FNUS75 KSLC 121641
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1041 AM MDT THU AUG 12 2010

.DISCUSSION...AN AREA OF LOW PRESSURE WILL MOVE ACROSS NORTHERN
UTAH TODAY...BRINGING A WEAK COLD FRONT ACROSS THE NORTHERN HALF
OF UTAH THROUGH THIS AFTERNOON. THIS FRONT IS EXPECTED TO WEAKEN
PRIOR TO REACHING THE WILDFIRE LOCATION SHIFTING THE WINDS TO A
MORE WESTERLY DIRECTION THIS AFTERNOON. HIGH PRESSURE IS EXPECTED
TO BUILD INTO THE REGION TOMORROW BRINGING WEAKER WINDS TO THE
AREA.

THE BEAVER PORTABLE DEWPOINT/RH SENSOR HAS BEEN SIGNIFICANTLY
DIFFERENT THAN OTHER SENSORS IN THE AREA THIS MORNING. RH
FORECAST IS BASED ON SURROUNDING SENSORS.

.TODAY...
LAL...................1.
HAINES INDEX..........5 ..MODERATE.
CLEARING INDEX........1000+.
SKY/WEATHER...........SUNNY (0-10 PERCENT CLOUD COVER) UNTIL
                      NOON...THEN PARTLY CLOUDY (30-40 PERCENT
                      CLOUD COVER).
MAX TEMPERATURE.......80-82.
MIN HUMIDITY..........15-18 PERCENT.
WIND (20 FT)..........SOUTH WINDS 10 TO 20 MPH SHIFTING TO THE
                      SOUTHWEST TO WEST 10 TO 20 MPH DURING THE
                      MID AFTERNOON.

.TONIGHT...
LAL...................1.
HAINES INDEX..........5 ..MODERATE.
SKY/WEATHER...........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
MIN TEMPERATURE.......47-49.
MAX HUMIDITY..........39-41 PERCENT.
WIND (20 FT)..........WEST TO SOUTHWEST WINDS 10 TO 20 MPH DECREASING
                      TO 5 TO 15 MPH LATE IN THE EVENING.

.OUTLOOK FOR FRIDAY...
LAL...................1.
HAINES INDEX..........6 ..HIGH.
CLEARING INDEX........940.
SKY/WEATHER...........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
MAX TEMPERATURE.......80-82.
MIN HUMIDITY..........18-20 PERCENT.
WIND (20 FT)..........SOUTH TO SOUTHWEST WINDS 5 TO 10 MPH.



FORECASTER...KRUSE
REQUESTED BY...GLEN CHAPPELL
REASON FOR REQUEST...WILDFIRE
.TAG 20100812.TWITC.01/SLC

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