FNUS75 KSLC 171408
FWSSLC

SPOT FORECAST FOR HIGH LAKES STABILIZATION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
808 AM MDT WED JUN 17 2009

.DISCUSSION...AN UPPER LEVEL TROUGH REMAINS OVER THE GREAT BASIN
TODAY WITH ANOTHER TROUGH PUSHING IN FROM THE NORTHWEST THIS
EVENING. ONE EMBEDDED SHORTWAVE IS LOCATED OVER THE GREAT SALT
LAKE AND IS FORECAST TO BASICALLY STALL IN PLACE THIS MORNING
BEFORE BEING NUDGED NORTHEAST THIS AFTERNOON INTO SOUTHWEST
WYOMING. ANOTHER SHORTWAVE IS LOCATED OVER WESTERN ARIZONA AND IS
FORECAST TO MOVE NORTHEAST TO THE BOOK CLIFFS AREA BY 1800 THIS EVENING.
ALTHOUGH YOUR BURN AREA IS BETWEEN THESE TWO MAJOR PLAYERS DRIVING
THE WEATHER TODAY THE ATMOSPHERE IS VERY MOIST AND THE GENERAL
FLOW IS SOUTHERLY. THIS MEANS UPSLOPE FLOW FOR THE BURN SITE WHICH
MEANS LOW CLOUDS ARE NOT LIKELY TO COMPLETELY DISSIPATE. CEILINGS OF
1000 TO 2000 FEET OR LOWER WILL LIKELY PREVAIL. HOWEVER...IF THERE WERE
TO BE A BREAK...30 PERCENT CHANCE...THE TIMING OF THE WINDOW OF
OPPORTUNITY WOULD BE BETWEEN 0900 AND 1100.

THE SECOND TROUGH FROM THE NORTHWEST MOVES THROUGH THURSDAY
MORNING AND BY AFTERNOON...UNDER A MORE WEST TO NORTHWEST FLOW THE
WINDOW OF OPPORTUNITY SHOULD BE GREATER THAN 50 PERCENT.

.TODAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (85-95 PERCENT CLOUD COVER).
                      STRAY LIGHT SHOWERS UNTIL NOON...THEN SCATTERED
                      SHOWERS...THUNDERSTORMS.
  MAX TEMPERATURE.....47-49.
  MIN HUMIDITY........66-68 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 5 TO 10 MPH.

.TONIGHT...
  LAL.................5 UNTIL MIDNIGHT...THEN 2.
  HAINES INDEX........2 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER).
                      NUMEROUS SHOWERS AND THUNDERSTORMS AND POSSIBLE
                      SNOW.
  MIN TEMPERATURE.....33-35.
  MAX HUMIDITY........100 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5 TO 10 MPH.

.OUTLOOK FOR THURSDAY...
  LAL.................1 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER)
                      THEN BECOMING PARTLY CLOUDY (60-70 PERCENT
                      CLOUD COVER). A CHANCE OF SNOW SHOWERS IN THE
                      MORNING...THEN A CHANCE OF SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....50.
  MIN HUMIDITY........59-61 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 5 TO 10 MPH.



FORECASTER...STRUTHWOLF
REQUESTED BY...CHAD RUNYAN
REASON FOR REQUEST...PRESCRIBED
.TAG 20090617.HIGHL.01/SLC

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