FNUS75 KSLC 182142
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
342 PM MDT WED AUG 18 2010

.DISCUSSION...DEEP MOISTURE WILL REMAIN OVER THE AREA THROUGH
TONIGHT AND INTO THURSDAY. WETTING RAINS WILL ACCOMPANY MOST
STORMS THAT IMPACT THE FIRE THIS AFTERNOON. PRECIPITATION AMOUNTS
OF 0.20 TO 0.50 OF AN INCH ARE POSSIBLE. THE GENERAL WINDS ALOFT ARE FROM
THE SOUTHWEST AND WILL BECOME MORE WESTERLY THURSDAY IN THE WAKE
OF A TROUGH MOVING BY IN THE AFTERNOON. THIS WESTERLY FLOW WILL
BRING SOME DRYING TO THE REGION FOR LATE THURSDAY INTO FRIDAY.
WINDS WILL SHIFT TO SOUTHERLY AND MAY BECOME QUITE STRONG AHEAD OF
ANOTHER TROUGH ON SATURDAY. THESE WINDS MAY CONTINUE INTO SUNDAY
BUT WITH AN INCREASE OF MOISTURE CRITICAL FIRE CONDITIONS ARE LESS
LIKELY SUNDAY.


.REST OF TODAY...
LAL...................4.
HAINES INDEX..........3 ..VERY LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.......61-65 AT 8000 FT AND 56-59 AT 10000 FT.
MIN HUMIDITY..........REMAINING ABOVE 55 PERCENT REST OF TODAY AT
                      8000 FT AND 60-65 PERCENT AT 10000 FT.
WIND (20 FT)..........SOUTHEAST WINDS 10-15 MPH WITH GUSTS TO 25 MPH
                      AT 8000 FT AND SOUTHEAST AT 15-20 MPH WITH
                      GUSTS OVER 30 MPH AT 10000 FT.

.TONIGHT...
LAL...................4.
HAINES INDEX..........3 ..VERY LOW.
SKY/WEATHER...........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER).
                      SCATTERED SHOWERS AND THUNDERSTORMS THROUGH
                      EVENING THEN BECOMING ISOLATED AFTER 2400.
MIN TEMPERATURE.......53-56 AT 8000 FT AND 49-54 AT 10000 FT.
MAX HUMIDITY..........88-96 PERCENT AT ALL ELEVATIONS.
WIND (20 FT)..........SOUTHEAST WINDS 10-15 MPH BECOMING 5 TO 10 MPH
                      IN THE LATE EVENING AT 8000 FT. SOUTH AT 15-20
                      MPH IN THE EVENING AND SOUTHWEST AT 10 MPH
                      LATE.

.OUTLOOK FOR THURSDAY...
LAL...................4.
HAINES INDEX..........3 ..VERY LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.......80 AT 8000 FT AND 70-73 AT 10000 FT.
MIN HUMIDITY..........33-35 PERCENT AT 8000 FT AND 38-42 PERCENT
                      AT 10000 FT.
WIND (20 FT)..........SOUTH TO SOUTHWEST WINDS 10 MPH AT 8000 FT
                      AND SOUTHWEST 15-20 MPH AT 10000 FT..



FORECASTER...STRUTHWOLF
REQUESTED BY...GSORENSON
REASON FOR REQUEST...WILDFIRE
.TAG 20100818.TWITC.01/SLC

$$