561
FNUS73 KUNR 011637
FWSUNR

Spot Forecast for Springbrook Rx...Rapid City Fire Department
National Weather Service Rapid City SD
1037 AM MDT Wed May 1 2024

Forecast is based on ignition time of 1100 MDT on May 01.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Cool and unsettled weather will continue through Friday
with a daily chance of showers. The wind on Thursday morning will be relatively
light. Switching from northwest early to southeast later in the morning.
West-northwest winds will develop on Thursday afternoon with some gusts
up to 20 mph possible, especially if any showers are in the area. A few light
showers are possible on on Thursday afternoon, however the chance of wetting
rain will be low.

.REST OF TODAY...

Sky/weather.........Cloudy (90-100 percent). Isolated rain
                    showers late in the morning, then rain showers
                    likely and slight chance of thunderstorms in
                    the afternoon.
Max temperature.....Around 58.
Min humidity........Around 45 percent.
Wind (20 ft)........South winds 5 to 10 mph during the rest of this
                    morning, increasing to 10 to 15 mph with gusts
                    around 20 mph this afternoon. Gusty and erratic winds
                    possible near any thunderstorms in the afternoon.
CWR.................60 percent.
LAL.................1 until 1200, then 2.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......4700 to 5200 ft agl.
Transport winds.....South around 30 mph.
Smoke dispersal.....Excellent this afternoon.

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent). Chance of rain
                    showers and slight chance of thunderstorms in
                    the evening.
Min temperature.....Around 36.
Max humidity........Around 82 percent.
Wind (20 ft)........South winds 5 to 10 mph early in the evening, becoming
                    northeast 5 to 10 mph around 700 PM then around 1100 PM
                    winds becoming northwest 10 to 15 mph. Gusty and erratic
                    winds possible near any thunderstorms in the evening.
CWR.................Around 60 percent in the evening.
LAL.................2 until 2400, then 1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth. winds 10 to 20 mph with gusts to
                    around 24 mph.
Mixing height.......500 to 1000 ft agl.
Transport winds.....Northwest around 20 mph.
Smoke dispersal.....Poor.

.THURSDAY...

Sky/weather.........Partly sunny (50-60 percent). Chance of
                    light rain showers in the afternoon.
Max temperature.....Around 55.
Min humidity........Around 33 percent.
Wind (20 ft)........Northwest around 5 mph in the morning. Around
                    1100 AM becoming southeast around 5 mph. Around
                    200 PM west-northwest winds 10 to 15 mph with
                    gusts up to 20 mph, especially if any showers are
                    in the area.
CWR.................10 percent.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......11800 to 12300 ft agl.
Transport winds.....West 20 to 25 mph.
Smoke dispersal.....Excellent.

$$
Forecaster...GR
Requested by...Eric OConnor
Type of request...PRESCRIBED
.TAG 2412800.1/UNR
.DELDT 05/01/24
.FormatterVersion 2.0.0
.EMAIL eric.oconnor@rcgov.org