National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FNUS73 KDLH 251039
FWSDLH

Spot Forecast for Riley WMA...USFS
National Weather Service Duluth MN
539 AM CDT Thu Apr 25 2024

Forecast is based on ignition time of 1000 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...

Sunny skies are expected today as high pressure persists over the
region. Winds will be southerly today with speeds of around 6 to
8 mph. Min RH today will be dropping as low as 23 percent around
mid-afternoon as dry air aloft is mixed to the surface. Smoke
dispersal today will be increasing from fair at the time of
ignition at 1000 to excellent this afternoon. Widespread rain
arrives tomorrow afternoon with breezy winds from the southeast.


.TODAY...

Sky/weather.........Sunny (0-5 percent).
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 60.
Min humidity........23 percent.
Wind (20 ft)........South winds 6 to 8 mph.
Mixing height.......4000 ft AGL increasing to 6200 ft AGL in the
                    afternoon.
Transport winds.....South 8 to 14 mph.
Smoke dispersal.....Fair to good (15100-32400 knot-ft) increasing
                    to excellent (62100-71500 knot-ft).
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Pcpn amount.........0.00 inches.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......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
LAL.............1   1   1   1   1   1   1   1
Temp............49  53  56  58  59  59  60  59
RH..............39  33  29  26  25  23  24  24
20 FT wind dir..S   S   S   S   S   S   S   S
20 FT wind spd..5   6   6   7   8   8   8   8
20 FT wind gust.9   11  11  12  13  13  14  14
Mix hgt (kft)...2.2 4.0 5.1 5.7 6.1 6.2 6.2 6.0
Transp wind dir.S   S   S   S   S   S   S   S
Transp wind spd.8   9   9   10  10  12  12  14
Haines index....4   4   4   4   4   4   4   4
SDspl kt-ft/100015  32  41  52  55  63  63  72

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 34.
Max humidity........66 percent.
Wind (20 ft)........Southeast winds 7 to 9 mph. Gusts up to 20 mph
                    early in the morning.
Mixing height.......5400 ft AGL decreasing to 1600 ft AGL.
Transport winds.....South 12 to 16 mph.
Smoke dispersal.....Excellent (65400 knot-ft) decreasing to poor to
                    fair (5300-19800 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............59     51     44     41     39     35
RH..............25     37     50     50     48     51
20 ft wind......S 7    S 7    SE 7   SE 7   SE 7   SE 8
20 ft wind gust.14     14     14     14     15     16
Mix hgt (ft)....5400   700    600    600    600    600
Transport wind..S 14   S 13   S 14   S 15   S 14   SE 16
Haines index....4      4      4      4      5      5
SDspl kt-ft/100065     8      7      8      7      8

.FRIDAY...

Sky/weather.........Partly sunny (60-70 percent) then becoming
                    cloudy (85-95 percent). Slight chance of rain
                    showers late in the morning. Chance of rain
                    showers in the afternoon.
Chance of pcpn......40 percent.
LAL.................1.
Max temperature.....Around 58.
Min humidity........33 percent.
Wind (20 ft)........Southeast winds 10 to 16 mph with gusts to
                    around 26 mph.
Mixing height.......2400 ft AGL increasing to 3000 ft AGL late in
                    the morning.
Transport winds.....Southeast 15 to 24 mph increasing to 29 to 31
                    mph in the late morning and afternoon.
Smoke dispersal.....Poor (8900 knot-ft) increasing to excellent
                    (63600-79100 knot-ft).
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.
Pcpn amount.........0.03 inches.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......PCLDY  MCLDY  MCLDY  MCLDY  MCLDY  CLOUDY
Weather cov.....                     CHANCE CHANCE CHANCE
Weather type....NONE   NONE   NONE   RNSHWR RNSHWR RNSHWR
Tstm cov........
Chc of pcpn (%).0      0      10     30     40     40
LAL.............1      1      1      1      1      1
Temp............35     41     50     55     58     57
RH..............64     58     45     37     33     37
20 ft wind......SE 10  SE 12  SE 15  SE 16  SE 16  SE 17
20 ft wind gust.20     23     25     25     25     26
Mix hgt (ft)....700    1500   2400   2800   2900   2600
Transport wind..SE 15  S 24   SE 31  SE 31  SE 30  SE 31
Haines index....5      5      5      5      4      4
SDspl kt-ft/10009      35     64     76     76     72

$$
Forecaster...Woody
Requested by...Joanie Lawrence
Type of request...PRESCRIBED
.TAG 2412265.1/DLH
.DELDT 04/25/24
.FormatterVersion 2.0.0
.EMAIL joan.lawrence@usda.gov