765
FNUS73 KUNR 191201
FWSUNR

Spot Forecast for Power Dam Road Fire...BIA
National Weather Service Rapid City SD
601 AM MDT Thu Sep 19 2024

Forecast is based on forecast start time of 0700 MDT on September 19.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Elevated fire weather conditions are expected
through Saturday with the warmest and driest day Friday. Gusty
westerly winds return by 9am today, subsiding some tonight. Gusty
south winds develop Friday after 9am. Minimum relative humidities
today will be around 25 percent with 15-20 percent for Friday.

Looking ahead, a cold front moves through Friday night with cooler
weather for Saturday and especially Sunday. Precipitation chances look
to be low at this time.

.TODAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 83.
Min humidity........25 percent.
Wind (20 ft)........Becoming windy. Southwest winds 5-15 mph before 9am,
                    becoming west and increasing to 15-30 mph after 9am
                    with gusts around 40 mph in the afternoon.
CWR.................0 percent.
LAL.................1.
Haines Index........6 or high potential for large plume dominated
                    fire growth.
Mixing height.......7900 to 8400 ft agl.
Transport winds.....West around 40 mph.
Smoke dispersal.....Excellent.

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
Min temperature.....Around 53.
Max humidity........73 percent.
Wind (20 ft)........Northwest winds 5 to 15 mph shifting to the
                    southwest 5 to 10 mph overnight. Gusts up to 25
                    mph in the evening.
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.....Northwest around 15 mph shifting to the south
                    overnight.
Smoke dispersal.....Poor.

.FRIDAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 93.
Min humidity........15-20 percent.
Wind (20 ft)........Southwest winds 5-15 mph before 9am. After 9am
                    south winds 10 to 20 mph with gusts around 30 mph.
CWR.................0 percent.
LAL.................1.
Haines Index........6 or high potential for large plume dominated
                    fire growth.
Mixing height.......10200 to 10700 ft agl.
Transport winds.....South around 20 mph shifting to the southwest
                    around 30 mph in the afternoon.
Smoke dispersal.....Excellent.

$$
Forecaster...EH
Requested by...Bert Shields
Type of request...WILDFIRE
.TAG 2422392.7/UNR
.DELDT 09/19/24
.FormatterVersion 2.0.0
.EMAIL bert.shields@bia.gov