FNUS75 KSLC 201619
FWSSLC

SPOT FORECAST FOR DUCK CREEK PILES
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
919 AM MST TUE JAN 20 2009

.DISCUSSION...HIGH PRESSURE WILL CONTINUE OVER THE REGION FOR
THE NEXT COUPLE DAYS. THIS VERY STABLE AIRMASS WILL CREATE POOR
MIXING AND GENERALLY LIGHT TRANSPORT WINDS. THE HIGH PRESSURE
WILL GRADUALLY SHIFT TO THE EAST ON WEDNESDAY AND
THURSDAY...LEADING TO AN INCREASE IN CLOUDS AND SOUTHERLY
TRANSPORT WINDS...BUT MIXING WILL STILL BE POOR AND CLEARING
INDICES ARE LIKELY TO STAY BELOW 500 FOR THESE DAYS. THE BEST
CHANCE FOR CLEARING INDICES AT OR ABOVE 500 IS FRIDAY...WHEN A
LOW PRESSURE SYSTEM MOVES THROUGH THE AREA...BRINGING A CHANCE OF
PRECIPITATION TO MUCH OF THE STATE.

.TODAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......230.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....56-60.
  MIN HUMIDITY........15-19 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 5 MPH...BECOMING
                      UPSLOPE/UPVALLEY 3 TO 6 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....28-32.
  MAX HUMIDITY........41-44 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 4 TO 8 MPH.

.OUTLOOK FOR WEDNESDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......350.
  SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....51-54.
  MIN HUMIDITY........17-21 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 5-10 MPH.



FORECASTER...SCHOENING
REQUESTED BY...COATES
REASON FOR REQUEST...PRESCRIBED
.TAG 20090120.DUCKC.01/SLC

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