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FNUS73 KUNR 021202

FWSUNR



Spot Forecast for Springbrook Rx...Rapid City Fire

National Weather Service Rapid City SD

602 AM MDT Thu May 2 2024



Forecast is based on ignition time of 0600 MDT on May 02. 

If conditions become unrepresentative, contact the National Weather

Service.



.DISCUSSION...Clouds will decrease this morning, but chances of 

showers and isolated thunderstorms increase this afternoon. 

Northwest winds will be breezy today, becoming 15 to 20 mph with

gusts of 25 to 30 mph by late morning. Winds and showers/storms

will diminish this evening. Chances for showers return early

Friday morning.



.TODAY...



Sky/weather.........Mostly sunny (35-45 percent). Chance of rain 

                    showers and slight chance of thunderstorms in 

                    the afternoon. 

Max temperature.....Around 57. 

Min humidity........22 percent. 

Wind (20 ft)........Northwest winds 10 to 15 mph early this morning,

                    increasing to 15 to 20 mph with gusts around 28 

                    mph late this morning. Gusty and erratic winds 

                    expected near thunderstorms in the afternoon. 

CWR.................20 percent. 

LAL.................1 until 1200, then 2. 

Haines Index........5 or moderate potential for large plume 

                    dominated fire growth. 

Mixing height.......15800 to 16300 ft agl. 

Transport winds.....West 25 to 30 mph. 

Smoke dispersal.....Excellent. 



.TONIGHT...



Sky/weather.........Mostly clear (15-25 percent). 

Min temperature.....Around 33. 

Max humidity........64 percent. 

Wind (20 ft)........Northwest winds 10 to 15 mph. Gusts up to 20 

                    mph early in the evening. 

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.....Northwest 10 to 15 mph. 

Smoke dispersal.....Poor. 



.FRIDAY...



Sky/weather.........Mostly cloudy (70-80 percent). Chance of rain 

                    showers. 

Max temperature.....Around 51. 

Min humidity........44 percent. 

Wind (20 ft)........North-northwest winds around 10 mph.

CWR.................30 percent. 

LAL.................1. 

Haines Index........3 or very low potential for large plume 

                    dominated fire growth. 

Mixing height.......5400 to 5900 ft agl. 

Transport winds.....Northwest around 15 mph. 

Smoke dispersal.....Good. 



$$

Forecaster...KP

Requested by...William Cina

Type of request...PRESCRIBED

.TAG 2413010.0/UNR

.DELDT 05/02/24

.FormatterVersion 2.0.0

.EMAIL cinabill@gmail.com