FNUS75 KSLC 112312
FWSSLC

SPOT FORECAST FOR TWITCHELL
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
512 PM MDT MON OCT 11 2010

.DISCUSSION...BREEZY NORTHERLY WINDS WILL CONTINUE THROUGH THE
EVENING HOURS IN RESPONSE TO A DRY COLD FRONT MOVING THROUGH THE
AREA. THIS BOUNDARY MAY PRODUCE A FEW SHOWERS IN THE VICINITY OF
THE FIRE SITE THIS EVENING AND OVERNIGHT...BUT DRIER AIR IS
EXPECTED TO RAPIDLY MOVE INTO THE AREA TOMORROW MORNING. HIGH
PRESSURE WILL BEGIN TO DEVELOP OVER THE REGION DURING THE DAY ON
TUESDAY...RESULTING IN A DRY AND VERY STABLE AIRMASS OVER THE FIRE
SITE BY WEDNESDAY. NORTHERLY WINDS SHOULD BE SLIGHTLY ENHANCED
TOMORROW...BUT SHOULD BECOME LIGHT BY WEDNESDAY IN RESPONSE TO THE
STRONG RIDGE. DRY AND STABLE HIGH PRESSURE IS EXPECTED TO REMAIN
OVER THE FIRE SITE THROUGH FRIDAY.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS.
  MIN TEMPERATURE.....38-42.
  MAX HUMIDITY........78-82 PERCENT.
  WINDS - 20-FOOT.....NORTH TO NORTHWEST WINDS 10-15 MPH WITH GUSTS
                      TO 25 MPH BECOMING DOWNSLOPE/DOWNVALLEY 3-7 MPH
                      AFTER MIDNIGHT.

.TUESDAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......400.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN MOSTLY SUNNY (10-20 PERCENT
                      CLOUD COVER).
  MAX TEMPERATURE.....58-61.
  MIN HUMIDITY........28-32 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY WINDS 3-7 MPH BECOMING NORTH TO
                      NORTHWEST 8-12 MPH IN THE AFTERNOON.

.OUTLOOK FOR WEDNESDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......200.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....62-66.
  MIN HUMIDITY........22-26 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY WINDS 3-7 MPH.



FORECASTER...TRAPHAGAN
REQUESTED BY...RIFC
REASON FOR REQUEST...WILDFIRE
.TAG 20101011.TWITC.01/SLC

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