000
FNUS73 KMKX 211243
FWSMKX

Spot Forecast for WWOO Rx...WI DNR
National Weather Service Milwaukee/Sullivan WI
743 AM CDT Sun Apr 21 2024

Forecast is based on ignition time of 1100 CDT on April 21.

Please contact the National Weather Service if conditions become
unrepresentative or if you have questions/concerns about this forecast.

.DISCUSSION...

Northwesterly winds around 10 mph are expected at ignition.
Expect gusts of 20 to 25 mph to develop between 1300 and 1500 CDT,
with mixing heights rising to 6000-7000 ft around the same time
frame. A combination of high mixing heights and brisk
northwesterly winds will provide excellent smoke dispersal this
afternoon. RH values are expected to fall between 25 and 30
percent this afternoon.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........48 at ignition...Max 58.
RH..................40 percent at ignition...Min 28 percent.
Wind (20 ft)........Winds northwest at 9 mph at
                    ignition...otherwise Northwest winds 9 to 12
                    mph.
Mixing height.......4900 ft AGL at ignition...otherwise 7100 ft
                    AGL.
Transport winds.....Northwest 18 to 23 mph.
Smoke dispersal.....Excellent /78600 knot-ft/ at ignition.
                    Max...excellent /142100 knot-ft/.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 5.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   6   8   13  18  24  22
Weather cov.....
Weather type....
Tstm cov........
Temp............48  50  52  53  56  57  56
RH..............40  37  33  32  29  29  29
20 FT wind dir..NW  W   W   W   NW  NW  NW
20 FT wind spd..9   10  11  11  11  12  11
20 FT wind gust.14  14  16  16  17  17  16
Mix hgt (kft)...4.9 5.4 6.0 6.5 6.9 7.1 6.0
Transp wind dir.NW  W   NW  NW  NW  NW  NW
Transp wind spd.18  20  20  21  21  23  22
Haines index....4   4   5   5   5   5   5
SDspl kt-ft/100079  92  102 117 124 142 114

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent). Areas of frost
                    after 3 am.
Temperature.........Min 35.
RH..................Max 82 percent.
Wind (20 ft)........West winds 5 to 9 mph shifting to the southwest
                    5 to 6 mph overnight.
Mixing height.......300 ft AGL.
Transport winds.....West 12 to 21 mph decreasing to 10 to 12 mph in
                    the late evening and overnight.
Smoke dispersal.....Excellent (69500 knot-ft) early in the evening
                    decreasing to poor (2700 knot-ft) late in the
                    night.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........20  18  14  9   4   3   2   1   1   1   1   1
Weather cov.....                                    ARS ARS ARS
Weather type....                                    FST FST FST
Tstm cov........
Temp............55  53  48  44  44  42  41  40  39  37  37  36
RH..............30  35  44  55  57  65  67  67  70  75  75  79
20 FT wind dir..NW  W   W   W   W   W   W   W   SW  SW  SW  SW
20 FT wind spd..9   7   6   6   5   5   6   6   6   5   5   5
20 FT wind gust.14  12  10  8   7   6               6   6   6
Mix hgt (kft)...3.9 0.6 0.6 0.4 0.4 0.4 0.3 0.3 0.3 0.3 0.3 0.3
Transp wind dir.NW  W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.21  13  12  10  10  12  10  10  10  10  10  10
Haines index....5   5   5   5   5   5   5   5   5   5   5   5
SDspl kt-ft/100070  7   7   4   3   4   3   3   3   3   3   3

.MONDAY...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny (55-65 percent). Areas of frost early in
                    the morning. Slight chance of rain showers late
                    in the afternoon.
Temperature.........Max 64.
RH..................Min 27 percent.
Wind (20 ft)........Southwest winds 5 to 14 mph with gusts to
                    around 21 mph increasing to around 15 mph with
                    gusts to around 22 mph late in the afternoon.
Mixing height.......5100 ft AGL.
Transport winds.....Southwest 10 to 18 mph increasing to 22 to 29
                    mph late in the morning.
Smoke dispersal.....Poor (2800 knot-ft) early in the morning
                    increasing to excellent (97200 knot-ft) in the
                    afternoon increasing to excellent (81600
                    knot-ft) in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1   1   9   17  24  34  43  52  52  53  53  63
Weather cov.....ARS                                         SCH
Weather type....FST                                         RW
Tstm cov........
Temp............36  38  44  49  54  57  59  61  62  62  62  62
RH..............79  76  60  52  43  37  33  31  28  28  30  30
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..5   5   6   7   9   11  12  13  14  15  15  15
20 FT wind gust.6   7   10  13  16  18  19  20  21  22  22  22
Mix hgt (kft)...0.3 0.3 0.6 1.2 2.3 4.2 4.6 5.1 5.0 4.9 4.7 3.5
Transp wind dir.SW  SW  SW  W   SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.10  10  12  15  18  22  24  25  26  28  29  26
Haines index....5   5   5   5   5   5   5   5   5   5   5   5
SDspl kt-ft/10003   3   6   16  37  79  97  112 114 117 119 82

$$
Forecaster...MH
Requested by...Duerkop
Type of request...PRESCRIBED
.TAG 2411572.0/MKX
.DELDT 04/21/24
.FormatterVersion 2.0.0
.EMAIL peter.duerkop@wisconsin.gov