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000
FNUS73 KDLH 221215
FWSDLH

Spot Forecast for Walker Prairie Permanent Opening...USFS
National Weather Service Duluth MN
715 AM CDT Mon Apr 22 2024

Forecast is based on ignition time of 0700 CDT on April 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...

Partly sunny skies through high clouds early this morning will
increase and become mostly cloudy this afternoon. Mixing heights
at ignition time will be around 1800 ft, but increase to around
2800 ft this afternoon. Min RH around 42 percent early this
afternoon could drop as low as 40 percent before recovering mid to
late afternoon. This is due to scattered light rain showers (10-20 percent
chance) arriving this afternoon. Expect light southwest winds
early this morning to become breezy mid to late this morning
through early afternoon ahead of an approaching weak cold front.
20 ft wind gusts increase to 15 to 18 mph before weakening to 12
to 15 mph this afternoon and evening and light tonight. Smoke
dispersal starts out poor to fair early this morning before
improving to fair to good. Expect winds to shift to westerly
after 1600 this afternoon as the cold front moves through. Expect
a brief break in the rain showers this afternoon and evening
following the cold frontal passage. Winds shift to north-
northeast on Tuesday as an Alberta Clipper system moves into the
area.

Scattered rain showers (20 percent chance) will continue on
Tuesday, ending by Tuesday afternoon. North-northeast gusts reach
to 15-19 mph, with min RH dropping to 40 percent in the afternoon.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent).
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 58.
Min humidity........42 percent.
Wind (20 ft)........Southwest winds 8 to 10 mph.
Mixing height.......1800 ft AGL increasing to 2800 ft AGL in the
                    afternoon.
Transport winds.....Southwest 16 to 18 mph shifting to the west
                    around 15 mph late in the afternoon.
Smoke dispersal.....Poor to fair (7200-20800 knot-ft) increasing to
                    fair to good (28700-42300 knot-ft) late in the
                    morning, then decreasing to fair (20300
                    knot-ft) late in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Pcpn amount.........0.00 inches.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MC  MC  MC  MC  MC  MC  CDY MC  MC  MC  MC
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   10  10  10  10  10  10  10
LAL.............1   1   1   1   1   1   1   1   1   1   1
Temp............45  46  47  50  52  54  56  55  56  57  57
RH..............46  48  49  48  46  45  43  47  47  47  45
20 FT wind dir..SW  S   S   S   S   SW  SW  SW  SW  W   W
20 FT wind spd..8   9   10  10  10  9   9   9   9   9   8
20 FT wind gust.14  15  16  18  16  15  14  14  14  14  14
Mix hgt (kft)...0.5 0.6 0.8 1.3 1.8 2.6 2.8 2.1 2.4 1.6 1.6
Transp wind dir.S   S   SW  SW  SW  SW  SW  SW  W   W   W
Transp wind spd.16  16  18  18  18  18  17  16  17  15  15
Haines index....5   5   5   5   5   5   5   5   5   5   5
SDspl kt-ft/10007   8   13  21  30  42  42  29  36  21  20

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (50-60 percent). Slight chance of
                    rain showers overnight.
Chance of pcpn......20 percent.
LAL.................1.
Min temperature.....Around 38.
Max humidity........92 percent.
Wind (20 ft)........West winds 6 to 8 mph.
Mixing height.......1700 ft AGL.
Transport winds.....West 10 to 17 mph.
Smoke dispersal.....Poor to fair (4500-21500 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.......PCLDY  MCLEAR MCLEAR PCLDY  PCLDY  PCLDY
Weather cov.....                            S CHC  S CHC
Weather type....NONE   NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........
Chc of pcpn (%).10     10     10     10     20     20
LAL.............1      1      1      1      1      1
Temp............57     52     48     45     44     41
RH..............42     48     56     60     65     79
20 ft wind......W 8    W 7    W 6    W 6    W 6    W 6
20 ft wind gust.14     14     12     12     12     12
Mix hgt (ft)....1700   800    600    500    600    500
Transport wind..W 15   W 15   W 12   W 10   W 15   W 10
Haines index....5      5      5      5      4      4
SDspl kt-ft/100022     10     6      5      8      5

$$
Forecaster...Cory
Requested by...Michael Mackey
Type of request...PRESCRIBED
.TAG 2411633.0/DLH
.DELDT 04/22/24
.FormatterVersion 2.0.0
.EMAIL michael.mackey@usda.gov