FNUS75 KSLC 251530
FWSSLC

SPOT FORECAST FOR AMOS CANYON WFM
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
930 AM MDT SAT JUL 25 2009

.DISCUSSION...A VERY MOIST SOUTHWESTERLY FLOW ALOFT WILL PREVAIL
ACROSS THE REGION INTO SUNDAY. WITHIN IN THIS FLOW THERE ARE
EMBEDDED DISTURBANCES THAT WILL TEND TO FOCUS UPWARD LIFT TO
GENERATE CONVECTION. ONE SUCH DISTURBANCE IS OVER SOUTHWEST UTAH
THIS MORNING BUT IS ONLY PRODUCING AN EXTENSIVE CLOUD SHIELD AT
THIS TIME WITH VERY LIGHT SPRINKLES. ALTHOUGH A FEW BREAKS OF
SUNSHINE ARE LIKELY THROUGH 1100 THE CLOUD SHIELD FROM THE
UPSTREAM SYSTEM SHOULD MOVE OVER BY LATE MORNING. THIS CLOUD
SHIELD IF IT REMAINS RATHER DENSE COULD ACTUALLY INHIBIT
THUNDERSTORM DEVELOPMENT DURING THE EARLY AFTERNOON HOURS.
HOWEVER...THE POTENTIAL FOR SHOWERS AND THUNDERSTORMS SHOULD
INCREASE LATE TODAY AND EVENING AS ANOTHER SYSTEM IN WESTERN
ARIZONA MAKES IT WAY INTO UTAH. GENERAL MOVEMENT OF THUNDERSTORMS
SHOULD BE SOUTHWEST TO NORTHEAST.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2 BETWEEN 1200 AND 1600
                      AND 3 AFTER 1600.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT CLOUD COVER)
                      ISOLATED SHOWERS AND THUNDERSTORMS BETWEEN
                      1200 AND 1600 WITH SCATTERED SHOWERS AND
                      THUNDERSTORMS AFTER 1600.
  MAX TEMPERATURE.....72-74.
  MIN HUMIDITY........40-42 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 3-7 MPH.

.TONIGHT...
  LAL.................3 UNTIL MIDNIGHT...THEN 2.
  HAINES INDEX........2 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER)
                      UNTIL MIDNIGHT...THEN PARTLY CLOUDY (50-60
                      PERCENT CLOUD COVER). SCATTERED SHOWERS AND
                      THUNDERSTORMS UNTIL MIDNIGHT...THEN A SLIGHT
                      CHANCE OF SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....61-63.
  MAX HUMIDITY........66-68 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5 MPH SHIFTING TO THE NORTH LATE
                      IN THE EVENING...THEN BECOMING LIGHT AND
                      VARIABLE AFTER MIDNIGHT BECOMING SOUTHWEST 5
                      MPH EARLY IN THE MORNING.

.OUTLOOK FOR SUNDAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
                      THE MORNING...THEN A CHANCE OF SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....73-75.
  MIN HUMIDITY........40-42 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5 MPH SHIFTING TO THE NORTH EARLY
                      IN THE AFTERNOON...THEN SHIFTING TO THE
                      SOUTHWEST LATE IN THE AFTERNOON.



FORECASTER...STRUTHWOLF
REQUESTED BY...RICHFIELD DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20090725.AMOSC.01/SLC

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