FNUS75 KSLC 040047
FWSSLC

SPOT FORECAST FOR CLAY SPRINGS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
647 PM MDT TUE JUL 3 2012

...RED FLAG WARNING FOR GUSTY SOUTH WINDS AND LOW RELATIVE
HUMIDITY EXTENDED UNTIL 9 PM MDT WEDNESDAY...

.DISCUSSION...A FRONTAL BOUNDARY WHICH MOVED INTO NORTHERN
UTAH THIS AFTERNOON WILL STALL NORTH OF THE FIRE SITE
OVERNIGHT...MAINTAINING A VERY DRY AIRMASS WITH VERY POOR
RH RECOVERY. GUSTY SOUTHWEST WINDS ARE EXPECTED TO DEVELOP
AGAIN DURING THE AFTERNOON HOURS WEDNESDAY...ONCE AGAIN
RESULTING IN CRITICAL FIRE WEATHER CONDITIONS.

MID LEVEL MOISTURE LOOKS TO SPREAD INTO THE AREA DURING THE
AFTERNOON HOURS WEDNESDAY. THIS MOISTURE MAY ALLOW FOR A FEW
AFTERNOON BUILDUPS WITH VIRGA AND PERHAPS A COUPLE DRY
LIGHTNING STRIKES...ALTHOUGH THE EXTENT OF THE CLOUD COVER
MAY WORK TO STABILIZE THE ATMOSPHERE AND LIMIT SHOWER AND
THUNDERSTORM ACTIVITY. MOISTURE IS EXPECTED TO CONTINUE
INCREASING WEDNESDAY NIGHT INTO THURSDAY...WITH A BETTER
CHANCE FOR SHOWERS AND THUNDERSTORMS BY THURSDAY AFTERNOON.
THIS MOISTURE WILL ALSO ALLOW DAYTIME RH VALUES TO TREND
SIGNIFICANTLY UPWARD.

HIGH PRESSURE ALOFT IS EXPECTED TO BUILD OVER THE REGION LATE
IN THE WEEK THOUGH THE UPCOMING WEEKEND. THIS WILL RESULT IN
LIGHTER DAYTIME WINDS GENERALLY DRIVEN BY SLOPE FLOWS...WITH
LINGERING MOISTURE PROVIDING A CHANCE FOR AFTERNOON AND
EVENING SHOWERS AND THUNDERSTORMS.



.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....61-64.
  MAX HUMIDITY........16-19 PERCENT.
  WINDS - 20-FOOT.....WEST-SOUTHWEST 6-12 MPH WITH GUSTS TO 20
                      MPH BECOMING DOWNVALLEY/DOWNSLOPE 4-9 MPH
                      AFTER 2100.

.WEDNESDAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN MOSTLY CLOUDY (65-75
                      PERCENT CLOUD COVER). A SLIGHT CHANCE OF
                      HIGH BASED SHOWERS AND DRY THUNDERSTORMS
                      AFTER NOON.
  MAX TEMPERATURE.....NEAR 80.
  MIN HUMIDITY........11-14 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5-10 MPH INCREASING TO 10-15 MPH
                      WITH GUSTS TO 25 MPH AFTER 1100.

.OUTLOOK FOR THURSDAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......850.
  SKY/WEATHER.........MOSTLY CLOUDY (75-85 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.....71-74.
  MIN HUMIDITY........25-28 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5-10 MPH.



FORECASTER...SEAMAN
REQUESTED BY...SOCAL IMT  1
REASON FOR REQUEST...WILDFIRE
.TAG 20120703.CLAYS.02/SLC

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