FNUS75 KSLC 231545
FWSSLC

SPOT FORECAST FOR COLONY PILES
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
845 AM MST MON NOV 23 2009

.DISCUSSION...A RIDGE OF HIGH PRESSURE ALONG THE WEST COAST WILL
BUILD ACROSS THE REGION THROUGH WEDNESDAY WITH A SUBSIDENCE
INVERSION DEVELOPING BY THIS EVENING.  TRANSPORT WINDS WILL BE
MODERATE TODAY WHICH WILL ALLOW FOR HORIZONTAL DISPERSION...BUT THE
RAPIDLY DEVELOPING SUBSIDENCE INVERSION WILL CAP VERTICAL
DEVELOPMENT.  A STRONG INVERSION AND LIGHT FLOW CAN BE EXPECTED BOTH
TUESDAY AND WEDNESDAY.

.TODAY...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  CLEARING INDEX......180.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER)
                      UNTIL 1000...THEN MOSTLY SUNNY (25-35 PERCENT
                      CLOUD COVER). A CHANCE OF SNOW UNTIL NOON.
  MAX TEMPERATURE.....24-26.
  MIN HUMIDITY........62-64 PERCENT.
  WINDS - 20-FOOT.....MAINLY NORTHWEST WINDS AROUND 10 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLEAR (25-35 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....15-17.
  MAX HUMIDITY........84-86 PERCENT.
  WINDS - 20-FOOT.....NORTH WINDS 5 TO 10 MPH BECOMING LIGHT AND
                      VARIABLE.

.OUTLOOK FOR TUESDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......130.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....37-39.
  MIN HUMIDITY........38-40 PERCENT.
  WINDS - 20-FOOT.....VARIABLE WINDS 5 MPH BECOMING NORTHWEST BY
                      EARLY AFTERNOON.



FORECASTER...BARJENBRUCH
REQUESTED BY...RUTTER
REASON FOR REQUEST...PRESCRIBED
.TAG 20091123.COLON.01/SLC

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