft) early in the morning
                    increasing to excellent (121600 knot-ft) in the
                    afternoon increasing to excellent (143900
                    knot-ft) in the afternoon.
GFDI................2.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   3   4   4   8   6   17  29  31  34
Weather cov.....ARS
Weather type....FST
Tstm cov........
Temp............35  39  46  48  48  51  52  52  53  51
RH..............76  65  46  41  39  36  35  34  34  33
20 FT wind dir..W   NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..6   9   12  14  15  16  17  17  17  16
20 FT wind gust.    11  18  20  22  24  26  25  26  24
Eye lvl wnd dir.W   NW  NW  NW  NW  NW  NW  NW  NW  NW
Eye lvl wnd spd.4   7   9   11  11  12  13  13  13  12
Eye lvl wnd gst.5   8   13  15  17  18  19  19  19  18
Surface wnd dir.W   NW  NW  NW  NW  NW  NW  NW  NW  NW
Surface wnd spd.8   11  15  18  19  20  21  21  21  20
Surface wnd gst.    14  22  25  28  30  32  31  32  30
Mix hgt (kft)...0.4 1.2 3.3 4.5 5.0 5.5 6.0 6.2 6.5 6.5
Transp wind dir.W   NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.10  16  23  26  28  30  30  31  30  29
GFDI............0   1   2   2   3   4   4   4   4   4
Haines index....5   5   5   5   5   4   4   4   4   4
SDspl kt-ft/100024  44  67  94  122 144 160 168 168 164

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent). Widespread frost
                    after 3 am.
Min temperature.....Around 27.
Max humidity........78 percent.
Eye level winds.....Northwest winds up to 11 mph. Gusts up to 29
                    mph early in the evening.
Surface winds (mph).Northwest winds 8 to 19 mph. Gusts up to 29 mph
                    early in the evening.
Wind (20 ft)........Northwest winds 7 to 16 mph. Gusts up to 29 mph
                    early in the evening.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 25 to 29 mph decreasing to 12 to 16
                    mph early in the evening.
Smoke dispersal.....Excellent (88900 knot-ft) decreasing to good
                    (43600 knot-ft) early in the evening decreasing
                    to poor (0 knot-ft) late in the night in the
                    late evening and overnight.
GFDI................2.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........13     21     9      5      6      11
Weather cov.....                                   WIDSPD
Weather type....NONE   NONE   NONE   NONE   NONE   FROST
Tstm cov........
Temp............51     45     40     36     32     29
RH..............34     44     53     59     67     71
20 ft wind......NW 15  NW 12  NW 9   NW 8   NW 7   NW 6
20 ft wind gust.23     18     11                   7
Eye level wind..NW 11  NW 9   NW 7   NW 6   NW 5   NW 4
Eye lvl wnd gst.17     13     8                    5
Surface wind....NW 19  NW 15  NW 11  NW 10  NW 9   NW 8
Surface wnd gst.29     22     14                   9
Mix hgt (ft)....6300   600    600    500    500    500
Transport wind..NW 29  NW 16  NW 16  NW 13  NW 12  NW 14
GFDI............3      2      1      0      0      0
Haines index....4      4      4      4      3      3
SDspl kt-ft/1000152    89     8      0      6      7

.SATURDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 51.
Min humidity........36 percent.
Eye level winds.....Northwest winds 5 to 8 mph.
Surface winds (mph).Northwest winds 9 to 14 mph.
Wind (20 ft)........Northwest winds 8 to 12 mph.
Mixing height.......6500 ft AGL.
Transport winds.....Northwest 12 to 21 mph.
Smoke dispersal.....Poor (300 knot-ft) early in the morning
                    increasing to excellent (94700 knot-ft) in the
                    afternoon increasing to excellent (101800
                    knot-ft) in the afternoon.
GFDI................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........6      14     10     26     46     49
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............28     29     38     44     47     49
RH..............78     73     56     47     42     40
20 ft wind......NW 7   NW 8   NW 10  NW 11  NW 11  NW 11
20 ft wind gust.       10     14     17     17     17
Eye level wind..NW 5   NW 6   NW 8   NW 8   NW 8   NW 8
Eye lvl wnd gst.       8      11     13     13     13
Surface wind....NW 9   NW 10  NW 13  NW 14  NW 14  NW 14
Surface wnd gst.       13     18     21     21     21
Mix hgt (ft)....500    1500   4000   5300   6000   6300
Transport wind..NW 13  N 16   N 20   NW 21  NW 21  NW 20
GFDI............0      0      1      1      2      2
Haines index....3      3      3      3      3      3
SDspl kt-ft/10000      23     69     95     107    107

$$
Forecaster...Mead
Requested by...Kody Wohlers
Type of request...PRESCRIBED
.TAG 2411368.0/OAX
.DELDT 04/19/24
.FormatterVersion 2.0.0
.EMAIL kwohlers@inhf.org
National Weather Service Weather Forecast Office
