FNUS75 KSLC 181754
FWSSLC

SPOT FORECAST FOR STRONGS PEAK RX
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1154 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 AFTERNOON. TIMING OF
COLD FRONT HAS SPED UP VS. EARLIER FORECAST WITH BEST BET FOR
FRONTAL PASSAGE NOW FALLING IN THE 1400 TO 1700 WINDOW. FRONTAL
TIMING IS SIGNIFICANT FOR SATURDAYS FORECAST REGARDING WINDS AND
RH...

SOUTHERLY WINDS ALOFT AND AT THE SURFACE WILL TREND TO INCREASE
STARTING THIS AFTERNOON. WINDS LOOK TO REMAIN ELEVATED OVERNIGHT
TONIGHT...WITH A NET INCREASE AGAIN ON SATURDAY. HIGHEST WIND
SPEEDS SHOULD COME JUST PRIOR TO FRONTAL PASSAGE LATE MORNING
TOMORROW.

ELEVATED WINDS 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 NOW AND 1600 THIS AFTERNOON...AND
COINCIDENT WITH THE STRONGEST SOUTHERLY WINDS TOMORROW IN THE
LATE MORNING THROUGH MIDDAY PERIOD. ADDITIONALLY...ANTICIPATING
POOR RECOVERY OF RH TONIGHT DUE TO ELEVATED SOUTH WINDS.

THE COLD FRONT IS EXPECTED TO BRING WETTING PRECIP TOMORROW
EVENING/NIGHT.

.TODAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......950.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN PARTLY CLOUDY (50-60
                      PERCENT CLOUD COVER).
  MAX TEMPERATURE.....48-52.
  MIN HUMIDITY........21-25 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 5 TO 10 MPH INCREASING TO
                      SOUTHEAST 8 TO 15 GUSTING TO 20 MPH BY
                      MID AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....32-35.
  MAX HUMIDITY........35-42 PERCENT. WINDS SHOULD KEEP RECOVERY
                      ON THE POOR SIDE
  WINDS - 20-FOOT.....SOUTHEAST WINDS 10 TO 20 MPH.

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER)
                      THEN BECOMING CLOUDY (95-100 PERCENT CLOUD
                      COVER). A SLIGHT CHANCE OF RAIN SHOWERS IN
                      THE LATE MORNING...THEN A CHANCE OF RAIN
                      AND SNOW SHOWERS IN THE AFTERNOON.
  MAX TEMPERATURE.....47-49 BY MIDDAY THEN COOLING
  MIN HUMIDITY........22-29 PERCENT BY LATE MORNING THEN RECOVERING.
  WINDS - 20-FOOT.....VERY WINDY. SOUTH WINDS INCREASING TO 25 TO
                      35 MPH WITH GUSTS TO AROUND 45 MPH BY
                      MIDDAY...SHIFTING TO THE WEST AND DECREASING
                      TO 10 TO 20 MPH IN THE AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...DAN O CONNOR
REASON FOR REQUEST...PRESCRIBED
.TAG 20110318.STRON.01/SLC

$$