FNUS75 KSLC 070121
FWSSLC

SPOT FORECAST FOR SWASEY PILE BURN
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
621 PM MST WED FEB 6 2013

.DISCUSSION...A SURFACE HIGH WILL BUILD OVER THE REGION OVERNIGHT
CREATING AN INVERSION WHICH WILL HAVE A BASE NEAR 9-10K MSL. THE
TRANSPORT WINDS BELOW THIS INVERSION WILL BE SOUTHWEST AT ABOUT
10KT WHICH KEEPS THE CLEARING INDEX IN THE POOR CATEGORY FOR
THURSDAY. AN APPROACHING STORM SYSTEM WILL RAMP THE SOUTHERLY
WINDS UP ON FRIDAY BUT THE INVERSION WILL NOT LIKELY BREAK UNTIL
AFTER 1500 MST FRIDAY AFTERNOON. CONSEQUENTLY YOU WILL HAVE
EXCELLENT HORIZONTAL TRANSPORT WINDS FRIDAY BUT THE TRUE VERTICAL
MIXING WILL NOT HAPPEN UNTIL LATER IN THE DAY. SNOW WILL DEVELOP
DURING THE AFTERNOON ADDING TO THE FACT THAT THE CLEARING INDEX
WILL GO OVER 1000 PLUS. SEVERAL INCHES OF SNOW ARE EXPECTED
THROUGH SATURDAY.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....20-22.
  MAX HUMIDITY........86-88 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
                      NORTH 5 MPH AFTER MIDNIGHT.

.THURSDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......470.
  SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....41-43.
  MIN HUMIDITY........24-26 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 MPH SHIFTING TO THE EAST IN
                      THE AFTERNOON.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (90-100 PERCENT CLOUD COVER).
                      OCCASIONAL SNOW DEVELOPING.
  MAX TEMPERATURE.....28-31.
  MIN HUMIDITY........64-66 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 10 MPH.



FORECASTER...STRUTHWOLF
REQUESTED BY...DIRK ROGERS
REASON FOR REQUEST...PRESCRIBED
.TAG 20130207.SWASE.01/SLC

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