FNUS75 KSLC 140007
FWSSLC

SPOT FORECAST FOR PATCH SPRINGS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
607 PM MDT TUE AUG 13 2013

...RED FLAG WARNING FROM 2 PM THIS AFTERNOON TO 9 PM MDT
THURSDAY...

.DISCUSSION...HIGH PRESSURE OVER THE AREA WILL INTENSIFY OVER THE
NEXT SEVERAL DAYS. AIRMASS WILL CONTINUE TO DRY THROUGH THURSDAY
WITH CRITICALLY LOW AFTERNOON MINIMUM RELATIVE HUMIDITY VALUES AND
POOR OVERNIGHT RECOVERIES EXPECTED. TEMPERATURES WILL CLIMB
SLIGHTLY EACH OF THE NEXT TWO DAYS AS RIDGE BUILDS. OF NOTE IS
THAT HAINES INDEX VALUES OF 6 ARE EXPECTED ON WEDNESDAY AND
THURSDAY. THIS COMBINED WITH EXTREMELY LOW AFTERNOON RELATIVE
HUMIDITY READINGS AND HIGH TEMPERATURES MAY SUPPORT EXTREME FIRE
BEHAVIOR...WHICH HAS PROMPTED A RED FLAG WARNING THAT INCLUDES THE
BURN AREA. WINDS WILL PREDOMINANTLY BE TERRAN DRIVEN THROUGH
THURSDAY ALTHOUGH FLOW ALOFT INCREASES SLIGHTLY ON
WEDNESDAY...THEREFORE ANTICIPATE WINDS TO BE JUST A BIT HIGHER
THAN TODAY. WITH DRY AIRMASS IN PLACE THUNDERSTORMS ARE NOT
EXPECTED OVER THE NEXT TWO DAYS.

FORECAST BASED ON OBSERVATION FROM CEDAR MOUNTAIN RAWS SITE.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....62-66.
  MAX HUMIDITY........29-34 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO 15 MPH
                      EARLY THIS EVENING BECOMING SOUTH-SOUTHEAST/DOWNSLOPE
                      5 TO 10 MPH AFTER 2100 MDT.

.WEDNESDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....93-97.
  MIN HUMIDITY........6-10 PERCENT.
  WINDS - 20-FOOT.....SOUTH-SOUTHEAST/DOWNSLOPE 5 TO 10 MPH BECOMING
                      SOUTH-SOUTHWEST 8 TO 15 MPH WITH GUSTS TO 25 MPH
                      IN THE AFTERNOON.

.OUTLOOK FOR THURSDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......920.
  SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....94-98.
  MIN HUMIDITY........5-9 PERCENT.
  WINDS - 20-FOOT.....SOUTH-SOUTHEAST/DOWNSLOPE 5 TO 10 MPH BECOMING
                      SOUTH-SOUTHWEST 8 TO 15 MPH WITH GUSTS TO 25 MPH
                      IN THE AFTERNOON.

FORECASTER...GRAHAM
REQUESTED BY...IC
REASON FOR REQUEST...WILDFIRE
.TAG 20130813.PATCH.01/SLC

$$