FNUS75 KSLC 211437
FWSSLC

SPOT FORECAST FOR DUCK CREEK PILES
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
737 AM MST WED JAN 21 2009

.DISCUSSION...HIGH PRESSURE WILL BEGIN SHIFTING EASTWARD TODAY
AND TOMORROW. THIS WILL ALLOW A LIGHT SOUTHWESTERLY FLOW TO
DEVELOP...BRINGING CLOUDS INTO THE AREA STARTING TODAY AND A
CHANCE OF LIGHT PRECIPITATION BEGINNING THURSDAY...BUT CONDITIONS
WILL REMAIN MOSTLY STABLE THROUGH THAT TIME. A WEAK WAVE MOVING
THROUGH THE STATE ON FRIDAY WILL IMPROVE MIXING A LITTLE
BIT...BUT THE IDEA OF CLEARING INDICES ABOVE 500 APPEARS TO BE
MARGINAL AT BEST. CLEARING SHOULD BEGIN TO IMPROVE GREATLY ON
SUNDAY AND CONTINUING INTO THE BEGINNING OF NEXT WEEK AS A DEEP
LOW PRESSURE SYSTEM MOVES OVER THE WESTERN UNITED STATES.

.TODAY...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  CLEARING INDEX......350.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER)
                      UNTIL 1200...THEN MOSTLY CLOUDY (70-80
                      PERCENT CLOUD COVER).
  MAX TEMPERATURE.....50-54.
  MIN HUMIDITY........17-21 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER). A
                      CHANCE OF SNOW AFTER 1800.
  MIN TEMPERATURE.....32-35.
  MAX HUMIDITY........68-72 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH.

.OUTLOOK FOR THURSDAY...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  CLEARING INDEX......210.
  SKY/WEATHER.........MOSTLY CLOUDY (85-95 PERCENT CLOUD COVER). A
                      CHANCE OF SNOW.
  MAX TEMPERATURE.....48-52.
  MIN HUMIDITY........35-39 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH.



FORECASTER...SCHOENING
REQUESTED BY...COATES
REASON FOR REQUEST...PRESCRIBED
.TAG 20090121.DUCKC.01/SLC

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