FNUS75 KSLC 071451
FWSSLC

SPOT FORECAST FOR TWIN HOLLOW
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
851 AM MDT MON SEP 7 2009

.DISCUSSION...A VERY WEAK COLD FRONT ACROSS NORTHWEST UTAH EARLY THIS
MORNING WILL MOVE VERY SLOWLY TO THE EAST-SOUTHEAST THROUGH THIS
AFTERNOON. THE FRONT WILL REMAIN NORTH AND WEST OF THE FIRE THROUGH
EARLY THIS EVENING...THEN SLOWLY MOVE SOUTH OF THE SITE OVERNIGHT.
PLENTY OF RESIDUAL MOISTURE REMAINS OVER EASTERN UTAH...SO CUMULUS
BUILDUPS WITH A FEW SHOWERS AND THUNDERSTORMS ARE POSSIBLE AHEAD OF
AN ALONG THE FRONT THROUGH EARLY THIS EVENING. DRIER AIR WILL SLOWLY
FILTER INTO NORTHEAST UTAH THROUGH TUESDAY. HIGH PRESSURE ALOFT WILL
THEN STRENGTHEN ACROSS THE INTERIOR WEST PRODUCING WARM AND DRY
CONDITIONS FROM MIDWEEK THROUGH THE COMING WEEKEND.

.TODAY...
  LAL.................1 UNTIL 1200...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER UNTIL 1000)...
                      THEN PARTLY CLOUDY (55-65 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200.
  MAX TEMPERATURE.....69-71.
  MIN HUMIDITY........26-29 PERCENT.
  WINDS - 20-FOOT.....WEST SOUTHWEST WINDS 12 TO 16 MPH...GUSTS TO
                      28 MPH.

.TONIGHT...
  LAL.................2 UNTIL 2000...THEN 1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER) WITH
                      A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      UNTIL 2000...THEN BECOMING MOSTLY CLEAR (15-25
                      PERCENT CLOUD COVER)
  MIN TEMPERATURE.....50-52.
  MAX HUMIDITY........59-62 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 12 TO 18 MPH...DECREASING TO 6 TO 12
                      MPH AFTER 2200.

.OUTLOOK FOR TUESDAY...
  LAL.................1 UNTIL 1200...THEN 2.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......970.
  SKY/WEATHER.........SUNNY (5-15 PERCENT CLOUD COVER) UNTIL 1000...
                      THEN PARTLY CLOUDY (40-50 PERCENT CLOUD COVER)
                      WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      AFTER 1200.
  MAX TEMPERATURE.....65-68
  MIN HUMIDITY........27-30 PERCENT.
  WINDS - 20-FOOT.....WEST NORTHWEST WINDS 7 TO 13 MPH....GUSTS TO
                      18 MPH.



FORECASTER...CONGER
REQUESTED BY...ALLAN HEPWORTH
REASON FOR REQUEST...WILDFIRE
.TAG 20090907.TWINH.01/SLC

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