FNUS75 KSLC 201609
FWSSLC

SPOT FORECAST FOR ZION CANYON GRASS RX
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1009 AM MDT WED MAY 20 2009

.DISCUSSION...A SOMEWHAT MOIST AND UNSTABLE AIRMASS WILL REMAIN
ACROSS SOUTHERN UTAH TODAY WITH SOUTH WINDS AHEAD OF A COLD FRONT.
THE FRONT WILL STALL AND WEAKEN NORTH OF THE BURN SITE. MOISTURE
WILL INCREASE FROM THE SOUTH TOMORROW AS A VERY WEAK STORM SYSTEM
MOVES ACROSS NORTHERN ARIZONA. SHOWERS AND THUNDERSTORMS WILL
MAINLY BE CONFINED TO THE HIGH TERRAIN NEAR THE BURN SITE
TODAY...BUT A NORTHEAST FLOW ALOFT TOMORROW COULD BRING A BETTER
CHANCE OF SHOWERS/THUNDERSTORMS FOR TOMORROW AFTERNOON. CHANCE OF
WETTING RAIN WILL BE LOW TODAY BUT INCREASE A BIT FOR TOMORROW.
MIXING CONDITIONS WILL BE GOOD TO EXCELLENT THROUGH THE END OF THE
WEEK.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS AFTER
                      NOON.
  MAX TEMPERATURE.....91-94.
  MIN HUMIDITY........10-13 PERCENT.
  WINDS - 20-FOOT.....NORTHEAST WINDS 10 TO 14 MPH WITH GUSTS TO
                      25 MPH UNTIL 1100...THEN BECOMING SOUTHWEST
                      5 TO 10 MPH INCREASING TO 8 TO 12 MPH WITH
                      GUSTS TO 22 MPH AFTER 2000.

.TONIGHT...
  LAL.................2.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (65-75 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....60-63.
  MAX HUMIDITY........34-38 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 8 TO 12 MPH WITH GUSTS TO
                      22 MPH SHIFTING TO THE NORTHEAST 5 TO 10 MPH
                      AFTER 2100...THEN INCREASING TO 10 TO 14 MPH
                      WITH GUSTS TO 25 MPH AFTER MIDNIGHT.

.OUTLOOK FOR THURSDAY...
  LAL.................2 UNTIL NOON...THEN 3.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS IN THE
                      MORNING...THEN WIDELY SCATTERED SHOWERS AND
                      THUNDERSTORMS.
  MAX TEMPERATURE.....86-89.
  MIN HUMIDITY........18-22 PERCENT.
  WINDS - 20-FOOT.....NORTHEAST WINDS 10 TO 14 MPH WITH GUSTS TO TO
                      25 MPH SHIFTING TO THE WEST 5 TO 10 MPH IN
                      THE AFTERNOON.


FORECASTER...CHENG
REQUESTED BY...TAIGA ROHRER
REASON FOR REQUEST...PRESCRIBED
.TAG 20090520.ZIONC.01/SLC

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