FNUS75 KSLC 230100
FWSSLC

SPOT FORECAST FOR COOPER KNOLLS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
700 PM MDT THU SEP 22 2011

.DISCUSSION...HIGH PRESSURE ALOFT WILL REMAIN ACROSS THE AREA
THROUGH FRIDAY MAINTAINING A DRY AIRMASS ACROSS THE AREA...AND
RESULTING IN LIGHT WINDS DRIVEN BY DIURNAL SLOPE FLOWS. THIS WILL
GREATLY LIMIT VENTILATION...ALTHOUGH IT APPEARS CLEARING INDICES
WILL EXCEED 500 BY EARLY AFTERNOON. A COUPLE OF WEAK WEATHER
SYSTEMS WILL CROSS THE AREA OVER THE WEEKEND INTO EARLY NEXT
WEEK...ALLOWING FOR A SMALL CHANCE OF SHOWERS AND THUNDERSTORMS.
SOUTH WINDS WILL INCREASE A BIT SATURDAY...ALTHOUGH MOST OF THE
SITE WILL LIKELY REMAIN SHELTERED. SOUTHWEST WINDS LOOK TO BECOME
BREEZY BY SUNDAY...AHEAD OF THE SECOND SYSTEM WHICH WILL CROSS THE
AREA SUNDAY NIGHT. HIGH PRESSURE ALOFT WILL THEN RETURN FOR MUCH OF
NEXT WEEK.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....47-50.
  MAX HUMIDITY........37-40 PERCENT.
  WINDS - 20-FOOT.....SOUTH/DOWNSLOPE 4-9 MPH.

.FRIDAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......550.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....71-74.
  MIN HUMIDITY........15-18 PERCENT.
  WINDS - 20-FOOT.....SOUTH/DOWNSLOPE 3-7 MPH BECOMING NORTH/UPSLOPE
                      4-9 MPH IN THE LATE MORNING AND AFTERNOON.

.OUTLOOK FOR SATURDAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......850.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
                      THE AFTERNOON.
  MAX TEMPERATURE.....70-73.
  MIN HUMIDITY........18-21 PERCENT.
  WINDS - 20-FOOT.....SOUTH/DOWNSLOPE 3-7 MPH BECOMING NORTH/UPSLOPE
                      4-9 MPH LATE MORNING THROUGH AFTERNOON.
                      RIDGELINE WINDS SOUTH 5-10 MPH.



FORECASTER...SEAMAN
REQUESTED BY...JOE HARRIS
REASON FOR REQUEST...PRESCRIBED
.TAG 20110922.COOPE.02/SLC

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