Spot Forecast
Issued by NWS La Crosse, WI
Issued by NWS La Crosse, WI
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FNUS73 KARX 301058
FWSARX
Spot Forecast for Ballard...US FISH AND WILDLIFE SERVICE
National Weather Service La Crosse WI
558 AM CDT Tue Apr 30 2024
Forecast is based on ignition time of 1000 CDT on April 30.
If conditions become unrepresentative...contact the National Weather
Service.
Please contact our office at (608) 784-8292 if you have questions
or concerns with this forecast.
.DISCUSSION...It will be mostly sunny today. It will be in the mid-50s
at ignition time and then warm into the mid-70s this afternoon. Relative
humidities will be in the 60s at ignition and then drop into the upper 40s
for this afternoon. Winds will be light and variable this morning and
then become south at 5 to 10 mph this afternoon. There will occasional gusts
up to 15 mph this afternoon. Due to the light winds, smoke dispersion will
be initially poor at ignition time. As diurnal mixing occurs later this
morning and afternoon, smoke dispersion will become excellent.
Showers and storms will move through the region tonight. Some of these
storms could be strong to severe between 8 PM and 9 PM. The main threats will
be hail around 1-inch in diameter, wind gusts up to 60 to 65 mph, and a
tornado or two.
It will dry on Wednesday. High temperatures will be in the upper 60s.
Afternoon humidities will fall into the mid-30s. Winds will be west
at 10 to 20 mph in the morning and northwest in the afternoon.
.TODAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Temperature.........57 at ignition...Max 74.
RH..................62 percent at ignition...Min 48 percent.
Wind (20 ft)........Winds west at 2 mph at ignition...otherwise
Light winds becoming south 5 to 11 mph in the
afternoon.
Mixing height.......1700 ft AGL at ignition...otherwise 3200 ft AGL
increasing to 4300 ft AGL late in the
afternoon.
Transport winds.....Southwest 6 to 7 mph shifting to the south 10
to 17 mph early in the afternoon, then
increasing to around 20 mph late in the
afternoon.
Smoke dispersal.....Poor /8600 knot-ft/ at ignition.
Max...excellent /72900 knot-ft/.
Haines Index........4 or low potential for large plume dominated
fire growth at ignition...max 4.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8 8 9 10 20 30 40 50
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 10
Temp............57 61 63 66 69 71 73 74
RH..............62 56 54 52 51 49 48 48
20 FT wind dir..W S S S S S S S
20 FT wind spd..2 3 5 6 8 9 9 11
20 FT wind gust.5 7 9 11 13 15 16 16
Mix hgt (kft)...1.7 2.1 2.5 2.7 3.2 3.7 4.3 4.0
Transp wind dir.W SW S S S S S S
Transp wind spd.6 7 10 13 15 17 20 20
Haines index....4 4 4 4 4 4 4 4
SDspl kt-ft/10009 13 22 30 41 56 73 67
.TONIGHT...
Sky/weather.........Mostly cloudy (75-85 percent) then becoming
partly cloudy (20-30 percent). Showers and
thunderstorms in the evening. Chance of showers
and thunderstorms overnight.
CWR.................10 percent increasing to 90 percent in the
evening and overnight, then decreasing to 10
percent overnight.
Temperature.........Min 50.
RH..................Max 89 percent.
Wind (20 ft)........Southeast winds 10 to 12 mph with gusts to
around 21 mph shifting to the west 9 to 11 mph
with gusts to around 21 mph overnight. Gusty
and erratic winds expected near thunderstorms
early in the evening. Gusty and erratic winds
expected near thunderstorms late in the
evening. Gusty and erratic winds expected near
thunderstorms overnight.
Mixing height.......500 ft AGL.
Transport winds.....South 16 to 22 mph shifting to the west 14 to
21 mph overnight.
Smoke dispersal.....Fair (18100 knot-ft) early in the evening
decreasing to poor (6400 knot-ft) late in the
night.
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 (%).........59 77 96 78 48 6
Weather cov..... LIKELY DEFNTE CHANCE
Weather type....NONE RNSHWR RNSHWR RNSHWR NONE NONE
Tstm cov........ LIKELY CHANCE CHANCE
CWR.............10 60 90 40 10 0
Temp............72 70 65 62 59 53
RH..............51 57 70 81 87 89
20 ft wind......SE 10 SE 11 S 12 SW 13 W 11 W 9
20 ft wind gust.16 18 21 23 21 18
Mix hgt (ft)....1300 600 700 700 800 600
Transport wind..S 16 S 18 S 21 SW 21 W 18 W 15
Haines index....4 4 4 4 4 4
SDspl kt-ft/100018 9 12 12 13 8
.WEDNESDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................10 percent.
Temperature.........Max 69.
RH..................Min 36 percent.
Wind (20 ft)........West winds 8 to 12 mph shifting to the
northwest 8 to 10 mph late in the afternoon.
Mixing height.......1600 ft AGL increasing to 3900 ft AGL in the
late morning and afternoon.
Transport winds.....West 13 to 20 mph shifting to the north 10 to
13 mph late in the afternoon.
Smoke dispersal.....Poor (4900 knot-ft) early in the morning
increasing to excellent (70500 knot-ft) in the
afternoon.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........6 15 14 35 48 56
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
CWR.............0 0 0 0 10 10
Temp............51 52 59 64 67 68
RH..............83 80 55 41 36 36
20 ft wind......W 8 W 9 W 12 NW 12 NW 10 NW 9
20 ft wind gust.14 13 18 19 16 13
Mix hgt (ft)....400 1000 2800 3700 3800 3500
Transport wind..W 13 W 17 W 23 W 22 NW 18 NW 13
Haines index....4 5 5 5 5 5
SDspl kt-ft/10005 15 55 70 61 39
$$
Forecaster...JSB
Requested by...Erik Acker
Type of request...PRESCRIBED
.TAG 2412757.0/ARX
.DELDT 04/30/24
.FormatterVersion 2.0.0
.EMAIL erik_acker@fws.gov