FNUS75 KSLC 251029
FWSSLC

SPOT FORECAST FOR 1ST AND 4TH RX
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
429 AM MDT FRI SEP 25 2009

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE
AREA TODAY...WITH A WARMING AND DRYING TREND THROUGH THE WEEKEND.
NORTHWEST FLOW WILL PERSIST THROUGH SUNDAY...WITH THE RELATIVELY
LIGHT WEST-NORTHWEST FREE AIR WINDS ON SUNDAY LIKELY TO SIMPLY
ENHANCE THE NATURAL DAYTIME UPSLOPE/UPVALLEY FLOW AT THE SITE.

A DEEP PACIFIC TROUGH WILL MOVE INTO THE WESTERN US BEGINNING
MONDAY...WITH MONDAY AFTERNOON LIKELY BRINGING GUSTY SOUTH-
SOUTHWESTERLY WINDS TO THE BURN SITE...WITH GUSTS OF AT LEAST 20
MPH APPEARING LIKELY MONDAY AFTERNOON. WINDS WILL INCREASE AND
BECOME EVEN GUSTIER FROM THE SOUTHWEST ON MONDAY NIGHT AND
TUESDAY. SOME UNCERTAINTY STILL EXISTS WITH THE TIMING OF THE
ASSOCIATED COLD FRONT...BUT IT IS CURRENTLY EXPECTED TO MOVE
THROUGH THE AREA AS EARLY AS LATE TUESDAY AFTERNOON OR AS LATE AS
WEDNESDAY MORNING. THIS COLD FRONT WILL SWITCH THE WINDS TO GUSTY
NORTHWESTERLIES AND WILL BRING A SIGNIFICANTLY MOISTER AND COLDER
AIRMASS TO THE AREA...WITH THE POTENTIAL OF SNOWFALL AT THE BURN
SITE.

.TODAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....72-75.
  MIN HUMIDITY........18-20 PERCENT.
  WINDS - 20-FOOT.....WEST-NORTHWEST WINDS 5-10 MPH WITH
                      GUSTS TO 15 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....46-48.
  MAX HUMIDITY........46-49 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 4 TO 8 MPH.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......800.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....72-75.
  MIN HUMIDITY........18-20 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST 5-10 MPH.



FORECASTER...SCHOENING
REQUESTED BY...COLT MORTENSON
REASON FOR REQUEST...PRESCRIBED
.TAG 20090927.1STAN.01/SLC

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