FNUS75 KSLC 121646
FWSSLC

SPOT FORECAST FOR LYDIAS CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1046 AM MDT WED AUG 12 2009

.DISCUSSION...HIGH PRESSURE WILL REMAIN THE DOMINANT
WEATHER FEATURE ACROSS THE REGION THROUGH THE END OF THE
WEEK BEFORE SHIFTING EAST. MOISTURE ROTATING AROUND THE HIGH
HAS SURGED INTO THE SOUTHERN THIRD OF THE STATE OVERNIGHT
AND WILL INCREASE THE POTENTIAL FOR ISOLATED SHOWER AND STORM
DEVELOPMENT IN THE VICINITY OF LYDIAS AFTER MIDDAY. BRIEF
AND ERRATIC WIND GUSTS AND DRY LIGHTNING ARE CONCERNS WITH
ANY PASSING STORM THIS AFTERNOON. OUTSIDE OF STORM WIND
POTENTIAL...TYPICAL DIURNAL SLOPE FLOW WILL DOMINATE THE
SITE OVER THE NEXT 24 HOURS. MOISTURE TRENDS WILL CONTINUE
TO INCREASE THROUGH THURSDAY INCREASING THE AREAL EXTENT
OF SHOWERS AND STORMS THROUGH THE DAY. THAT SAID...BONE DRY
LOW LEVELS WILL REMAIN IN PLACE ALLOWING GUSTY ERRATIC WIND
AND ISOLATED DRY LIGHTNING STRIKES TO CONTINUE. THE APPROACH
OF YET ANOTHER COLD FRONT OVER NORTHERN UTAH WILL SHUNT
MOISTURE EAST FRIDAY INCREASING DRY SOUTHWESTERLY FLOW
LOCALLY.



.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......860.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS.
  MAX TEMPERATURE.....76-80.
  MIN HUMIDITY........11-15 PERCENT.
  WINDS - 20-FOOT.....SOUTH 10 TO 15 MPH MID DAY AND THROUGH
                      THE IN THE AFTERNOON. BRIEF ERRATIC WIND
                      GUSTS WITH ANY PASSING STORM.

.TONIGHT...
  LAL.................2.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....54-56.
  MAX HUMIDITY........48-50 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 4 TO 7 MPH THROUGH 9 PM THEN
                      BECOMING DOWNSLOPE 5 TO 10 MPH.

.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 SCATTERED SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....75-79.
  MIN HUMIDITY........17-22 PERCENT.
  WINDS - 20-FOOT.....DOWNSLOPE 3 TO 6 MPH THROUGH 10 AM THEN
                      BECOMING SOUTHWEST 5 TO 10 MPH THROUGH NOON.
                      SOUTH 7 TO 12 WITH GUSTS TO 25 MPH IN THE
                      AFTERNOON. BRIEF ERRATIC WIND GUSTS WITH ANY
                      PASSING SHOWER.



FORECASTER...MERRILL
REQUESTED BY...WEST ZONE
REASON FOR REQUEST...WILDFIRE
.TAG 20090812.LYDIA.01/SLC

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