724
FNUS73 KUNR 231219
FWSUNR

Spot Forecast for Wakpamni Rx...Pine Ridge BIA
National Weather Service Rapid City SD
619 AM MDT Thu May 23 2024

Forecast is based on ignition time of 0800 MDT on May 23.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...A low pressure system will move through the region today
bringing gusty winds and chances for showers and thunderstorms this
evening and overnight. Winds this morning will initially be out of the south
and gradually strengthen through the morning and shift to the west
by around 11 am. These west winds will continue to strengthen
through the afternoon with sustained winds of 20 to 25 mph and gusts of up to
35 mph. There will be a chance for showers this afternoon with
increasing chances for thunderstorms by this evening. No severe weather
is expected over the forecast area at this time.

West winds this evening will shift to the northwest after midnight with
sustained winds of 20 to 25 mph and gusts up to 35 mph. Northwest winds
will continue through most of the day Friday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent). Chance of showers
                    in the afternoon.
Max temperature.....Around 72.
Min humidity........26 percent.
Wind (20 ft)........Southerly winds of 15 to 20 mph in the morning, gusting
up to 30 mph. Winds will shift to the west after 11 am
with winds of 20 to 25 mph and gusts to around 35
                    mph.
CWR.................20 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......6900 to 7400 ft agl.
Transport winds.....Southwest around 35 mph.
Smoke dispersal.....Excellent.

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (35-45 percent). Chance of rain
                    showers and slight chance of thunderstorms in
                    the evening, then slight chance of rain showers
                    overnight.
Min temperature.....Around 37.
Max humidity........85 percent.
Wind (20 ft)........West winds around 25 mph with gusts to around
                    36 mph. Gusty and erratic winds expected near
                    thunderstorms in the evening. Winds will shift to
the northwest after midnight with winds of 20 to 25
mph, gusting to 35.
CWR.................20 percent.
LAL.................2 until 2400, then 1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......1200 to 1700 ft agl.
Transport winds.....West 45 to 50 mph.
Smoke dispersal.....Fair.

.FRIDAY...

Sky/weather.........Mostly sunny (30-40 percent). Slight chance of
                    rain showers in the morning.
Max temperature.....Around 64.
Min humidity........31 percent.
Wind (20 ft)........Northwest winds 15 to 25 mph with gusts to
                    around 36 mph in the morning. Winds will weaken
slightly and shift to the west by the afternoon
with sustained winds of 15 to 20 mph, gusting to
25.
CWR.................0 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......6400 to 6900 ft agl.
Transport winds.....Northwest around 40 mph becoming west around 25
                    mph in the afternoon.
Smoke dispersal.....Very good.

$$
Forecaster...EW
Requested by...Craig Brown
Type of request...PRESCRIBED
.TAG 2414971.0/UNR
.DELDT 05/23/24
.FormatterVersion 2.0.0
.EMAIL Craig.brown@usda.gov