590
FNUS73 KMPX 271323
FWSMPX

Spot Forecast for Lower Sioux Pile Rx 2025...Bureau of irs Affa
National Weather Service Twin Cities/Chanhassen MN
823 AM CDT Wed Aug 27 2025

Forecast is based on ignition time of 0900 CDT on August 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

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

.DISCUSSION...

A few isolated showers are possible this morning just south of the
burn site although greater confidence for rainfall exists for
showers and potentially a isolated thunderstorm this afternoon
mainly after 3 PM. Partly cloudy skies today with southerly winds
remaining near 5kts becoming SE after 5 PM. RH at ignition time
will be near 90% then falling to the lower 70 to upper 60 percents
early this afternoon.

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent). Slight chance of
                    showers and thunderstorms late in the
                    afternoon. Chance of showers and thunderstorms
                    late in the afternoon.
Temperature.........62 at ignition...Max 78.
RH..................90 percent at ignition...Min 67 percent.
Wind (20 ft)........Winds south at 6 mph at ignition...otherwise
                    South winds 5 to 6 mph in the late morning and
                    early afternoon becoming light. Gusty and
                    erratic winds expected near thunderstorms late
                    in the afternoon.
Smoke dispersal.....Poor /11800 knot-ft/ at ignition. Max...fair
                    /26000 knot-ft/.
Mixing height.......1200 ft AGL at ignition...otherwise 3300 ft
                    AGL.
Transport winds.....South 6 to 12 mph.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
Sky cover.......PC  PC  PC  PC  PC  PC  PC  MC  PC  PC  PC  PC
Weather cov.....                        SCH SCH CHC CHC SCH SCH
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH CHC CHC SCH SCH
Temp............62  67  69  72  73  75  76  77  76  76  74  71
RH..............90  81  81  73  73  71  69  67  71  71  76  84
20 FT wind dir..S   S   S   S   S   S   S   S   SE  SE  SE  SE
20 FT wind spd..6   6   6   6   6   6   5   3   3   3   2   2
20 FT wind gust.12  12  12  13  12  12  12  9   8   8   7   6
Mix hgt (kft)...1.2 1.5 1.8 2.4 2.8 2.9 3.3 3.2 2.5 1.4 0.7 0.6
Transp wind dir.S   S   S   S   S   S   S   S   SE  SE  SE  E
Transp wind spd.12  10  10  10  10  9   9   8   6   6   6   5

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent). Chance of
                    showers and thunderstorms early in the evening,
                    then slight chance of showers and thunderstorms
                    early in the evening.
Temperature.........Min 57.
RH..................Max 100 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms early in the evening.
Smoke dispersal.....Poor (2300 knot-ft).
Mixing height.......600 ft AGL.
Transport winds.....Southeast 5 to 7 mph shifting to the west
                    around 6 mph overnight, then shifting to the
                    northwest 3 to 5 mph overnight shifting to the
                    north around 6 mph early in the morning.

.THURSDAY...

Sky/weather.........Sunny (20-30 percent).
Temperature.........Max 78.
RH..................Min 66 percent.
Wind (20 ft)........Light winds becoming east 5 to 6 mph in the
                    late morning and afternoon.
Smoke dispersal.....Poor (3500 knot-ft) early in the morning
                    increasing to fair (29200 knot-ft) in the
                    afternoon.
Mixing height.......3600 ft AGL.
Transport winds.....Northeast 7 to 9 mph shifting to the east 8 to
                    9 mph in the late morning and afternoon.

$$
Forecaster...Dunleavy
Requested by...Martin Cassellius
Type of request...PRESCRIBED
.TAG 2520814.0/MPX
.DELDT 08/27/25
.FormatterVersion 2.0.0
.EMAIL martin.cassellius@bia.gov