FNUS75 KSLC 151343
FWSSLC

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

.DISCUSSION...A MINOR UPPER LEVEL CIRCULATION NEARING THE
NEVADA/UTAH BORDER TO YOUR SOUTHWEST THIS MORNING WILL TREK ACROSS
THE BURN SITE THIS AFTERNOON. THIS FEATURE WILL CAUSE A SLIGHT
DESTABILIZATION OF THE AIR MASS PROMOTING THE GROWTH OF BUILDUPS
AND POSSIBLE HIGH BASE THUNDERSTORMS THIS AFTERNOON. WINDS WILL
SHIFT FROM SOUTHWEST TO WEST NORTHWEST BEHIND THIS FEATURE
BETWEEN 1600 AND 1700 MDT. THIS WEST NORTHWEST FLOW WILL BE
TEMPORARY AS A STRONGER TROUGH WILL APPROACH THURSDAY WHICH WILL
INCREASE THE SOUTHWEST FLOW THURSDAY AFTERNOON THROUGH FRIDAY.

NOTE: THE DEW POINT SENSOR ON THE BRYCE CANYON RAWS IS SHOWING
ERRATIC READINGS AND CAN NOT BE TRUSTED AT THIS TIME. USED A BLEND
OF NEARBY RAWS TO CALCULATE RH FORECAST.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (30-50 PERCENT CLOUD COVER).
                      A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      AFTER NOON.
  MAX TEMPERATURE.....65-67.
  MIN HUMIDITY........13-15 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH UNTIL 1000 MDT THEN
                      INCREASING TO 10-15 MPH BY 1100-1200 AND 15-20
                      MPH IN THE EARLY AFTERNOON. AFTER A COOL FRONT
                      PASSAGE AT ABOUT 1600-1700 MDT WINDS WILL SHIFT
                      WEST NORTHWEST AT 15-20 MPH FOR THE REMAINDER
                      OF THE DAY.

.TONIGHT...
  LAL.................2 UNTIL 2100...THEN 1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                      UNTIL 2100.
  MIN TEMPERATURE.....43-45.
  MAX HUMIDITY........42-44 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 20 MPH DECREASING TO 10 TO 15 MPH
                      IN THE LATE EVENING AND OVERNIGHT.

.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).
  MAX TEMPERATURE.....70.
  MIN HUMIDITY........13-15 PERCENT.
  WINDS - 20-FOOT.....BREEZY. SOUTHWEST WINDS 10 TO 15 MPH
                      INCREASING TO 20 TO 25 MPH IN THE AFTERNOON.



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

$$