FNUS75 KSLC 101024
FWSSLC

SPOT FORECAST FOR HELLS HOLLOW
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
424 AM MDT WED OCT 10 2012

.DISCUSSION...DRY AND BREEZY CONDITIONS WILL DEVELOP AT THE
HELLS HOLLOW SITE ONCE AGAIN BEGINNING MID/LATE MORNING. LOW
LEVEL INVERSIONS ARE EXPECTED TO BREAK AGAIN AROUND 1000 ALLOWING
GOOD DISPERSION THROUGH LATE AFTERNOON. TRANSPORT WINDS WILL BE A
BIT STRONGER TODAY...AS WILL NEAR SURFACE WINDS ALLOWING CLEARING
VALUES TO TREND EXCELLENT FOR THE AFTERNOON. RH TRENDS ARE
GRADUALLY CLIMBING AND WILL CONTINUE TO DO SO OVER THE NEXT 48
HOURS. BETTER RECOVERY CAN BE EXPECTED TONIGHT VERSUS THE LAST
SEVERAL AS A RESULT.

A LOW PRESSURE SYSTEM OFF THE CALIFORNIA COAST WILL TURN INLAND
THURSDAY THEN WILL MOVE INTO THE EASTERN GREAT BASIN THURSDAY
NIGHT. A BAND OF RAIN IS EXPECTED TO DEVELOP OVER SOUTHERN UTAH
EARLY FRIDAY MORNING THEN SPREAD NORTH AND EAST DURING THE DAY AS
THE SYSTEM MOVES INTO SOUTHERN UTAH. THE BURN SITE LIES ON THE
NORTHERN PERIPHERY OF WETTING RAIN POTENTIAL AT THIS
TIME...THOUGH LATEST GUIDANCE HAS TRENDED A BIT MORE NORTH WITH
THIS RAIN BAND OVER THE LAST DAYS TIME. THIS SAID...LIGHT SHOWERS
LOOK LIKELY AT THE BURN SITE FRIDAY AFTERNOON WITH A 40 PERCENT
CHANCE OF WETTING RAINS OCCURRING FRIDAY AFTERNOON/NIGHT.

.TODAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....65-67.
  MIN HUMIDITY........14-19 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE 5 MPH BECOMING NORTHWEST 10-15 MPH
                      WITH GUSTS TO 20-25 MPH IN THE AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....40-42.
  MAX HUMIDITY........54-56 PERCENT.
  WINDS - 20-FOOT.....NORTHWEST WINDS 10 TO 15 MPH BECOMING
                      DOWNSLOPE 5 MPH AFTER 2200.

.OUTLOOK FOR THURSDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......750.
  SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER)
                      THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT
                      CLOUD COVER).
  MAX TEMPERATURE.....65-67.
  MIN HUMIDITY........22-24 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5 TO 10 MPH.



FORECASTER...MERRILL
REQUESTED BY...SCOTT ROBISON
REASON FOR REQUEST...PRESCRIBED
.TAG 20121010.HELLS.01/SLC

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