FNUS75 KSLC 181441
FWSSLC

SPOT FORECAST FOR BEAR RIVER DIKE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
841 AM MDT FRI MAR 18 2011

.DISCUSSION...SHORT WAVE RIDGING WILL CONTINUE TO BUILD ACROSS
THE STATE TODAY INTO TOMORROW. THIS AHEAD OF ANOTHER COLD FRONT
TIMED TO PASS THROUGH THE BURN SITE TOMORROW EVENING BETWEEN 1700
AND 1900. SOUTHERLY WINDS ALOFT AND AT THE SURFACE WILL TREND TO
INCREASE TODAY WITH LEVELS HIGHEST JUST PRIOR TO FRONTAL PASSAGE
TOMORROW AFTERNOON. THIS WILL ALLOW FOR GOOD MIXING AND
INCREASING TREND CI LEVELS OVER THE NEXT 36 HOURS. LOWEST RH
PERIODS ARE EXPECTED TO BE IN THE WINDOW BETWEEN 1400 AND 1700
THIS AFTERNOON...AND COINCIDENT WITH THE STRONGEST SOUTHERLY
WINDS TOMORROW AFTERNOON BETWEEN 1100 AND 1600. THE COLD FRONT IS
EXPECTED TO BRING WETTING RAINS TOMORROW EVENING/NIGHT.

.TODAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......800.
  SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....52-54.
  MIN HUMIDITY........34-39 PERCENT IN THE 1400-1700 WINDOW.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 5 TO 8 WITH GUSTS TO 15 MPH
                      THROUGH LATE THIS MORNING...THEN SHIFTING TO
                      THE SOUTH TO SOUTHWEST IN THE AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT CLOUD COVER)
                      UNTIL MIDNIGHT...THEN PARTLY CLOUDY (45-55
                      PERCENT CLOUD COVER).
  MIN TEMPERATURE.....36-38.
  MAX HUMIDITY........82-84 PERCENT.
  WINDS - 20-FOOT.....SOUTHEAST WINDS 8 TO 12 MPH WITH GUSTS TO
                      18 MPH DEVELOPING LATE NIGHT.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER)
                      THEN BECOMING MOSTLY CLOUDY (80-90 PERCENT
                      CLOUD COVER). A CHANCE OF SHOWERS AFTER 1600.
  MAX TEMPERATURE.....57-59.
  MIN HUMIDITY........30-35 PERCENT IN THE 1100-1600 WINDOW.
  WINDS - 20-FOOT.....SOUTH WINDS 10 TO 15 MPH INCREASING TO 15 TO
                      25 MPH WITH GUSTS TO 35 MPH IN THE EARLY
                      AFTERNOON. A NORTHWEST WIND SWITCH COULD COME
                      AS EARLY AS 1600.



FORECASTER...MERRILL
REQUESTED BY...TRACY SWENSON
REASON FOR REQUEST...PRESCRIBED
.TAG 20110318.BEARR.01/SLC

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