FNUS75 KSLC 081434
FWSSLC

SPOT FORECAST FOR STUMP SPRINGS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
834 AM MDT FRI MAY 8 2009

.DISCUSSION...A FAST MOVING DISTURBANCE PASSING THROUGH THE
NORTHERN ROCKIES SURGED ANOTHER COLD FRONT THROUGH THE BURN SITE
OVERNIGHT. THAT SAID...ANOTHER DAY OF GOOD VENTILATION ACROSS THE
BURN SITE IS EXPECTED WITH RELATIVELY DEEP MIXING AND STOUT 20 TO
30 KNOT TRANSPORT WINDS ALOFT. MOST OF THIS WIND SHOULD TRANSLATE
DOWN TO THE SURFACE LATE THIS MORNING THROUGH EARLY THIS
EVENING...WITH SURFACE WINDS BECOMING GUSTY AND LIKELY
APPROACHING 30 MPH AT TIMES DURING PEAK HEATING. THE SURFACE
GRADIENT WILL BEGIN TO RELAX LATE THIS AFTERNOON AND OVERNIGHT
TONIGHT AS WEAK HIGH PRESSURE BUILDS INTO NORTHERN AND CENTRAL
UTAH...BUT CLEARING INDICES SHOULD ONCE AGAIN RISE TO UNLIMITED
LEVELS MID MORNING SATURDAY. THE LARGE SCALE PATTERN DOES NOT
LOOK TO CHANGE MUCH THROUGH EARLY NEXT WEEK...THUS ITS
ANTICIPATED THAT GOOD VENTILATION WILL OCCUR DURING THE DAYTIME
HOURS THROUGH MONDAY AT LEAST.



.TODAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....71-73.
  MIN HUMIDITY........10-14 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
                      WEST 20 MPH WITH GUSTS TO 30 MPH IN THE
                      AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....36-40.
  MAX HUMIDITY........29-34 PERCENT.
  WINDS - 20-FOOT.....NORTH WINDS 10 TO 15 MPH DECREASING TO
                      5 TO 10 MPH LATE NIGHT.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....72-74.
  MIN HUMIDITY........9-13 PERCENT.
  WINDS - 20-FOOT.....VARIABLE 5 TO 10 MPH WINDS THROUGH 9 AM
                      BECOMING PREVAILING WEST NORTHWEST
                      10 TO 20 MPH WITH GUSTS TO 25 MPH FOR
                      THE AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...GREGG CHRISTENSEN
REASON FOR REQUEST...PRESCRIBED
.TAG 20090508.STUMP.01/SLC

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