FNUS75 KSLC 191248
FWSSLC

SPOT FORECAST FOR DUCK CREEK FUELS ASPEN
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
648 AM MDT WED OCT 19 2011

.DISCUSSION...UPPER LEVEL RIDGE SHIFTING RAPIDLY EAST OF THE AREA
THIS MORNING AS WEAKENING STORM SYSTEM MOVES THROUGH THE GREAT
BASIN. THIS WEAKENING STORM SYSTEM WILL GRAZE NORTHERN UTAH TODAY.
HOWEVER...THE APPROACH OF THIS SYSTEM WILL RESULT IN DEEPER
MIXING AND AN INCREASE IN TRANSPORT WINDS TODAY WHICH IS EXPECTED
TO RESULT IN DECENT CLEARING INDICES AT THE BURN SITE. HIGH
PRESSURE RAPIDLY BUILDS BACK OVER UTAH ON THURSDAY RESULTING IN
LIGHT TRANSPORT WINDS AND LOWER CLEARING INDICES. ANOTHER WEAK
STORM SYSTEM WILL GRAZE NORTHERN UTAH ON FRIDAY. THIS WILL AGAIN
LEAD TO AN INCREASE IN TRANSPORT WINDS..ALTHOUGH NOT AS MUCH OF AN
INCREASE AS IS EXPECTED TODAY. EVEN WITH AN INCREASE IN THE
TRANSPORT WINDS...CLEARING INDICES MAY STILL BE MARGINAL AS MIXING
DEPTH DOES NOT IMPROVE ON FRIDAY.

OVER THE WEEKEND TRANSPORT WINDS WILL REMAIN RATHER LIGHT AS AN
UPPER LEVEL RIDGE REMAINS IN PLACE OVER THE AREA. THIS WILL LIKELY
KEEP CLEARING INDICES RELATIVELY LOW. EARLY NEXT WEEK THERE IS THE
POTENTIAL FOR A STRONG FRONT TO APPROACH UTAH FROM THE NORTH. THIS
IS EXPECTED TO LEAD TO A SUBSTANTIAL INCREASE IN MIXING DEPTH AND
TRANSPORT WINDS FOR MONDAY...YIELDING HIGH CLEARING INDICES.


.TODAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......750.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....65-70.
  MIN HUMIDITY........12-17 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 3-7 MPH BECOMING SOUTHWEST 5-15
                      MPH THIS AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....34-38.
  MAX HUMIDITY........53-55 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY 3-7 MPH.

.OUTLOOK FOR THURSDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......300.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....64-69.
  MIN HUMIDITY........14-19 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY 3-8 MPH.



FORECASTER...GRAHAM
REQUESTED BY...ERIC EASTEP
REASON FOR REQUEST...PRESCRIBED
.TAG 20111019.DUCKC.01/SLC

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