FNUS75 KSLC 242017
FWSSLC

SPOT FORECAST FOR LAKE FORK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
217 PM MDT FRI JUL 24 2009

.DISCUSSION...HIGH PRESSURE ALOFT IS CENTERED NEAR THE FOUR
CORNERS THIS AFTERNOON. SOUTHERLY FLOW AROUND THIS HIGH IS
ALLOWING ABUNDANT MOISTURE TO STREAM NORTHWARD OUT OF
ARIZONA...AND INTO SOUTHERN AND CENTRAL UTAH. THIS MOISTURE
WILL CONTINUE TO SPREAD NORTHWARD THROUGH TONIGHT...WITH
SHOWERS AND THUNDERSTORMS EXPECTED TO DEVELOP LATE THIS
AFTERNOON THROUGH THIS EVENING. LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE WITH THE STRONGEST STORMS. WINDS ARE EXPECTED TO
REMAIN GENERALLY LIGHT AND DRIVEN BY SLOPE FLOWS...HOWEVER
THIS EVENING WINDS WILL INCREASINGLY BECOME DOMINATED MORE BY
THUNDERSTORM OUTFLOW. ADDITIONALLY...THIS INCREASE IN MOISTURE
SHOULD ALLOW FOR HIGHER MIN RH VALUES SATURDAY ALONG WITH
BETTER RECOVERY TONIGHT. SIMILAR CONDITIONS ARE EXPECTED AGAIN
SATURDAY INTO SATURDAY EVENING. NORTHWESTERLY FLOW ALOFT IS
EXPECTED TO SET UP ACROSS THE REGION SUNDAY THROUGH THE FIRST
HALF OF THE UPCOMING WEEK ALLOWING FOR A GRADUAL DRYING TREND.

.REST OF TODAY...
  LAL.................4.
  HAINES INDEX........2 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT CLOUD COVER).
                      SCATTERED SHOWERS AND THUNDERSTORMS.
  MAX TEMPERATURE.....90-92.
  MIN HUMIDITY........24-27 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 3-7 MPH. GUSTY ERRATIC WINDS
                      NEAR THUNDERSTORMS.

.TONIGHT...
  LAL.................4 UNTIL MIDNIGHT...THEN 2.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT CLOUD COVER)
                      UNTIL MIDNIGHT...THEN PARTLY CLOUDY (50-60
                      PERCENT CLOUD COVER). A CHANCE OF SHOWERS AND
                      THUNDERSTORMS UNTIL MIDNIGHT...THEN A SLIGHT
                      CHANCE OF SHOWERS AND THUNDERSTORMS.
  MIN TEMPERATURE.....59-62.
  MAX HUMIDITY........73-76 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 3-7 MPH BECOMING NORTH/DOWNSLOPE
                      4-9 MPH AFTER 2000. GUSTY ERRATIC WINDS NEAR
                      THUNDERSTORMS.

.OUTLOOK FOR SATURDAY...
  LAL.................2 UNTIL NOON...THEN 4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......930.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
                      THE MORNING...THEN A CHANCE OF SHOWERS AND
                      THUNDERSTORMS IN THE AFTERNOON.
  MAX TEMPERATURE.....87-90.
  MIN HUMIDITY........27-30 PERCENT.
  WINDS - 20-FOOT.....NORTH/DOWNSLOPE 3-6 MPH BECOMING SOUTHWEST
                      3-6 MPH IN THE AFTERNOON.



FORECASTER...SEAMAN
REQUESTED BY...COLT MARTINSEN
REASON FOR REQUEST...WFU
.TAG 20090724.LAKEF.01/SLC

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