FNUS75 KSLC 030135
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
734 PM MDT THU SEP 2 2010

.DISCUSSION...HIGH PRESSURE OVER THE AREA THROUGH THE END OF THE
WEEK WILL RESULT IN A DRY AND STABLE AIRMASS AND WARMING TREND.
NORTH WINDS TODAY WILL DECREASE TONIGHT...WITH LIGHT AND
TERRAIN-DRIVEN WINDS EXPECTED TOMORROW. SOUTHWEST FLOW WILL BEGIN TO
INCREASE ON SATURDAY...THEN BECOME STRONG BY SUNDAY AHEAD OF AN
APPROACHING STORM SYSTEM. THIS STORM SYSTEM WILL PUSH A DRY COLD
FRONT ACROSS THE BURN AREA SUNDAY NIGHT...TURNING WINDS TO THE
NORTHWEST. SIGNIFICANT COOLING IS EXPECTED ON MONDAY BEHIND THIS
FRONT.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....8000 FEET...45-49.
                      10000 FEET...44-47.
  MAX HUMIDITY........8000 FEET...39-43 PERCENT.
                      10000 FEET...37-40 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST 8 TO 12 MPH BECOMING
                      DOWNSLOPE/DOWNVALLEY 2 TO 5 MPH AFTER 2200.
  WINDS - RIDGETOP....NORTHWEST WINDS 5 TO 10 MPH BECOMING
                      SOUTH 4 TO 8 MPH AFTER MIDNIGHT.

.FRIDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......820.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....8000 FEET...75-79.
                      10000 FEET...74-77.
  MIN HUMIDITY........8000 FEET...16-20 PERCENT.
                      10000 FEET...20-23 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY WINDS 2 TO 5 MPH BECOMING
                      UPSLOPE/UPVALLEY 4 TO 8 MPH AFTER NOON.
  WINDS - RIDGETOP....SOUTHWEST WINDS 5 TO 10 MPH.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....8000 FEET...77-81.
                      10000 FEET...74-77.
  MIN HUMIDITY........8000 FEET...13-17 PERCENT.
                      10000 FEET...17-20 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE/DOWNVALLEY WINDS 2 TO 5 MPH BECOMING
                      SOUTHWEST WINDS 6 TO 10 MPH IN THE AFTERNOON.
  WINDS - RIDGETOP....SOUTHWEST WINDS 10 TO 15 MPH WITH AFTERNOON
                      GUSTS TO 22 MPH.

.OUTLOOK FOR SUNDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....8000 FEET...76-80.
                      10000 FEET...73-76.
  MIN HUMIDITY........8000 FEET...14-18 PERCENT.
                      10000 FEET...20-24 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 11 TO 17 MPH WITH AFTERNOON
                      GUSTS TO 22 MPH.
  WINDS - RIDGETOP....SOUTHWEST WINDS 25 TO 30 MPH WITH AFTERNOON
                      GUSTS TO 45 MPH.

.OUTLOOK FOR MONDAY...
  LAL.................1.
  HAINES INDEX........3 ..LOW.
  CLEARING INDEX......600.
  SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....8000 FEET...67-71.
                      10000 FEET...62-66.
  MIN HUMIDITY........8000 FEET...19-23 PERCENT.
                      10000 FEET...26-30 PERCENT.
  WINDS - 20-FOOT.....WEST-NORTHWEST WINDS 6 TO 10 MPH.
  WINDS - RIDGETOP....NORTHWEST WINDS 10 TO 15 MPH WITH AFTERNOON
                      GUSTS TO 22 MPH.

FORECASTER...CHENG
REQUESTED BY...RYAN MCCOLLIN
REASON FOR REQUEST...WILDFIRE
.TAG 20100902.TWITC.02/SLC

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