FNUS75 KSLC 011320
FWSSLC

SPOT FORECAST FOR DUCK CREEK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
620 AM MST TUE DEC 1 2009

.DISCUSSION...A WEAK COLD FRONT WILL MOVE ACROSS THE BURN AREA LATE
THIS AFTERNOON. THIS IS A RATHER DRY FRONT...AND ITS ONLY EFFECTS
WILL BE INCREASED MIXING AS THE COLD AIR MOVES IN OVERHEAD. WINDS
TODAY AND TONIGHT ARE EXPECTED TO BE MAINLY TERRAIN DRIVEN. A SECOND
FRONT WILL MOVE THROUGH THE STATE WEDNESDAY...PUSHING MORE COLD AIR
INTO THE AREA. THERE IS A STRONGER GRADIENT WITH THIS SECOND
FRONT...AND NORTHERLY WINDS ARE EXPECTED TO OVERCOME LOCAL EFFECTS
WEDNESDAY AFTERNOON. THIS SECOND FRONT IS ALSO VERY DRY...AND WILL
DO LITTLE MORE THAN SHIFT THE WINDS NORTHERLY AND IMPROVE MIXING
WITH EVEN COLDER AIR ALOFT. DECENT MIXING IS EXPECTED THROUGH
THURSDAY. HOWEVER...CLEARING INDICES WILL LIKELY DECREASE FRIDAY AS
TEMPERATURES BEGIN TO WARM ALOFT.

AS FAR AS THE EXTENDED RANGE FORECAST...UNSETTLED WEATHER IS
EXPECTED BEGINNING EARLY NEXT WEEK. HOWEVER...THERE IS STILL
CONSIDERABLE DISAGREEMENT AMONG THE MODELS AS TO STORM TIMING AND
DETAILS. HOWEVER...THERE IS GENERAL AGREEMENT THAT THE CURRENT HIGH
PRESSURE WILL BREAK DOWN LATE THIS WEEK/EARLY NEXT WEEK.

.TODAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......640.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....50-53.
  MIN HUMIDITY........20-24 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 6-10 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....20-23.
  MAX HUMIDITY........74-76 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 3-7 MPH.

.OUTLOOK FOR WEDNESDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......720.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....42-46.
  MIN HUMIDITY........23-25 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 6-10 MPH BECOMING NORTH
                      7-12 MPH AT TIMES IN THE AFTERNOON.



FORECASTER...HOSENFELD
REQUESTED BY...GOETZINGER
REASON FOR REQUEST...PRESCRIBED
.TAG 20091201.DUCKC.01/SLC

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