FNUS75 KSLC 172041
FWSSLC

SPOT FORECAST FOR TWIN KNOLLS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
241 PM MDT FRI JUL 17 2009

.DISCUSSION...HIGH PRESSURE ALOFT WILL REMAIN CENTERED OVER THE
AREA TODAY THROUGH THE UPCOMING WEEKEND...RESULTING IN LIGHT
WINDS GENERALLY DRIVEN BY TERRAIN FLOWS. THIS RIDGE WILL ALSO
CONTINUE TO RESULT IN HOT TEMPERATURES AND LOW RELATIVE
HUMIDITIES...WITH GENERALLY POOR OVERNIGHT RECOVERY. SUFFICIENT
HIGH BASED MOISTURE WILL BE IN PLACE ON SATURDAY TO ALLOW FOR
AFTERNOON BUILDUPS OVER THE HIGHER TERRAIN TO THE NORTH...AND IF
THESE ARE ABLE TO DEVELOP INTO THUNDERSTORMS...NORTHERLY OUTFLOW
WINDS MAY REACH THE SITE DURING THE MID TO LATE AFTERNOON.
HIGH BASED MOISTURE IS EXPECTED TO INCREASE SUNDAY RESULTING IN
A BETTER CHANCE FOR THUNDERSTORMS...MAINLY JUST TO THE NORTH OF
THE SITE.

.REST OF TODAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....87-89.
  MIN HUMIDITY........5-7 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST/UPSLOPE 4-8 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....55-58.
  MAX HUMIDITY........31-34 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST/DOWNSLOPE 4-9 MPH.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER) THEN
                      BECOMING PARTLY CLOUDY (35-45 PERCENT CLOUD
                      COVER). AFTERNOON BUILDUPS OVER THE HIGHER
                      TERRAIN TO THE NORTH.
  MAX TEMPERATURE.....89-92.
  MIN HUMIDITY........5-7 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST/DOWNSLOPE 3-6 MPH BECOMING
                      SOUTHEAST/UPSLOPE 4-9 MPH. WINDS MAY SWITCH
                      TO THE NORTH AND BECOME GUSTY DURING THE
                      AFTERNOON IF STORMS DEVELOP OVER THE UINTA
                      RANGE TO THE NORTH.



FORECASTER...SEAMAN
REQUESTED BY...MIKE LEFLER
REASON FOR REQUEST...WILDFIRE
.TAG 20090717.TWINK.01/SLC

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