Suppression Forecast
Issued by NWS Rapid City, SD

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000
FNUS73 KUNR 192354
FWSUNR

SPOT FORECAST FOR S  SUMMIT RX...WY-HPD-BLM
NATIONAL WEATHER SERVICE RAPID CITY SD
554 PM MDT SAT APR 19 2014

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
DRY WEATHER IS EXPECTED THROUGH MONDAY. A WEAK COLD FRONT
WILL SLIDE THROUGH THE AREA SUNDAY AFTERNOON...WITH SOUTHWEST
WINDS SHIFTING TO THE NORTHWEST. WINDS WILL BECOME LIGHT
AND VARIABLE SUNDAY NIGHT AS HIGH PRESSURE BUILDS ACROSS
THE BLACK HILLS REGION. LIGHT WINDS WILL CONTINUE ON MONDAY.

A STRONG AREA OF LOW PRESSURE WILL DEVELOP ACROSS SOUTHEAST
MONTANA LATE TUESDAY. AS A RESULT...GUSTY SOUTH WINDS WILL
DEVELOP. RIDGETOP WINDS AROUND 20 MPH ARE LIKELY TUESDAY
AFTERNOON AND EVENING. MINIMUM RELATIVE HUMIDITY TUESDAY
AFTERNOON IS EXPECTED TO DROP TO AROUND 25 PERCENT WITH A HIGH
TEMPERATURE IN THE LOWER 70S. ISOLATED THUNDERSTORMS ARE
POSSIBLE TUESDAY AFTERNOON AND EVENING WITH ERRATIC WINDS.
GUSTY SOUTH TO SOUTHWEST WINDS WILL CONTINUE THROUGH TUESDAY
NIGHT AT RIDGETOP LEVEL...WITH MAXIMUM RELATIVE HUMIDITY AROUND
70 PERCENT. A COLD FRONT WILL MOVE THROUGH THE AREA EARLY
WEDNESDAY...WITH GUSTY WEST WINDS.

.SUNDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....66-68.
MIN HUMIDITY........26-28 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE
                    NORTHWEST AROUND 15 MPH BY LATE MORNING.
CWR.................0 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6000 TO 6500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH.

.SUNDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 33-35.
MAX HUMIDITY........AROUND 65 PERCENT.
WIND (20 FT)........NORTH WINDS 6 TO 12 MPH BECOMING LIGHT AND
                    VARIABLE.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 15 MPH.

.MONDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 55-58.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS BECOMING
                    WEST 5 TO 10 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6000 TO 6500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 10 MPH.

$$
FORECASTER...NWS
REQUESTED BY...ERIC CHAPMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20140420.SSUMM.01/UNR






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