FNUS75 KSLC 211037
FWSSLC

SPOT FORECAST FOR MUTTON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
437 AM MDT SAT AUG 21 2010

.DISCUSSION...A PACIFIC TROUGH AND ASSOCIATED COLD FRONT
WILL TRACK EAST INTO THE GREAT BASIN TODAY...WITH INCREASING
SOUTHWESTERLY FLOW ALOFT. NORMAL DAYTIME UPSLOPE WINDS FROM THE
SOUTHEAST ARE EXPECTED TO INCREASE AS RESULT WITH GUSTS EXPECTED
TO APPROACH 20 MPH LATER THIS AFTERNOON. MID LEVEL MOISTURE
EXPECTED TO INCREASE IN SOUTHWESTERLY FLOW ALOFT AS WELL...WITH
AN ISOLATED SHOWER OR THUNDERSTORM POSSIBLE STARTING LATE THIS
AFTERNOON AND CONTINUING THROUGH TONIGHT. DIURNAL DOWNSWING OF
WINDS STILL EXPECTED TONIGHT...WITH LIGHT NORTHWESTERLIES
DEVELOPING BY LATE THIS EVENING.

MOISTURE WILL INCREASE SIGNIFICANTLY FROM THE SOUTH ON SUNDAY.
SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED BY EARLY
AFTERNOON...WITH WETTING RAIN POTENTIAL INCREASING SIGNIFICANTLY
AS A RESULT. WINDS SHOULD REMAIN SIMILAR TO THOSE TODAY...WITH
ENHANCED UPSLOPE WINDS DEVELOPING BY MID MORNING AS THE COLD
FRONT WILL REMAIN WELL NORTHWEST OF THE SITE.

THE COLD FRONT IS EXPECTED TO REACH THE WILDFIRE SITE MONDAY
MORNING...BUT SHOULD BE WEAKENING ACROSS SOUTHERN UTAH.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN PARTLY CLOUDY (45-55
                      PERCENT CLOUD COVER). ISOLATED SHOWERS
                      AND THUNDERSTORMS AFTER NOON.
  MAX TEMPERATURE.....77-79.
  MIN HUMIDITY........30-35 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 10 MPH EARLY IN THE MORNING
                      BECOMING LIGHT AND VARIABLE...THEN BECOMING
                      SOUTHEAST 5 TO 10 MPH WITH GUSTS TO 20 MPH
                      IN THE AFTERNOON.

.TONIGHT...
  LAL.................2.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....54-56.
  MAX HUMIDITY........84-89 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 5 TO 15 MPH SWITCHING TO
                      NORTHWEST 4 TO 9 MPH AFTER 2100

.OUTLOOK FOR SUNDAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER)
                      THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT
                      CLOUD COVER). ISOLATED SHOWERS AND
                      THUNDERSTORMS IN THE MORNING...THEN
                      SCATTERED SHOWERS AND THUNDERSTORMS IN THE
                      AFTERNOON.
  MAX TEMPERATURE.....71-73.
  MIN HUMIDITY........55-57 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 10 TO 15 MPH.



FORECASTER...MERRILL
REQUESTED BY...TREVOR FRANDSEN
REASON FOR REQUEST...WILDFIRE
.TAG 20100820.MUTTO.01/SLC

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