FNUS75 KSLC 130119
FWSSLC

SPOT FORECAST FOR MILL FLAT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
719 PM MDT SAT SEP 12 2009

.DISCUSSION...WEAK HIGH PRESSURE OVER SOUTHWESTERN UTAH THIS
EVENING WILL SHIFT EAST TONIGHT WITH A SOUTHWEST FLOW FORECAST
FOR THIS AREA SUNDAY THROUGH MONDAY. MOISTURE WILL INCREASE
SOMEWHAT LATER TONIGHT KEEPING A SMALL THREAT OF SHOWERS AND
THUNDERSTORMS GOING OVER SOUTHWEST UTAH OVERNIGHT. MOISTURE WILL
INCREASE FURTHER SUNDAY INTO MONDAY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS EACH DAY. SOUTHWEST WINDS WILL INCREASE SUNDAY OVER
THE RIDGES AND COULD OVERCOME THE LOCAL UPSLOPE WINDS IN THE
AFTERNOON CREATING SWIRLING WINDS IN THE CANYONS. SIMILAR WIND
CONDITIONS ARE EXPECTED FOR MONDAY WITH A POSSIBILITY OF WINDS
NOT COMPLETELY DROPPING OFF SUNDAY NIGHT. WINDS NEAR ANY SHOWERS
WILL BE STRONG GUSTY AND ERRATIC. A WEAK COLD FRONT WILL CROSS
THE FIRE SITE MONDAY NIGHT AND BRING AND COOLER AND MORE STABLE
AIRMASS FOR TUESDAY WITH LIGHTER WINDS. HUMIDITIES WILL START TO
COME UP TONIGHT WITH BETTER OVERNIGHT RECOVERIES SUNDAY AND
MONDAY.


.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....51-53.
  MAX HUMIDITY........40-42 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5-10 MPH BECOMING LOCAL DOWNSLOPE
                      1-5 MPH AFTER 2100. BRIEF ERRATIC WINDS TO
                      15 MPH NEAR ANY SHOWERS.

.SUNDAY...
  LAL.................2 UNTIL NOON...THEN 3.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS...MAINLY
                      AFTER NOON.
  MAX TEMPERATURE.....80-82.
  MIN HUMIDITY........18-21 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5-10 MPH INCREASING TO
                      20-25 MPH AFTER NOON. ERRATIC GUSTS TO 40 MPH
                      NEAR ANY STORMS.

.OUTLOOK FOR MONDAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
                      THE MORNING...THEN A CHANCE OF SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....76-79.
  MIN HUMIDITY........24-27 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5-10 MPH INCREASING TO 15-20
                      MPH AFTER NOON. ERRATIC GUSTS TO AROUND 40 MPH
                      NEAR ANY STORMS.



FORECASTER...WILENSKY
REQUESTED BY...GREG BARTON
REASON FOR REQUEST...WILDFIRE
.TAG 20090912.MILLF.01/SLC

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