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000
FNUS75 KSLC 151252
FWSSLC

SPOT FORECAST FOR AHLSTROM HOLLOW
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
652 AM MDT WED MAY 15 2013

.DISCUSSION...A WEAK WEATHER DISTURBANCE OVER SOUTHERN NEVADA EARLY
THIS MORNING WILL TRACK SLOWLY EATS ACROSS THE FIRE SITE THIS AFTERNOON.
THIS FEATURE WILL GENERATE CUMULUS BUILDUPS...WITH ISOLATED SHOWERS OR
EVEN A THUNDERSTORM TO MAINLY THE NORTH AND EAST OF THE SITE DURING THE
AFTERNOON.

THE BRYCE CANYON RAWS RH VALUES SEEM TOO LOW WHEN COMPARED TO SURROUNDING
SITES. THE RH VALUES STARTED TO DROP MID-EVENING AND STAYED DOWN THROUGH
THE REMAINDER OF THE NIGHT...MUCH LIKE THE NIGHT BEFORE. SUSPECT THAT RH
VALUES WILL RUN AT SIMILAR LEVELS TO TUESDAY...WITH ONLY SLIGHTLY BETTER
RECOVERIES TONIGHT WHEN COMPARED TO LAST NIGHT. A COLD FRONT APPROACHING
NORTHWEST UTAH THURSDAY NIGHT/FRIDAY WILL GENERATE INCREASINGLY STRONG
WEST-SOUTHWEST WINDS FOR FRIDAY. WARM TEMPERATURES AND LOW RH VALUES ARE
ANTICIPATED FOR FRIDAY. THE COLD FRONT WILL MOVE INTO SOUTHERN UTAH FRIDAY
NIGHT...BRINGING COOLER TEMPERATURES...MODESTLY HIGHER RH VALUES...AND
LITTLE OR NO THREAT FOR WETTING RAINS ON THE SITE.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN MOSTLY CLOUDY (70-80
                      PERCENT CLOUD COVER). A SLIGHT CHANCE OF
                      SHOWERS AFTER 0900...THEN A SLIGHT CHANCE OF
                      SHOWERS AND THUNDERSTORMS AFTER NOON.
  MAX TEMPERATURE.....69-72.
  MIN HUMIDITY........14-17 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH...BECOMING SOUTH-SOUTHEAST
                      8 TO 14 MPH WITH GUSTS 22 MPH AFTER 1000...THEN
                      BECOMING WEST-NORTHWEST 10 TO 15 MPH WITH GUSTS TO 22 MPH
                      IN THE AFTERNOON.

.TONIGHT...
  LAL.................2 UNTIL 2000...THEN 1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      UNTIL 2000.
  MIN TEMPERATURE.....39-42.
  MAX HUMIDITY........42-44 PERCENT.
  WINDS - 20-FOOT.....WEST-NORTHWEST WINDS 10 TO 15 MPH...BECOMING SOUTHWEST
                      5 TO 10 MPH AFTER 2200

.OUTLOOK FOR THURSDAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER) THEN
                      BECOMING PARTLY CLOUDY (55-65 PERCENT CLOUD
                      COVER). A SLIGHT CHANCE OF THUNDERSTORMS AFTER 1400.
  MAX TEMPERATURE.....70-74.
  MIN HUMIDITY........13-15 PERCENT.
  WINDS - 20-FOOT.....BREEZY. SOUTHWEST WINDS 10 TO 15 MPH INCREASING TO
                      18 TO 22 WITH GUSTS TO 28 MPH IN THE AFTERNOON.



FORECASTER...CONGER
REQUESTED BY...LYNDSAY FONGER
REASON FOR REQUEST...PRESCRIBED
.TAG 20130515.AHLST.01/SLC

$$