277
FNUS75 KSLC 252233
FWSSLC
SPOT FORECAST FOR GRASSY TRAIL
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
433 PM MDT SAT MAY 25 2013
DISCUSSION
A WARM DRY SOUTHWEST FLOW WILL CONTINUE OVER THE
FIRE SITE TONIGHT THROUGH SUNDAY. THE GUSTY SOUTHWEST WINDS WILL
DROP OFF AFTER ABOUT 1900 TO 2000 THIS EVENING THEN PICK UP AGAIN
SUNDAY AROUND ABOUT 1100. HUMIDITY WILL HAVE POOR OVERNIGHT
RECOVERY AND FALL TO NEAR OR BELOW 15 PERCENT AGAIN SUNDAY.
A PACIFIC WEATHER SYSTEM WILL BEGIN TO APPROACH THE AREA MONDAY
BRINGING A SLIGHT CHANCE OF HIGH BASED MOSTLY DRY THUNDERSTORMS
AND THEIR ASSOCIATED STRONG AND ERRATIC GUSTY WINDS TO THE FIRE
SITE MONDAY AFTERNOON AND EVENING. A COLD FRONT FOR TUESDAY WILL
BRING INCREASING SOUTH WINDS AHEAD OF IT AND A WIND SHIFT WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS BY LATE IN THE DAY...
CONTINUING OVERNIGHT INTO WEDNESDAY. WETTING RAIN IS POSSIBLE
WITH SOME OF THESE SHOWERS LATE TUESDAY THROUGH WEDNESDAY.
TONIGHT
LAL.................1.
HAINES INDEX........5 ..MODERATE.
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT CLOUD COVER).
MIN TEMPERATURE.....40.
MAX HUMIDITY........25-27 PERCENT.
WINDS - 20-FOOT.....SOUTHWEST WINDS 10-20 MPH DECREASING TO 5 TO 10
MPH IN THE LATE EVENING AND OVERNIGHT.
SUNDAY
LAL.................1.
HAINES INDEX........6 ..HIGH.
CLEARING INDEX......1000+.
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
MAX TEMPERATURE.....63-65.
MIN HUMIDITY........11-13 PERCENT.
WINDS - 20-FOOT.....SOUTH WINDS 5 MPH INCREASING TO SOUTHWEST 15
TO 20 MPH IN THE LATE MORNING AND AFTERNOON.
OUTLOOK FOR MONDAY
LAL.................1 UNTIL NOON...THEN 2.
HAINES INDEX........5 ..MODERATE.
CLEARING INDEX......1000+.
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER) THEN
BECOMING PARTLY CLOUDY (45-55 PERCENT CLOUD
COVER). A SLIGHT CHANCE OF HIGH BASED SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....62-64.
MIN HUMIDITY........15-17 PERCENT.
WINDS - 20-FOOT.....SOUTHWEST WINDS 15 MPH. BRIEF ERRATIC GUSTS
TO 50 MPH POSSIBLE NEAR ANY SHOWERS.
FORECASTER...WILENSKY
REQUESTED BY...MIFC
REASON FOR REQUEST...WILDFIRE
.TAG 20130525.GRASS.01/SLC
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