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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