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 13 14
000
FNUS73 KARX 130941
FWSARX

Spot Forecast for Medford Farm Unit 4 Rx...US FOREST SERVCE
National Weather Service La Crosse WI
441 AM CDT Sat Apr 13 2024

Forecast is based on ignition time of 1100 CDT on April 13.
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...Smoke dispersal will be fair around ignition time
but will quickly improve to excellent this afternoon as winds and
mixing heights increase. Otherwise a dry and warm day is on tap
with mostly sunny skies and afternoon minimum RH around 30%.
Winds will become breezy out of the south to southwest, gusting
20 to 25 mph. Small chance (20%) for a sprinkle or brief, light
shower grazing the area this evening as a cold front pushes
through. This will bring a shift to northwest winds on Sunday (not
as breezy), but otherwise another warm and dry day on tap.

.TODAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Temperature.........53 at ignition...Max 68.
RH..................46 percent at ignition...Min 30 percent.
Wind (20 ft)........Winds south at 6 mph at ignition...otherwise
                    Light winds becoming south 5 to 12 mph with
                    gusts to around 22 mph in the late morning and
                    afternoon.
Mixing height.......1800 ft AGL increasing to 2500 ft AGL at
                    ignition...otherwise 4000 ft AGL late in the
                    morning.
Transport winds.....South 3 to 12 mph increasing to southwest 24 to
                    26 mph.
Smoke dispersal.....Fair /25200 knot-ft/ at ignition.
                    Max...excellent /90800 knot-ft/.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4   5   15  20  35  18  30
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
Temp............53  57  61  63  66  67  68
RH..............46  40  35  34  30  30  32
20 FT wind dir..S   S   S   S   S   S   S
20 FT wind spd..6   8   9   10  12  12  12
20 FT wind gust.12  13  14  16  20  22  21
Mix hgt (kft)...2.5 2.8 3.2 3.5 3.7 4.0 3.9
Transp wind dir.SW  S   S   S   S   SW  SW
Transp wind spd.12  13  15  18  22  24  26
Haines index....4   4   4   4   4   4   4
SDspl kt-ft/100025  31  41  55  71  83  91

.TONIGHT...

Sky/weather.........Partly cloudy (20-30 percent) then becoming
                    clear (0-10 percent). Slight chance of rain
                    showers late in the evening.
CWR.................10 percent increasing to 20 percent late in the
                    evening, then decreasing to 10 percent
                    overnight.
Temperature.........Min 44.
RH..................Max 86 percent.
Wind (20 ft)........South winds 7 to 11 mph with gusts to around 21
                    mph shifting to the northwest 5 to 6 mph
                    overnight.
Mixing height.......3000 ft AGL decreasing to 300 ft AGL.
Transport winds.....Southwest around 23 mph decreasing to 10 to 15
                    mph in the evening and overnight, then shifting
                    to the north 9 to 10 mph overnight.
Smoke dispersal.....Good (59100 knot-ft) early in the evening
                    decreasing to poor (2700 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 (%).........32     35     36     22     5      3
Weather cov.....              S CHC  S CHC
Weather type....NONE   NONE   RNSHWR RNSHWR NONE   NONE
Tstm cov........
CWR.............0      10     20     20     10     10
Temp............68     62     59     55     52     48
RH..............33     46     55     72     77     86
20 ft wind......S 11   S 8    S 8    SW 8   NW 6   N 5
20 ft wind gust.21     15     16     13     11     8
Mix hgt (ft)....3000   700    600    500    400    300
Transport wind..SW 23  S 12   S 15   SW 14  NW 10  N 9
Haines index....4      4      4      4      5      5
SDspl kt-ft/100059     7      7      6      4      3

.SUNDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Temperature.........Max 67.
RH..................Min 30 percent.
Wind (20 ft)........Northwest winds 5 to 11 mph.
Mixing height.......1900 ft AGL increasing to 6800 ft AGL.
Transport winds.....North 9 to 17 mph shifting to the northwest 16
                    to 23 mph late in the morning.
Smoke dispersal.....Poor (3100 knot-ft) early in the morning
                    increasing to excellent (121400 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 (%).........4      4      4      4      5      7
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............45     48     58     63     66     67
RH..............86     80     57     43     33     30
20 ft wind......NW 6   NW 7   NW 8   NW 10  NW 11  NW 10
20 ft wind gust.9      11     14     16     18     16
Mix hgt (ft)....400    600    1900   4900   5900   6800
Transport wind..N 9    NW 10  N 17   NW 21  NW 23  NW 20
Haines index....5      4      4      4      4      4
SDspl kt-ft/10003      5      29     89     119    116

$$
Forecaster...MK
Requested by...RXB2-t
Type of request...PRESCRIBED
.TAG 2410566.0/ARX
.DELDT 04/13/24
.FormatterVersion 2.0.0
.EMAIL joseph.f.eucolono@usda.gov,joan.lawrance@usda.gov
National Weather Service Weather Forecast Office
