FNUS75 KSLC 061250
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
650 AM MDT FRI AUG 6 2010

.DISCUSSION...AS A TROUGH OF LOW PRESSURE SLOWLY APPROACHES THE
REGION...THE AIRMASS IS BEGINNING TO DRY AND SOUTHERLY WINDS WILL
INCREASE. THIS TREND IS FORECAST TO CONTINUE THROUGH MUCH OF THE
WEEKEND. ANY THUNDERSTORMS THAT DO DEVELOP WILL BE CAPABLE OF
PRODUCE GUSTY ERRATIC WINDS.

.TODAY...
LAL...................2.
HAINES INDEX..........5 ..MODERATE.
CLEARING INDEX........1000+.
SKY/WEATHER...........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.......76-78.
MIN HUMIDITY..........26-28 PERCENT.
WIND (20 FT)..........DOWNSLOPE 4 TO 8 MPH EARLY THIS
                      MORNING...BECOMING UPSLOPE 8 TO 14 MPH DURING
                      THE LATE MORNING. RIDGETOP WINDS INCREASING TO
                      SOUTHWEST 15 TO 25 THIS AFTERNOON.

.TONIGHT...
LAL...................2 UNTIL MIDNIGHT...THEN 1.
HAINES INDEX..........5 ..MODERATE.
SKY/WEATHER...........MOSTLY CLEAR (20-30 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      UNTIL MIDNIGHT.
MIN TEMPERATURE.......54-56.
MAX HUMIDITY..........59-61 PERCENT.
WIND (20 FT)..........UPSLOPE 6 TO 10 MPH...BECOMING DOWNSLOPE
                      BY LATE EVENING. RIDGETOP WINDS SOUTHWEST
                      15 TO 25 MPH.

.OUTLOOK FOR SATURDAY...
LAL...................1 UNTIL NOON...THEN 3.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER) THEN
                      BECOMING PARTLY CLOUDY (35-45 PERCENT CLOUD
                      COVER). A CHANCE OF SHOWERS AND THUNDERSTORMS
                      IN THE AFTERNOON.
MAX TEMPERATURE.......76-78.
MIN HUMIDITY..........27-29 PERCENT.
WIND (20 FT)..........DOWNSLOPE 4 TO 8 MPH EARLY IN THE
                      MORNING...BECOMING UPSLOPE 8 TO 14 MPH DURING
                      THE LATE MORNING. RIDGETOP WINDS SOUTHWEST
                      15 TO 25 MPH.



FORECASTER...ROGOWSKI
REQUESTED BY...BEAVER RANGER DISTRICT
REASON FOR REQUEST...WILDFIRE
.TAG 20100806.TWITC.01/SLC

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