FNUS75 KSLC 191455
FWSSLC

SPOT FORECAST FOR PRETTY TREE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
855 AM MDT WED MAY 19 2010

.DISCUSSION...HIGH PRESSURE ALOFT WILL STRENGTHEN ACROSS SOUTHERN
UTAH TODAY. RESIDUAL MOISTURE WILL LEAD TO BUILDUPS OVER THE
SURROUNDING HIGHER TERRAIN...WITH NO REAL THREAT FOR WETTING RAINS
THIS AFTERNOON. RAPID CLEARING WILL FOLLOW THIS EVENING. A WEAK
COLD FRONT WILL APPROACH NORTHERN UTAH THURSDAY. THIS FRONT WILL
BRING IN DRIER AIR AND STRONGER WINDS ACROSS SOUTHERN UTAH THURSDAY.
THE FRONT SHOULD REMAIN JUST TO THE NORTH OF THE FIRE SITE THURSDAY
NIGHT...THEN RETREAT BACK TO THE NORTH ON FRIDAY. THE NEXT PACIFIC
STORM SYSTEM REACHING THE WEST COAST FRIDAY WILL RESULT IN STRONG
SOUTHWEST WINDS AND LOW RH VALUES FRIDAY AND SATURDAY. INCREASING
MOISTURE SUNDAY COULD RESULT IN HIGH-BASED THUNDERSTORMS OVER/NEAR
THE SITE SUNDAY.

.TODAY...
LAL...................1.
HAINES INDEX..........3 ..VERY LOW.
CLEARING INDEX........800.
SKY/WEATHER...........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER).
MAX TEMPERATURE.......58-60.
MIN HUMIDITY..........30-32 PERCENT.
WIND (20 FT)..........NORTH NORTHWEST WINDS 5 TO 10 MPH...INCREASING
                      TO 16 TO 22 MPH AFTER 1100.

.TONIGHT...
LAL...................1.
HAINES INDEX..........3 ..VERY LOW.
SKY/WEATHER...........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER)
                      UNTIL 2100...THEN MOSTLY CLEAR (5-15 PERCENT
                      CLOUD COVER).
MIN TEMPERATURE.......38-41.
MAX HUMIDITY..........62-66 PERCENT.
WIND (20 FT)..........NORTH NORTHWEST WINDS 10 TO 15 MPH...BECOMING
                      4 TO 9 MPH AFTER 2300.

.OUTLOOK FOR THURSDAY...
LAL...................1.
HAINES INDEX..........5 ..MODERATE.
CLEARING INDEX........1000+.
SKY/WEATHER...........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
MAX TEMPERATURE.......66-69.
MIN HUMIDITY..........18-20 PERCENT.
WIND (20 FT)..........WEST WINDS 8 TO 12 MPH INCREASING TO 18 TO 25
                      MPH DURING THE AFTERNOON.



FORECASTER...CONGER
REQUESTED BY...Gregg Christensen
REASON FOR REQUEST...PRESCRIBED
.TAG 20100519.PRETT.01/SLC

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