FNUS75 KSLC 171457
FWSSLC

SPOT FORECAST FOR PRETTY TREE BENCH
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
758 AM MST TUE NOV 17 2009

.DISCUSSION...HIGH PRESSURE WILL REMAIN OVERHEAD TODAY...CONTINUING
CALM...STABLE CONDITIONS. AS A RESULT...TERRAIN DRIVEN WINDS WILL
PREVAIL...AND CLEARING INDICES WILL BE QUITE LOW. WINDS WILL
INCREASE SOMEWHAT TOMORROW FROM THE SOUTH AHEAD OF AN APPROACHING
WEAK SYSTEM...AND MAY ENHANCE LOCAL UPSLOPE WINDS AT TIMES. THESE
WINDS...COMBINED WITH COOLING TEMPERATURES ALOFT SHOULD ACT TO
IMPROVE CLEARING INDICES. A WEAK FRONT WILL CROSS THE BURN AREA
THURSDAY MORNING. THERE IS VERY LITTLE MOISTURE WITH THE FRONT...AND
PRECIPITATION IS NOT EXPECTED TO ACCOMPANY THE FRONT. CALM...STABLE
CONDITIONS RETURN THURSDAY AS A  SHORT-LIVED RIDGE BUILDS OVERHEAD.A
MUCH STRONGER FRONT WILL MOVE ACROSS THE AREA SATURDAY. SOUTH WINDS
WILL INCREASE SIGNIFICANTLY FRIDAY AHEAD OF THE FRONT.

.TODAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......100.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....39-44.
  MIN HUMIDITY........23-28 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 3-5 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....26-30.
  MAX HUMIDITY........36-40 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 2-4 MPH.

.OUTLOOK FOR WEDNESDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......610.
  SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....43-47.
  MIN HUMIDITY........18-23 PERCENT.
  WINDS - 20-FOOT.....WEST SOUTHWEST 5-10 MPH.



FORECASTER...HOSENFELD
REQUESTED BY...GREGG CHRISTENSEN
REASON FOR REQUEST...PRESCRIBED
.TAG 20091117.PRETT.01/SLC

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