FNUS75 KSLC 071723
FWSSLC

SPOT FORECAST FOR JOES VALLEY P J
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1123 AM MDT THU MAY 7 2009

.DISCUSSION...A WEAK TROUGH PASSING THROUGH THE NORTHERN ROCKIES
SURGED A DRY COLD FRONT THROUGH THE BURN SITE OVERNIGHT. WESTERLY
TRANSPORT WINDS HAVE INCREASED IN RESPONSE TO THIS AND WILL
REMAIN AT MODERATE LEVELS THROUGH THE AFTERNOON HOURS ALLOWING
GUSTY SURFACE WINDS TO CONTINUE AT THE BURN SITE. A REINFORCING
SURGE OF COLD AIR ACCOMPANYING YET ANOTHER DRY COLD FRONT WILL
SURGE THROUGH THE JOES VALLEY BURN SITE AROUND BETWEEN 08-10Z
TONIGHT. THIS WILL SWITCH TRANSPORT WINDS MORE NORTHWESTERLY AND
STABILIZE THE LOW LEVELS SIGNIFICANTLY FOR THE EARLY MORNING
HOURS FRIDAY. REGARDLESS...A COMBINATION OF MID LEVEL COOLING AND
DAYTIME HEATING IS EXPECTED TO RAISE MIXING HEIGHTS ENOUGH TO
ALLOW CLEARING INDICES TO REACH UNLIMITED LEVELS AFTER 9 AM
FRIDAY. TRENDS FOR THE WEEKEND ARE EXPECTED TO RETAIN ELEVATED
CLEARING INDICES AS NO SIGNIFICANT PATTERN CHANGES ARE ANTICIPATED
AT THIS TIME.

.TODAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....57-60.
  MIN HUMIDITY........23-25 PERCENT.
  WINDS - 20-FOOT.....BREEZY. WEST NORTHWEST WINDS 10 TO 20 MPH WITH
                      GUSTS APPROACHING 35 MPH.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........2 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....35-37.
  MAX HUMIDITY........61-63 PERCENT.
  WINDS - 20-FOOT.....BREEZY. WEST WINDS 15 TO 25 MPH WITH GUSTS TO
                      AROUND 40 MPH BECOMING IN THE EARLY EVENING.
                      WINDS DECREASING TO NORTHWEST 10 TO 20 MPH
                      OVERNIGHT.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....53-58.
  MIN HUMIDITY........22-25 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO
                      30 MPH IN THE AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...DARON REYNOLDS
REASON FOR REQUEST...PRESCRIBED
.TAG 20090508.JOESV.01/SLC

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