Suppression Forecast
Issued by NWS Duluth, MN

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000
FNUS73 KDLH 221222 AAA
FWSDLH

Spot Forecast for Boy River RX...UPDATED
National Weather Service Duluth MN
722 AM CDT Sun Apr 22 2018

Forecast is based on ignition time of 0800 CDT on April 22.
If there are questions or concerns with this forecast...
please call the National Weather Service.

.DISCUSSION...

UPDATED to lower RH forecast this afternoon. Minimum RH between
20% and 25% is expected. No other changes made with this update.

Sunny to mostly sunny skies are expected at the burn site through
today with high cirrus moving overhead this afternoon. Winds will
be from the south to southwest with wind speeds 8 to 13 mph this
afternoon. Frequent wind gusts around 15 mph are expected, with
occasional gusts to 20 mph possible. Wind gusts will subside
around 7 PM and wind speeds will decrease through the evening. A
very weak cool front will move over the burn site late tonight or
early Monday. The passage of the front will not increase wind
speeds or change temperatures, but may shift winds from the west-
southwest. Mostly sunny and warm conditions expected Monday with
lower wind speeds of 5 to 10 mph.

.TODAY...

Sky/weather.........Sunny.
Max temperature.....Around 61.
Min humidity........24 percent.
Wind (20 ft)........Light winds becoming southeast around 5 mph
                    early in the morning, then increasing to
                    southwest with gusts to around 17 mph in the
                    late morning and afternoon.
Mixing height.......2100 ft AGL increasing to 6200 ft AGL.
Transport winds.....Southwest 5 to 20 mph.
Smoke dispersal.....Poor (9800 knot-ft) increasing to excellent
                    (113900 knot-ft).

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Temp............28  32  41  50  54  56  57  59  60  61  61
RH..............92  75  62  51  41  35  31  28  25  24  25
20 FT wind dir..SE  SE  S   S   S   S   S   S   S   SW  SW
20 FT wind spd..0   5   5   10  10  10  10  10  10  10  10
20 FT wind gust.3   6   9   12  15  17  19  19  19  19  17
Mix hgt (kft)...0.3 1.2 2.1 3.0 3.7 4.5 5.4 5.6 5.9 6.2 6.2
Transp wind dir.S   S   S   SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.5   10  15  15  20  20  20  20  20  20  20
SDspl kt-ft/10001   10  24  44  60  76  91  98  104 111 114

.TONIGHT...

Sky/weather.........Mostly clear.
Min temperature.....Around 39.
Max humidity........82-85 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph.
Mixing height.......6200 ft AGL decreasing to 2200 ft AGL.
Transport winds.....Southwest 15 to 20 mph.
Smoke dispersal.....Excellent (115600 knot-ft) decreasing to poor
                    (3400 knot-ft).

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR PCLDY
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............60     55     48     44     42     41
RH..............28     40     55     66     72     77
20 ft wind......SW 10  SW 10  S 10   S 5    SW 5   SW 5
20 ft wind gust.15     12            9      9      9
Mix hgt (ft)....6200   4200   300    300    300    300
Transport wind..SW 20  SW 20  S 15   S 15   SW 15  SW 15
SDspl kt-ft/1000116    71     3      3      3      3

.MONDAY...

Sky/weather.........Mostly sunny.
Max temperature.....Around 65.
Min humidity........27-29 percent.
Wind (20 ft)........West winds around 5 mph.
Mixing height.......1400 ft AGL increasing to 7900 ft AGL.
Transport winds.....West 10 to 15 mph.
Smoke dispersal.....Poor to fair (2900-17200 knot-ft) increasing to
                    good to excellent (56200-66400 knot-ft).

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......PCLDY  PCLDY  PCLDY  PCLDY  PCLDY  PCLDY
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............39     43     51     57     62     65
RH..............84     74     52     41     34     28
20 ft wind......SW 5   SW 5   SW 5   SW 5   SW 5   W 5
20 ft wind gust.8      8      9      8      8      8
Mix hgt (ft)....300    600    1400   4500   6600   7900
Transport wind..SW 15  SW 15  SW 15  SW 10  W 10   W 10
SDspl kt-ft/10003      8      17     43     56     66

$$
Forecaster...Kevin
Requested by...Michael Mackey
Type of request...PRESCRIBED
.TAG 1807312.0/DLH
.EMAIL mmackey@fs.fed.us


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