FNUS75 KSLC 212143
FWSSLC

SPOT FORECAST FOR HENRIE KNOLLS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
344 PM MDT FRI MAY 21 2010

.DISCUSSION...A BORAD UPPER LEVEL PACIFIC TROUGH WILL ENTER THE
WESTERN GREAT BASIN OVERNIGHT...THEN SETTLE OVER THE AREA FOR LATE
SATURDAY THROUGH MONDAY. THIS TROUGH WILL PRODUCE BREEZY AND DRY
CONDITIONS AT THE SITE UNTIL THE ASSOCIATED COLD FRONT REACHES THE
SITE LATE TONIGHT. WINDS WILL SHIFT TO THE NORTHWEST AND GRADUALLY
DECREASE WHILE BRINGING COOLER TEMPERATURES TO SOUTHWEST UTAH.

THE FRONT WILL STALL JUST SOUTH OF THE SITE SATURDAY MORNING...THEN
RETREAT NORTH AGAIN LATER ON SATURDAY. ISOLATED SHOWERS COULD FOCUS
ALONG THE FRONT...THOUGH NONE OF THESE SHOWERS ARE EXPECTED TO
PRODUCE WETTING RAINS. LOOKING AT A BETTER THREAT FOR PRECIPITATION
SUNDAY...WITH THE BEST THREAT SUNDAY NIGHT. THE TROUGH WILL EXIT
SOUTHWEST UTAH EARLY ON MONDAY.

.TONIGHT...
LAL...................1.
HAINES INDEX..........3 ..VERY LOW.
SKY/WEATHER...........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER
                      UNTIL 2200)...THEN PARTLY CLOUDY (35-45
                      PERCENT CLOUD COVER).
MIN TEMPERATURE.......39-42.
MAX HUMIDITY..........42-44 PERCENT.
WIND (20 FT)..........BREEZY. SOUTHWEST WINDS 12 TO 18 MPH WITH
                      GUSTS TO 32 MPH. WINDS BECOMING WEST NORTHWEST
                      10 TO 15 MPH WITH GUSTS TO 22 MPH AFTER 0300.

.SATURDAY...
LAL...................1.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS.
MAX TEMPERATURE.......47-50.
MIN HUMIDITY..........29-32 PERCENT.
WIND (20 FT)..........BREEZY. WEST SOUTHWEST WINDS 8 TO 12 MPH
                      WITH GUSTS TO 20 MPH. WINDS INCREASING TO
                      12 TO 16 MPH WITH GUSTS TO 24 MPH AFTER 1000.

.OUTLOOK FOR SUNDAY...
LAL...................2.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER).
                      ISOLATED SHOWERS AND AFTERNOON THUNDERSTORMS.
MAX TEMPERATURE.......53-6
MIN HUMIDITY..........24-27 PERCENT.
WIND (20 FT)..........BREEZY. SOUTH SOUTHWEST WINDS 8 TO 12 MPH
                      WITH GUSTS TO 20 MPH. WINDS INCREASING TO
                      14 TO 18 MPH WITH GUSTS TO 28 MPH AFTER 1000.



FORECASTER...CONGER
REQUESTED BY...Adam Soper
REASON FOR REQUEST...PRESCRIBED
.TAG 20100521.HENRI.02/SLC

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