424
FNUS73 KUNR 182327
FWSUNR

Spot Forecast for Manderson Fire...BIA
National Weather Service Rapid City SD
527 PM MDT Wed Sep 18 2024

Forecast is based on forecast start time of 1800 MDT on September 18.
If conditions become unrepresentative, contact the National Weather
Service.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING...

.DISCUSSION...Red flag or near red flag conditions will continue until
around sunset before conditions slowly improve. Winds will decrease
some after sunset and into the overnight hours. Humidity recovery will
only be fair late tonight. Westerly winds will be breezy on Thursday,
with humidity not as low as today.

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Min temperature.....Around 53.
Max humidity........62-66 percent.
Wind (20 ft)........Southwest winds 15 to 25 mph with gusts to
                    around 35 mph early, gradually decreasing to 8 to
                    14 mph with gusts to around 20 mph overnight.
CWR.................0 percent.
LAL.................1.
Haines Index........6 or high potential for large plume dominated
                    fire growth.
Mixing height.......500 to 1000 ft agl.
Transport winds.....Southwest around 30 mph becoming west around 20
                    mph overnight.
Smoke dispersal.....Poor.

.THURSDAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 81.
Min humidity........21-25 percent.
Wind (20 ft)........West winds 10 to 20 mph with gusts to 30 mph,
                    decreasing to 8 to 15 mph late in the afternoon.
CWR.................0 percent.
LAL.................1.
Haines Index........6 or high potential for large plume dominated
                    fire growth.
Mixing height.......8200 to 8700 ft agl.
Transport winds.....West around 25 mph.
Smoke dispersal.....Excellent.

.THURSDAY NIGHT...

Sky/weather.........Clear (0-10 percent).
Min temperature.....Around 51.
Max humidity........68-73 percent.
Wind (20 ft)........Northwest 6 to 12 mph early in the evening
                    becoming southeast 5 to 10 mph overnight.
CWR.................0 percent.
LAL.................1.
Haines Index........6 or high potential for large plume dominated
                    fire growth.
Mixing height.......400 to 900 ft agl.
Transport winds.....Southeast around 15 mph.
Smoke dispersal.....Poor.

$$
Forecaster...ST
Requested by...Sean Whalen
Type of request...WILDFIRE
.TAG 2422690.0/UNR
.DELDT 09/18/24
.FormatterVersion 2.0.0
.EMAIL swhalen@blm.gov