FNUS75 KSLC 151450
FWSSLC

SPOT FORECAST FOR DUCK CREEK PILES
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
750 AM MST THU JAN 15 2009

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO BUILD NORTH ALONG THE
WEST COAST TODAY...BEFORE GRADUALLY SHIFTING EAST INTO THE
INTERMOUNTAIN WEST THROUGH THE END OF THE WEEK. BOTTOM LINE GIVES
MARGINAL CLEARING INDICES ABOVE 500 IN THE 1000 AM THROUGH 4PM
WINDOW TODAY AS NORTH WIND GUSTS INCREASE JUST ENOUGH FOR
SUFFICIENT LOW LEVEL MIXING...BUT TRENDS FOR FRIDAY LOOK TO LIMIT
MIDDAY MIXING AS OVERNIGHT INVERSIONS SHOULD STRENGTHEN AND
DAYTIME WINDS SHOULD RELAX. FOR THIS REASON HAVE OPTED TO KEEP
CLEARING INDECES BELOW 500 FOR FRIDAY. LOOKING OUT...STABLE HIGH
PRESSURE IS EXPECTED TO DOMINATE WITH THE NEXT POTENTIAL STORM
THREAT SIX TO SEVEN DAYS OUT.

.TODAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......560 AFTER 1000.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....49-51.
  MIN HUMIDITY........20-22 PERCENT.
  WINDS - 20-FOOT.....NORTH WINDS 5 TO 10 MPH GUSTS TO 20MPH AFTER 1100.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....22-24.
  MAX HUMIDITY........37-39 PERCENT.
  WINDS - 20-FOOT.....VARIABLE WINDS 4 TO 7 MPH.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......400.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....50.
  MIN HUMIDITY........18-20 PERCENT.
  WINDS - 20-FOOT.....EAST WINDS 5 TO 10 MPH.



FORECASTER...MERRILL/CONGER
REQUESTED BY...BODE MECHAM
REASON FOR REQUEST...PRESCRIBED
.TAG 20090115.DUCKC.01/SLC

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