448
FNUS73 KUNR 190143
FWSUNR

Spot Forecast for Mystery Fire...BIA -Cheyenne River
National Weather Service Rapid City SD
743 PM MDT Wed Sep 18 2024

Forecast is based on forecast start time of 2000 MDT on September 18.
If conditions become unrepresentative, contact the National Weather
Service.

...WIND ADVISORY IN EFFECT UNTIL 3 PM MDT THURSDAY...

.DISCUSSION...Conditions will slowly improve across the area this
evening and overnight. Winds will decrease a bit overnight, but remain
breezy at times. Humidity recovery will only be fair late tonight.
West-northwest winds will increase again Thursday morning, with windy
conditions persisting through much of the day, starting to decrease
late in the afternoon. Minimum relative humidity in the afternoon will
not be as low as today.

.REST OF TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Min temperature.....Around 59.
Max humidity........63-67 percent.
Wind (20 ft)........West-northwest winds 10 to 18 mph with gusts to
                    around 25 mph.
CWR.................0 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......500 to 1000 ft agl.
Transport winds.....West 25 to 30 mph.
Smoke dispersal.....Poor.

.THURSDAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 78.
Min humidity........28-32 percent.
Wind (20 ft)........Windy. West-northwest winds 20 to 30 mph with
                    gusts to around 40 mph. Winds will decrease to
                    15 to 25 mph with gusts to 35 mph late in the
                    afternoon.
CWR.................0 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......7100 to 7600 ft agl.
Transport winds.....West around 40 mph.
Smoke dispersal.....Excellent.

$$
Forecaster...ST
Requested by...Richard LeBeau
Type of request...WILDFIRE
.TAG 2422697.0/UNR
.DELDT 09/18/24
.FormatterVersion 2.0.0
.EMAIL richard.lebeau@bia.gov,Anthony.kennedy@bia.gov,julian.redbuffalo@bia.gov