871
FNUS73 KMPX 091333
FWSMPX

Spot Forecast for Lower Sioux Prairie Rx Burns 2024...Bureau of Indian Affairs
National Weather Service Twin Cities/Chanhassen MN
833 AM CDT Thu May 9 2024

Forecast is based on ignition time of 1400 CDT on May 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

Please contact our office if you have questions or concerns with
this forecast.

.DISCUSSION...Mostly sunny skies are expected throughout the day
today with no precipitation expected. Winds will come from the
northeast at 10-15 mph, gusting to 15-20 mph, with RH values bottoming
out around 35 percent.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
Temperature.........66 at ignition...Max 67.
RH..................48 percent at ignition...Min 37 percent.
Wind (20 ft)........Winds northeast at 13 mph at
                    ignition...otherwise Northeast winds 12 to 13
                    mph.
Smoke dispersal.....Excellent /102300 knot-ft/ at ignition.
                    Max...excellent /110600 knot-ft/.
Mixing height.......6000 ft AGL at ignition...otherwise 6900 ft
                    AGL.
Transport winds.....North 16 to 20 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (CDT)      2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM
Sky cover.......PC  PC  PC  PC  PC  PC  PC  PC  MCR PC  MCR PC
Weather cov.....
Weather type....
Tstm cov........
Temp............66  66  66  67  65  64  61  58  55  53  52  50
RH..............48  43  40  37  41  43  48  55  61  66  66  71
20 FT wind dir..NE  NE  N   N   N   N   NE  NE  E   SE  SE  S
20 FT wind spd..13  12  13  12  10  8   7   5   5   3   5   5
20 FT wind gust.20  18  18  18  17  16  13  10  9   9   9   8
Mix hgt (kft)...6.0 6.9 6.5 5.3 3.5 3.5 0.5 0.5 0.4 0.4 0.4 0.4
Transp wind dir.NE  N   N   N   N   N   NE  E   E   E   SE  S
Transp wind spd.20  18  17  16  16  14  9   8   7   7   6   7
Haines index....4   4   4   4   4   4   4   4   4   4   4   4

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
Temperature.........Min 45.
RH..................Max 86 percent.
Wind (20 ft)........Northeast winds 5 to 10 mph shifting to the
                    east late in the evening, then becoming light
                    late in the evening becoming south around 5 mph
                    overnight shifting to the southwest 5 to 6 mph.
Smoke dispersal.....Good (48500 knot-ft) early in the evening
                    decreasing to poor (1900 knot-ft) late in the
                    night.
Mixing height.......400 ft AGL.
Transport winds.....North 9 to 16 mph shifting to the east 7 to 8
                    mph late in the evening, then shifting to the
                    south 6 to 8 mph overnight shifting to the
                    southwest around 8 mph after 3 am.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.FRIDAY...

Sky/weather.........Mostly sunny (25-35 percent). Isolated rain
                    showers in the afternoon.
Temperature.........Max 72.
RH..................Min 33 percent.
Wind (20 ft)........Southwest winds 6 to 7 mph shifting to the
                    northwest 8 to 16 mph late in the morning, then
                    increasing to 18 to 20 mph in the afternoon.
Smoke dispersal.....Poor (2500 knot-ft) early in the morning
                    increasing to good (49200 knot-ft) in the
                    afternoon increasing to excellent (150900
                    knot-ft).
Mixing height.......8500 ft AGL.
Transport winds.....West 8 to 15 mph increasing to northwest 25 to
                    31 mph.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

$$
Forecaster...Calderone
Requested by...Martin Cassellius
Type of request...PRESCRIBED
.TAG 2413603.0/MPX
.DELDT 05/09/24
.FormatterVersion 2.0.0
.EMAIL martin.cassellius@bia.gov