Spot Forecast Issued by NWS Duluth, MN
000
FNUS73 KDLH 241958
FWSDLH
Spot Forecast for Riley WMA...USFS
National Weather Service Duluth MN
258 PM CDT Wed Apr 24 2024
Forecast is based on ignition time of 0800 CDT on April 25.
If there are questions or concerns with this forecast, or if
conditions become unrepresentative, contact the National
Weather Service in Duluth at 218-729-0653.
.DISCUSSION...
Thursday will be mainly sunny and dry once again along with
breezier winds. Afternoon RH values will fall to around 22
percent, although it may trend slightly drier with the stronger
winds. Winds will be from the south-southeast at 6 to 12 mph with
gusts to around 15 mph during the afternoon. Given the good
mixing conditions, smoke dispersal will improve to excellent by
the afternoon. A long duration rain event is expected for Friday
into the weekend with rain becoming likely Friday afternoon with
showers possible Friday morning. Winds Friday will be
southeasterly at 10 to 20 mph with gusts to 25 to 30 mph.
.THURSDAY...
Sky/weather.........Sunny (0-10 percent).
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 60.
Min humidity........22 percent.
Wind (20 ft)........South winds 5 to 9 mph.
Mixing height.......1300 ft AGL increasing to 6000 ft AGL.
Transport winds.....South 8 to 15 mph.
Smoke dispersal.....Poor (5800 knot-ft) increasing to excellent
(71700 knot-ft).
Haines Index........4 or low potential for large plume dominated
fire growth.
Pcpn amount.........0.00 inches.
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1
Temp............37 44 50 53 55 57 59 60 60 59
RH..............58 45 37 31 27 24 23 22 22 22
20 FT wind dir..S S S S S S S S S S
20 FT wind spd..4 5 6 6 7 7 8 8 9 9
20 FT wind gust.9 9 9 11 11 12 12 13 14 14
Mix hgt (kft)...0.7 1.3 2.9 4.1 4.8 5.3 5.7 6.0 6.0 5.8
Transp wind dir.S S S S S S S S S S
Transp wind spd.9 8 10 10 10 10 12 14 14 15
Haines index....4 4 4 4 4 4 4 4 4 4
SDspl kt-ft/10006 10 26 37 43 48 58 72 72 76
.THURSDAY NIGHT...
Sky/weather.........Mostly clear (15-25 percent).
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 33.
Max humidity........66 percent.
Wind (20 ft)........Southeast winds 8 to 12 mph.
Mixing height.......5100 ft AGL decreasing to 2000 ft AGL.
Transport winds.....South 13 to 17 mph.
Smoke dispersal.....Excellent (66800-71900 knot-ft) decreasing to
poor to fair (7900-25100 knot-ft).
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
Pcpn amount.........0.00 inches.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky cover.......CLEAR CLEAR MCLEAR MCLEAR MCLEAR PCLDY
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Chc of pcpn (%).0 0 0 0 0 0
LAL.............1 1 1 1 1 1
Temp............58 50 44 40 37 35
RH..............24 37 50 52 54 56
20 ft wind......S 8 S 8 SE 8 SE 8 SE 8 SE 9
20 ft wind gust.14 14 15 16 16 18
Mix hgt (ft)....5100 700 700 600 600 600
Transport wind..S 16 S 13 S 15 S 15 S 15 SE 16
Haines index....4 5 5 5 5 5
SDspl kt-ft/100072 8 9 8 8 9
.FRIDAY...
Sky/weather.........Partly sunny (60-70 percent) then becoming
cloudy (85-95 percent). Slight chance of rain
in the morning. Chance of rain in the
afternoon.
Chance of pcpn......50 percent.
LAL.................1.
Max temperature.....Around 55.
Min humidity........42 percent.
Wind (20 ft)........Southeast winds 14 to 22 mph. Gusts up to 32
mph increasing to 36 mph late in the morning.
Mixing height.......2700 ft AGL increasing to 2800 ft AGL in the
afternoon.
Transport winds.....Southeast 17 to 25 mph increasing to 29 to 31
mph in the late morning and afternoon.
Smoke dispersal.....Poor to fair (12000-24600 knot-ft) increasing
to good to excellent (58300-75100 knot-ft).
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
Pcpn amount.........0.08 inches.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky cover.......PCLDY MCLDY MCLDY MCLDY CLOUDY CLOUDY
Weather cov..... S CHC S CHC S CHC CHANCE CHANCE
Weather type....NONE RAIN RAIN RAIN RAIN RAIN
Tstm cov........
Chc of pcpn (%).0 20 20 20 50 50
LAL.............1 1 1 1 1 1
Temp............36 40 48 53 55 54
RH..............61 60 50 45 42 44
20 ft wind......SE 13 SE 18 SE 20 SE 20 SE 20 SE 21
20 ft wind gust.21 26 29 32 32 32
Mix hgt (ft)....1000 1300 2100 2700 2800 2400
Transport wind..SE 20 SE 22 SE 29 SE 31 SE 31 SE 31
Haines index....5 5 5 5 4 4
SDspl kt-ft/100017 25 54 73 75 66
$$
Forecaster...Bryan
Requested by...Joanie Lawrence
Type of request...PRESCRIBED
.TAG 2412265.0/DLH
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL joan.lawrence@usda.gov