FNUS75 KSLC 171212
FWSSLC

SPOT FORECAST FOR BOX CREEK RX
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
612 AM MDT THU MAY 17 2012

.DISCUSSION...BONE DRY CONDITIONS WITH INCREASING WINDS ARE
EXPECTED FOR TODAY AHEAD OF AN APPROACHING PACIFIC STORM SYSTEM.
DEEP MIXING POTENTIAL IS EXPECTED THIS AFTERNOON AS INSTABILITY
AND SOUTHWESTERLY FLOW ALOFT INCREASE...BUT THE APPROACH OF A
STRENGTHENING COLD FRONT WILL TREND TO RAMP NEAR SURFACE WINDS UP
SIGNIFICANTLY THIS AFTERNOON THROUGH TONIGHT...GUSTS IN EXCESS OF
40 MPH LOOK LIKELY. THE FRONT WILL PASS THROUGH THE BURN AREA
DURING THE MORNING HOURS FRIDAY SWITCHING WINDS FROM SOUTH TO
NORTHWEST WITH A GRADUAL NET DECREASING TREND IN SPEEDS.
INSTABILITY WILL REMAIN IN PLACE SATURDAY ALLOWING GOOD CLEARING
INDICES...BUT MIXING HEIGHTS WILL BE GRADUALLY LOWERING AS HIGH
PRESSURE BUILDS INTO THE AREA FOR SUNDAY. EVEN WITH LOWERING
MIXING HEIGHTS AND DECREASING WINDS ALOFT CLEARING SHOULD REMAIN
SUITABLE SUNDAY AND NEAR SURFACE WINDS SHOULD BE TRENDING MUCH
LIGHTER WHILE FOLLOWING TYPICAL DIURNAL PATTERNS IN DIRECTION.
HIGH PRESSURE WILL REMAIN IN PLACE INTO EARLY NEXT WEEK.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN PARTLY CLOUDY (60-70
                      PERCENT CLOUD COVER). A SLIGHT CHANCE OF
                      SHOWERS AND THUNDERSTORMS AFTER NOON.
  MAX TEMPERATURE.....63-65.
  MIN HUMIDITY........7-10 PERCENT.
  WINDS - 20-FOOT.....BREEZY. SOUTHWEST WINDS 15 MPH INCREASING TO
                      25 MPH WITH GUSTS TO AROUND 40 MPH IN THE
                      AFTERNOON.

.TONIGHT...
  LAL.................2 UNTIL MIDNIGHT...THEN 1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF THUNDERSTORMS UNTIL
                      MIDNIGHT.
  MIN TEMPERATURE.....44-49.
  MAX HUMIDITY........29-31 PERCENT.
  WINDS - 20-FOOT.....BREEZY. SOUTHWEST WINDS 15-25 MPH. GUSTS UP TO
                      40 MPH EARLY IN THE EVENING THEN DECREASING.

.OUTLOOK FOR FRIDAY...
  LAL.................1 UNTIL NOON...THEN 5.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER)
                      THEN BECOMING MOSTLY CLOUDY (75-85 PERCENT
                      CLOUD COVER). A CHANCE OF SHOWERS IN THE
                      MORNING...THEN OCCASIONAL SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....51-53.
  MIN HUMIDITY........21-23 PERCENT.
  WINDS - 20-FOOT.....WINDY. BECOMING NORTHWEST 10 TO 20 MPH
                      WITH GUSTS TO TO 30 MPH IN THE AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...RYAN MCCOLLIN
REASON FOR REQUEST...PRESCRIBED
.TAG 20120517.BOXCR.01/SLC

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