FNUS75 KSLC 190051
FWSSLC

SPOT FORECAST FOR UPPER SANTA CLARA VEG
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
551 PM MST WED JAN 18 2012

.DISCUSSION...A GENERALLY MILD WESTERLY FLOW WILL PREVAIL ACROSS
SOUTHWEST UTAH THROUGH THE REMAINDER OF THE WEEK...AS A SERIES
OF STORM SYSTEMS PASS BY TO THE NORTH OF THE AREA. SLIGHT WARMING
ALOFT MAY LIMIT VENTILATION SOMEWHAT THURSDAY...HOWEVER CLEARING
INDICES SILL APPEAR THEY WILL EXCEED 500 DURING THE AFTERNOON.
ONE OF THESE SYSTEMS EXPECTED TO CROSS NORTHERN UTAH THURSDAY
NIGHT WILL BRING AN INCREASE IN CLOUD COVER EARLY FRIDAY ALONG
WITH SOME COOLING ALOFT WHICH WILL AID MIXING DEPTHS A BIT AND
IMPROVE VENTILATION.

THE NEXT CHANCE FOR PRECIPITATION LOOKS TO COME SATURDAY AS THE
STORM TRACK SHIFTS SOUTH A BIT...ALLOWING A PACIFIC STORM SYSTEM
TO CROSS THE REGION. PRECIPITATION WITH THIS SYSTEM WOULD LIKELY
BE IN THE FORM OF RAIN...WITH A CHANCE OF A CHANGEOVER TO SNOW
LATE SATURDAY.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....27-30.
  MAX HUMIDITY........34-37 PERCENT.
  WINDS - 20-FOOT.....EAST/DOWNSLOPE 3-8 MPH.

.THURSDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......550.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....46-49.
  MIN HUMIDITY........17-20 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5-10 MPH.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  CLEARING INDEX......850.
  SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER)
                      THEN BECOMING PARTLY CLOUDY (55-65 PERCENT
                      CLOUD COVER).
  MAX TEMPERATURE.....45-48.
  MIN HUMIDITY........22-25 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5-10 MPH.



FORECASTER...SEAMAN
REQUESTED BY...JOE HARRIS
REASON FOR REQUEST...PRESCRIBED
.TAG 20120118.UPPER.02/SLC

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