220
FNUS73 KUNR 301522
FWSUNR

Spot Forecast for Springbrook Rx...Rapid City Fire Department
National Weather Service Rapid City SD
922 AM MDT Tue Apr 30 2024

Forecast is based on ignition time of 1000 MDT on April 30.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Northwest winds are expected through the day today.
An isolated very light rain shower is possible this morning. There
a better chance of showers, and possibly a thunderstorm, on Wednesday
afternoon.

.REST OF TODAY...

Sky/weather.........Mostly cloudy this morning (55-65 percent), partly
                    sunny this afternoon (45-55 percent). An isolated
                    very light rain shower possible this morning.
Max temperature.....Around 59.
Min humidity........Around 23 percent.
Wind (20 ft)........Northwest winds 10 to 15 mph. Gusts as high as 25 mph.
CWR.................5 percent.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......9700 to 10200 ft agl.
Transport winds.....Northwest around 30 mph.
Smoke dispersal.....Excellent.

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Min temperature.....Around 36.
Max humidity........Around 50 percent.
Wind (20 ft)........Northwest winds 10 to 20 mph with gusts to
                    around 25 mph early in the evening shifting
                    to the southwest 5 to 10 mph overnight.
CWR.................0 percent.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......400 to 900 ft agl.
Transport winds.....Northwest around 15 mph shifting to the
                    southwest around 10 mph overnight.
Smoke dispersal.....Poor.

.WEDNESDAY...

Sky/weather.........Mostly sunny (35-45 percent) then becoming
                    mostly cloudy (65-75 percent). Chance of rain
                    showers and slight chance of thunderstorms in
                    the afternoon.
Max temperature.....Around 60.
Min humidity........Around 37 percent.
Wind (20 ft)........South winds 10 to 15 mph. Gusts up to 20 mph.
                    Gusty and erratic winds possible near any
                    thunderstorms in the afternoon.
CWR.................20 percent.
LAL.................1 until 1200, then 2.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......6400 to 6900 ft agl.
Transport winds.....South around 20 mph increasing to west around
                    30 mph in the afternoon.
Smoke dispersal.....Excellent.

$$
Forecaster...GR
Requested by...Eric OConnor
Type of request...PRESCRIBED
.TAG 2412800.0/UNR
.DELDT 04/30/24
.FormatterVersion 2.0.0
.EMAIL eric.oconnor@rcgov.org