FNUS75 KSLC 011512
FWSSLC

SPOT FORECAST FOR FOUR MILE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
912 AM MDT THU SEP 1 2011

...RED FLAG WARNING UNTIL 8 PM MDT THIS EVENING FOR GUSTY SOUTHWEST
WINDS AND LOW RELATIVE HUMIDITY...

.DISCUSSION...GUSTY SOUTHWEST WINDS WILL DEVELOP LATE THIS MORNING
THROUGH THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. THIS
COMBINED WITH VERY LOW RELATIVE HUMIDITY WILL RESULT IN CRITICAL
FIRE WEATHER CONDITIONS AT THE SITE THROUGH THIS EVENING. THIS
COLD FRONT IS EXPECTED TO REACH THE SITE AFTER 2000...RESULTING
IN A WIND SHIFT TO THE NORTH. A SLIGHTLY COOLER AND MORE STABLE
AIRMASS WILL FOLLOW THE FRONT FOR FRIDAY. HIGH PRESSURE ALOFT
LOOKS TO STRENGTHEN ACROSS THE REGION DURING THE UPCOMING
WEEKEND..WITH WINDS GENERALLY DRIVEN BY DIURNAL SLOPE FLOWS
BEGINNING FRIDAY.

.TODAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....85-88.
  MIN HUMIDITY........7-10 PERCENT.
  WINDS - 20-FOOT.....BREEZY. SOUTHWEST 8-15 MPH INCREASING TO
                      15-25 MPH WITH GUSTS TO 40 MPH AFTER 1200.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....52-55.
  MAX HUMIDITY........25-28 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 15-20 MPH WITH GUSTS TO 30 MPH
                      EARLY...BECOMING NORTH 8-15 MPH WITH GUSTS TO
                      25 MPH AFTER 2000...THEN DECREASING TO 5-10 MPH
                      AFTER MIDNIGHT.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......580.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....82-85.
  MIN HUMIDITY........10-13 PERCENT.
  WINDS - 20-FOOT.....NORTH WINDS 5-10 MPH SHIFTING TO THE SOUTH IN
                      THE AFTERNOON.



FORECASTER...SEAMAN
REQUESTED BY...PAUL CHRISTENSEN
REASON FOR REQUEST...WILDFIRE
.TAG 20110901.FOURM.01/SLC

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