FNUS75 KSLC 280551
FWSSLC

SPOT FORECAST FOR PERSTON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1151 PM MDT SAT AUG 27 2011

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO HOLD STRONG THROUGH
THE REMAINDER OF THE WEEKEND. MONSOONAL MOISTURE REMAINS DEEP
ACROSS THE REGION BRINGING SCATTERED SHOWERS AND THUNDERSTORMS TO
THE VICINITY OF THE BURN SITE...PEAK COVERAGE AFTER 13-1400
TOMORROW AND MONDAY. HUMIDITY WILL CONTINUE TO RUN HIGH WITH
STRONG OVERNIGHT RECOVERIES THROUGH THE PERIOD...AND WINDS WILL
PRIMARILY BE DIURNALLY TERRAIN DRIVEN AT PERSTON. THE ONE THING
TO MENTION ABOUT THE WINDS IS THE POTENTIAL FOR OUTFLOW DURING
THE AFTERNOON/EVENING HOURS TOMORROW AFTERNOON. SHOWER AND
THUNDERSTORM DEVELOPMENT OVER NEIGHBORING TERRAIN MAY CAUSE BRIEF
AND ERRATIC WIND CONDITIONS WITH WINDS PRIMARILY FROM A WESTERLY
ORIENTATION AND GUSTS UP TO 25 MPH.

.REST OF TONIGHT...
  LAL.................2.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS 0200.
  MIN TEMPERATURE.....60-62.
  MAX HUMIDITY........85-95 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 4-9 MPH.


.SUNDAY...
  LAL.................2 UNTIL NOON...THEN 3.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......590.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      UNTIL NOON...THEN SCATTERED SHOWERS AND
                      THUNDERSTORMS DEVELOPING OVER THE BULL VALLEY
                      MOUNTAINS AFTER 1400 WITH A 30 PERCENT CHANCE
                      THEY WILL MOVE OVER THE BURN SIGHT AFTER 1400.
  MAX TEMPERATURE.....91-93.
  MIN HUMIDITY........24-26 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 4-9 MPH IN THE MORNING INCREASING
                      TO PREVAILING SOUTHWEST WINDS 5-9 GUSTING 15 MPH
                      AFTER 1300. OUTFLOW FROM THUNDERSTORMS WILL LIKELY
                      PRODUCE BRIEF PERIODS OF WEST TO NORTHWEST WINDS
                      8-12 MPH WITH GUSTS TO 20 MPH AFTER 1400.

.OUTLOOK FOR MONDAY...
  LAL.................2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
  MAX TEMPERATURE.....92-94.
  MIN HUMIDITY........19-21 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 5 MPH INCREASING TO SOUTHWEST
                      10-20 MPH IN THE AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...IC
REASON FOR REQUEST...PRESCRIBED
.TAG 20110827.PERST.01/SLC

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