839
FNUS73 KMPX 111746
FWSMPX

Spot Forecast for Angus Lake WPA Rx...USFWS
National Weather Service Twin Cities/Chanhassen MN
1246 PM CDT Sat May 11 2024

Forecast is based on ignition time of 0800 CDT on May 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

Humidity values are trending lower than previously forecast. Below
is the updated Spot Forecast for the Angus Rx burn.

For this afternoon, expect mostly sunny skies humidity values
dropping into the lower 20s percent this afternoon as temperatures
climb into the 70s. There is  a small chance that humidity values
could fall into the upper teens. Surface level winds are forecast
to be primarily out of the west at 5-10mph today. These light speeds
will also mean that the wind direction could vary north or south at
times from due west.

Please contact our office at 952-361-6671 if you have questions or
concerns with this forecast.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Temperature.........54 at ignition...Max 75.
RH..................57 percent at ignition...Min 21 percent.
Wind (20 ft)........Winds northwest at 3 mph at
                    ignition...otherwise Light winds becoming
                    northwest 6 to 9 mph late in the morning, then
                    shifting to the west around 9 mph late in the
                    afternoon.
Smoke dispersal.....Poor /3200 knot-ft/ at ignition.
                    Max...excellent /78000 knot-ft/.
Mixing height.......500 ft AGL at ignition...otherwise 7100 ft AGL.
Transport winds.....Northwest 8 to 13 mph shifting to the west 12
                    to 13 mph late in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 6.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
Sky cover.......CLR CLR CLR MCR MCR MCR MCR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Temp............54  57  61  64  68  70  71  73  74  75  75  74
RH..............57  49  41  37  33  30  25  22  21  21  21  22
20 FT wind dir..NW  N   NW  NW  NW   W  W   W   W   W   SW  SW
20 FT wind spd..3   0   2   6   6   7   8   9   9   9   8   8
20 FT wind gust.10  10  12  13  13  14  14  13  14  13  13  12
Mix hgt (kft)...0.5 1.2 2.2 3.4 5.1 6.4 6.8 6.9 6.8 7.1 6.4 1.8
Transp wind dir.N   NW  N   NW  NW  NW  NW  W   W   W   W   SW
Transp wind spd.8   9   10  12  13  13  12  12  12  13  14  9
Haines index....5   5   5   5   5   6   6   6   6   6   6   6

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (25-35 percent).
Temperature.........Min 56.
RH..................Max 64 percent.
Wind (20 ft)........Southwest winds 6 to 8 mph increasing to 7 to
                    10 mph in the late evening and overnight.
Smoke dispersal.....Excellent (77400 knot-ft) early in the evening
                    decreasing to poor (3400 knot-ft) late in the
                    night.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 8 to 14 mph shifting to the west 15
                    to 16 mph.
Haines Index........5 to 6 or moderate to high potential for large
                    plume dominated fire growth.

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
Temperature.........Max 83.
RH..................Min 27 percent.
Wind (20 ft)........Southwest winds 10 to 12 mph shifting to the
                    northwest 12 to 13 mph late in the afternoon.
Smoke dispersal.....Poor (5600 knot-ft) early in the morning
                    increasing to excellent (81700 knot-ft) in the
                    afternoon increasing to excellent (109900
                    knot-ft) late in the afternoon.
Mixing height.......7800 ft AGL.
Transport winds.....West 15 to 20 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

$$
Forecaster...Beitlich
Requested by...Blatz
Type of request...PRESCRIBED
.TAG 2413726.0/MPX
.DELDT 05/11/24
.FormatterVersion 2.0.0
.EMAIL david_blatz@fws.gov