585
FNUS73 KDLH 222159
FWSDLH

Spot Forecast for Horse River...USFS
National Weather Service Duluth MN
459 PM CDT Thu May 22 2025

Forecast is based on forecast start time of 1700 CDT on May 22.
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...

Relative humidity for today is right around the minimum of 22%,
creating near-critical fire weather conditions for the next hour.
Skies will become mostly cloudy tonight with cool temps and
potential frost. With temperatures dropping to or near freezing,
expect good RH recovery overnight to 90% or greater. Some moisture
aloft arrives tonight into tomorrow, with min RH tomorrow
afternoon forecast around 33%. Isolated showers will be possible
Friday afternoon, but no measurable precipitation is expected
beyond sprinkles at the surface. Expect lighter winds tomorrow
compared to today with wind direction being mainly from the
northeast. Terrain modification in the bog to the east of the
wildfire location may cause local wind direction to be more
easterly at times on Friday.

.REST OF TODAY...

Sky/weather.........Partly sunny (50-60 percent).
Chance of pcpn......10 percent.
Max temperature.....Around 62.
Min humidity........23 percent.
Wind (20 ft)........North winds around 9 mph.
Mixing height.......7800 ft AGL.
Transport winds.....North around 18 mph.
Smoke dispersal.....Excellent (125600 knot-ft).
Pcpn amount.........0.00 inches.

TIME (CDT)      5 PM
Sky cover.......MCLDY
Weather cov.....
Weather type....NONE
Tstm cov........
Chc of pcpn (%).10
Temp............58
RH..............32
20 FT wind......N 8G15
Mix hgt (ft)....7800
Transport wind..N 18
SDspl kt-ft/1000126

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (25-35 percent) then becoming
                    mostly cloudy (50-60 percent). Chance of
                    sprinkles in the evening. Areas of frost
                    overnight. Widespread frost overnight.
Chance of pcpn......10 percent.
Min temperature.....Around 33.
Max humidity........96 percent.
Wind (20 ft)........Northeast winds 5 to 9 mph in the evening
                    becoming light.
Mixing height.......6700 ft AGL decreasing to 1300 ft AGL.
Transport winds.....North 9 to 18 mph.
Smoke dispersal.....Excellent (81500-107100 knot-ft) decreasing to
                    poor to fair (7600-14200 knot-ft).
Pcpn amount.........0.00 inches.

TIME (CDT)      6 PM         10 PM        2 AM
Sky cover.......MCLDY        MCLEAR       PCLDY
Weather cov.....             CHANCE       WIDSPD
Weather type....NONE         RNSHWR       FROST
Tstm cov........
Chc of pcpn (%).10           10           0
Temp............57           41           33
RH..............34           57           82
20 FT wind......N 8G15       NE 5G7       N 3G5
Mix hgt (ft)....6700         1100         800
Transport wind..N 18         NE 13        N 10
SDspl kt-ft/1000107          12           8

.FRIDAY...

Sky/weather.........Partly sunny (55-65 percent). Widespread frost
                    early in the morning, then areas of frost early
                    in the morning. Chance of sprinkles in the
                    afternoon.
Chance of pcpn......10 percent.
Max temperature.....Around 62.
Min humidity........36 percent.
Wind (20 ft)........Light winds becoming north 5 to 6 mph in the
                    late morning and afternoon.
Mixing height.......2400 ft AGL increasing to 5500 ft AGL.
Transport winds.....North 8 to 13 mph.
Smoke dispersal.....Poor to fair (6700-26000 knot-ft) increasing to
                    fair to good (27600-44200 knot-ft) in the late
                    morning and afternoon.
Pcpn amount.........0.00 inches.

TIME (CDT)      6 AM         10 AM        2 PM
Sky cover.......MCLDY        MCLDY        MCLDY
Weather cov.....WIDSPD                    CHANCE
Weather type....FROST        NONE         RNSHWR
Tstm cov........
Chc of pcpn (%).0            0            10
Temp............33           45           56
RH..............96           63           40
20 FT wind......N 2G7        N 4G9        N 5G13
Mix hgt (ft)....800          3300         5300
Transport wind..N 9          N 12         N 9
SDspl kt-ft/10007            33           42

$$
Forecaster...Woody
Requested by...Jeb Backe
Type of request...WILDFIRE
.TAG 2514545.0/DLH
.DELDT 05/22/25
.FormatterVersion 2.0.0
.EMAIL jeb.backe@usda.gov