FNUS75 KSLC 101341
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
741 AM MDT TUE AUG 10 2010

.DISCUSSION...A GENERAL DRY SOUTHWESTERLY FLOW ALOFT WILL PREVAIL
TODAY...ALTHOUGH THERE HAS BEEN A THIN LAYER OF MOISTURE THAT HAS
MOVED NORTH FROM ARIZONA AT BETWEEN 12000 AND 13000 FEET MSL. THIS
LAYER IS SO THIN THAT ONLY FAIR WEATHER CUMULUS IS EXPECTED TO
DEVELOP. WINDS WILL PICK UP THIS AFTERNOON AS WINDS ALOFT INCREASE
TO 15-20 KTS AND MIX DOWN TO THE SURFACE. ALTHOUGH THE FIRE ZONE
THAT THE TWITCHELL CANYON FIRE IS LOCATED DOES NOT HAVE A RED
FLAG WARNING THE FIRE ZONE JUST TO YOUR WEST...FROM I-15 WESTWARD
...HAS A RED FLAG WARNING FOR LOW RH AND GUSTY WINDS FROM NOON TODAY
UNTIL 10 PM TONIGHT AND A FIRE WEATHER WATCH FOR WEDNESDAY.

.TODAY...
LAL...................1.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
MAX TEMPERATURE.......80.
MIN HUMIDITY..........14-17 PERCENT.
WIND (20 FT)..........SOUTHEAST 2-5 MPH THIS MORNING BECOMING
                      SOUTHWEST AT 10 TO 15 MPH THIS AFTERNOON WITH
                      GUSTS UP TO 25 MPH.

.TONIGHT...
LAL...................1.
HAINES INDEX..........3 ..VERY LOW.
SKY/WEATHER...........MOSTLY CLEAR (10-20 PERCENT CLOUD COVER).
MIN TEMPERATURE.......52-54.
MAX HUMIDITY..........27-31 PERCENT.
WIND (20 FT)..........SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 25
                      MPH EARLY IN THE EVENING.

.OUTLOOK FOR WEDNESDAY...
LAL...................1 UNTIL NOON...THEN 2.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER) THEN
                      BECOMING PARTLY CLOUDY (35-45 PERCENT CLOUD
                      COVER). A SLIGHT CHANCE OF SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.......80.
MIN HUMIDITY..........17-20 PERCENT.
WIND (20 FT)..........BREEZY. SOUTHWEST WINDS 15 TO 20 MPH WITH
                      GUSTS TO AROUND 30 MPH BY EARLY AFTERNOON.



FORECASTER...STRUTHWOLF
REQUESTED BY...CLAY MATHESON
REASON FOR REQUEST...WILDFIRE
.TAG 20100810.TWITC.01/SLC

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