FNUS75 KSLC 130027
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
627 PM MDT THU AUG 12 2010

.DISCUSSION...RIDGE OF HIGH PRESSURE WILL PREVAIL OVER THE REGION
THROUGH THIS WEEKEND. THE TRANSPORT WINDS WILL GENERALLY BE
SOUTHWEST TO WEST THROUGH THIS PERIOD AT 10 TO 20 MPH BUT SURFACE
WINDS WILL BE GREATLY INFLUENCED BY THE TERRAIN WITH DOWNSLOPE
DOMINATING AFTER 2100 UNTIL 0900 AND UPSLOPE BETWEEN 0900 AND 1300.
BETWEEN 1300 AND 2100 WINDS WILL BECOME MORE WEST NORTHWEST AT 5
TO 10 MPH WITH GUSTS 15-20 MPH. VERY POOR RH RECOVERY TONIGHT AND
FRIDAY NIGHT.

.TONIGHT...
LAL...................1.
HAINES INDEX..........4 ..LOW.
SKY/WEATHER...........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
MIN TEMPERATURE.......50.
MAX HUMIDITY.........17-20 PERCENT.
WIND (20 FT).........NORTHWEST 5-10 MPH THIS EVENING THEN BECOMING
                     DOWNSLOPE AT UNDER 5 MPH.

.FRIDAY...
LAL...................1.
HAINES INDEX..........5 ..MODERATE.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
MAX TEMPERATURE.......80.
MIN HUMIDITY..........8-11 PERCENT.
WIND (20 FT)..........DOWNSLOPE WINDS 5 MPH SHIFTING TO THE SOUTHEAST
                      LATE IN THE MORNING...THEN SHIFTING TO THE
                      WEST 5-10 MPH IN THE AFTERNOON WITH GUSTS 15 TO
                      20 MPH.

.OUTLOOK FOR SATURDAY...
LAL...................1.
HAINES INDEX..........6 ..HIGH.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER).
MAX TEMPERATURE.......80-82.
MIN HUMIDITY..........9-11 PERCENT.
WIND (20 FT)..........DOWNSLOPE WINDS 5 MPH BECOMING WEST AT 5 TO 10
                      MPH IN THE AFTERNOON.



FORECASTER...STRUTHWOLF
REQUESTED BY...GLEN CHAPPELL
REASON FOR REQUEST...WILDFIRE
.TAG 20100812.TWITC.02/SLC

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