Text Products for FWS Issued by ARX

Spot Forecast
Issued by NWS La Crosse, WI
Versions: 1 2 3 4 5 6 7 8 9 10 11 12
000
FNUS73 KARX 250900
FWSARX

Spot Forecast for Oronoco Prairie SNA...Minnesota DNR
National Weather Service La Crosse WI
400 AM CDT Thu Apr 25 2024

Forecast is based on ignition time of 0900 CDT on April 25.
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...

High pressure overhead today resulting in sunny skies and dry
conditions. An approaching weather system to our west will help to
increase southeasterly winds today. Wind gusts up to 25mph will be
possible. With lighter winds in the morning, fair smoke dispersal
is expected. Minimum relative humidity values in the afternoon will
be around 30 percent. Winds will also increase overnight into
Friday as the system gets closer. Wet and windy conditions for
Friday are expected.


.REST OF TODAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
Temperature.........46 at ignition...Max 64.
RH..................58 percent at ignition...Min 30 percent.
Wind (20 ft)........Winds south at 9 mph at ignition...otherwise
                    Southeast winds 9 to 15 mph.
Mixing height.......1100 ft AGL at ignition...otherwise 2500 ft AGL
                    increasing to 4700 ft AGL in the afternoon.
Transport winds.....South 17 to 22 mph.
Smoke dispersal.....Fair /16500 knot-ft/ at ignition.
                    Max...excellent /87700 knot-ft/.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........36  22  33  31  31  27  18  17  23
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0
Temp............46  53  56  58  61  62  63  64  64
RH..............58  50  43  40  35  33  32  31  30
20 FT wind dir..S   S   S   SE  SE  SE  SE  SE  SE
20 FT wind spd..9   10  11  12  13  13  13  13  15
20 FT wind gust.14  15  16  18  20  20  20  21  20
Mix hgt (kft)...1.1 1.6 2.5 3.9 4.4 4.7 4.6 4.6 4.6
Transp wind dir.S   S   S   S   S   S   S   S   S
Transp wind spd.17  17  18  20  21  20  21  21  22
Haines index....4   4   4   4   4   4   4   4   4
SDspl kt-ft/100017  24  40  66  80  80  84  83  88

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    rain showers overnight. Chance of rain showers
                    after 3 am.
CWR.................10 percent increasing to 40 percent overnight.
Temperature.........Min 44.
RH..................Max 65 percent.
Wind (20 ft)........Southeast winds 12 to 18 mph with gusts to
                    around 27 mph.
Mixing height.......4000 ft AGL decreasing to 500 ft AGL.
Transport winds.....Southeast 18 to 25 mph.
Smoke dispersal.....Excellent (80700 knot-ft) early in the evening
                    decreasing to poor (9000 knot-ft) late in the
                    night.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........30     38     42     61     66     86
Weather cov.....                            S CHC  CHANCE
Weather type....NONE   NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........
CWR.............0      0      0      0      20     30
Temp............63     58     52     50     48     46
RH..............31     37     46     50     54     63
20 ft wind......SE 13  SE 12  SE 13  SE 16  SE 16  SE 17
20 ft wind gust.19     20     21     23     23     26
Mix hgt (ft)....4000   600    600    500    700    700
Transport wind..S 23   SE 20  SE 20  SE 20  SE 21  SE 24
Haines index....4      5      5      5      5      5
SDspl kt-ft/100081     11     10     9      13     15

.FRIDAY...

Sky/weather.........Cloudy (85-95 percent). Slight chance of
                    thunderstorms in the morning. Rain showers
                    through the day. Chance of thunderstorms in the
                    afternoon.
CWR.................90 percent.
Temperature.........Max 58.
RH..................Min 63 percent.
Wind (20 ft)........Southeast winds 18 to 21 mph with gusts to
                    around 33 mph. Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......2300 ft AGL.
Transport winds.....Southeast 25 to 33 mph increasing to 33 to 35
                    mph in the afternoon.
Smoke dispersal.....Fair (22000 knot-ft) early in the morning
                    increasing to excellent (68300 knot-ft) in the
                    afternoon.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........92     89     93     93     92     91
Weather cov.....CHANCE DEFNTE DEFNTE DEFNTE DEFNTE DEFNTE
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........       S CHC  S CHC  S CHC  S CHC  CHANCE
CWR.............50     80     80     80     90     90
Temp............46     46     50     52     53     54
RH..............68     68     63     66     69     71
20 ft wind......SE 19  SE 18  SE 19  SE 21  SE 21  SE 20
20 ft wind gust.27     27     32     33     32     32
Mix hgt (ft)....1000   1600   1700   2000   2200   2300
Transport wind..SE 25  SE 29  SE 33  SE 35  SE 35  SE 35
Haines index....5      4      4      4      3      3
SDspl kt-ft/100022     40     49     59     66     68

$$
Forecaster...JRC
Requested by...Dominic Ruis
Type of request...PRESCRIBED
.TAG 2412355.0/ARX
.DELDT 04/25/24
.FormatterVersion 2.0.0
.EMAIL dominic.ruis@state.mn.us
National Weather Service Weather Forecast Office
