FNUS75 KSLC 241349
FWSSLC

SPOT FORECAST FOR COOPER KNOLLS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
749 AM MDT SAT SEP 24 2011

.DISCUSSION...HIGH PRESSURE ALOFT WHICH HAS RESIDED ACROSS THE
REGION OVER THE PAST COUPLE OF DAYS MOVED EAST
OVERNIGHT...ALLOWING A LIGHT SOUTHERLY FLOW ALOFT TO DEVELOP.
THIS IS AHEAD OF A WEAK STORM SYSTEM ALONG THE CALIFORNIA COAST.
MOISTURE ASSOCIATED WITH THIS SYSTEM WILL SPREAD OVER THE AREA
BY THIS AFTERNOON...ALLOWING FOR A SMALL CHANCE OF HIGH BASED
SHOWERS AND DRY THUNDERSTORMS.

THIS SYSTEM IS EXPECTED TO WEAKEN AS IT MOVES ONSHORE TODAY
THROUGH TONIGHT...AHEAD OF A STRONGER SYSTEM EXPECTED TO PASS
NORTH OF THE AREA SUNDAY THROUGH SUNDAY NIGHT. THE MAIN IMPACT
FROM THIS SECOND SYSTEM LOOKS TO BE BREEZY SOUTHWEST WINDS DURING
THE DAY SUNDAY. WINDS IN THE WAKE OF THIS SECOND SYSTEM WILL
SWITCH AROUND TO THE NORTH AND WEAKEN SUNDAY NIGHT INTO MONDAY. A
STRONG RIDGE OF HIGH PRESSURE LOOKS TO FOLLOW FOR MUCH OF THE
UPCOMING WEEK...ALLOWING FOR CONDITIONS SIMILAR TO WHAT HAS BEEN
OBSERVED THE PAST FEW DAYS.


.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......840.
  SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF HIGH BASED SHOWERS AND DRY
                      THUNDERSTORMS AFTER NOON.
  MAX TEMPERATURE.....71-74.
  MIN HUMIDITY........10-13 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE 3-7 MPH BECOMING UPSLOPE 4-9 MPH
                      AFTER 1000. GUSTY ERRATIC WINDS NEAR SHOWERS
                      AND THUNDERSTORMS.

.TONIGHT...
  LAL.................2 UNTIL MIDNIGHT...THEN 1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF HIGH BASED SHOWERS AND DRY
                      THUNDERSTORMS UNTIL MIDNIGHT.
  MIN TEMPERATURE.....41-44.
  MAX HUMIDITY........37-40 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE 4-9 MPH. GUSTY ERRATIC WINDS NEAR
                      SHOWERS AND THUNDERSTORMS.

.OUTLOOK FOR SUNDAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF HIGH BASED SHOWERS AND DRY
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....NEAR 70.
  MIN HUMIDITY........22-25 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE 3-7 MPH BECOMING SOUTHWEST 10-15 MPH
                      WITH GUSTS TO 25 MPH AFTER NOON. GUSTY ERRATIC
                      WINDS NEAR SHOWERS AND THUNDERSTORMS.



FORECASTER...SEAMAN
REQUESTED BY...ERIC EASTEP
REASON FOR REQUEST...PRESCRIBED
.TAG 20110924.COOPE.01/SLC

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