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000
FNUS73 KUNR 181531
FWSUNR

Spot Forecast for Porcupine/Wounded Knee District RX...SD-PRA
National Weather Service Rapid City SD
931 AM MDT Thu Apr 18 2024

Forecast is based on ignition time of 0900 MDT on April 18.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Northwest winds will increase this morning and gust
to 20 to 25 mph this afternoon as the relative humidity drops to around
22 percent. Fair relative humidity recovery is expected tonight
with chilly overnight lows. Cooler temperatures are expected
Friday will lighter winds.

.TODAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 47.
Min humidity........22 percent.
Wind (20 ft)........Northwest winds 10 to 18 mph. Gusts to
                    20 to 25 mph in the afternoon.
CWR.................0 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......8300 to 8800 ft agl.
Transport winds.....Northwest 20 to 25 mph.
Smoke dispersal.....Excellent.

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent) then becoming
                    mostly cloudy (65-75 percent).
Min temperature.....Around 23.
Max humidity........56 percent.
Wind (20 ft)........North winds 8 to 18 mph becoming west
                    4 to 9 mph overnight.
CWR.................0 percent.
LAL.................1.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......400 to 900 ft agl.
Transport winds.....North 10 to 15 mph.
Smoke dispersal.....Poor.

.FRIDAY...

Sky/weather.........Partly sunny (65-75 percent).
Max temperature.....Around 43.
Min humidity........30 percent.
Wind (20 ft)........West winds 4 to 9 mph becoming north 5 to 15 mph.
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.....North 15 to 20 mph.
Smoke dispersal.....Very good.

$$
Forecaster...EH
Requested by...RXB Bauer
Type of request...PRESCRIBED
.TAG 2411328.0/UNR
.DELDT 04/18/24
.FormatterVersion 2.0.0
.EMAIL Justin.bauer@bia.gov