FNUS75 KSLC 260115
FWSSLC

SPOT FORECAST FOR TWITCHELL CANYON
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
715 PM MDT SUN JUL 25 2010

.DISCUSSION...THUNDERSTORM ACTIVITY IS EXPECTED TO REMAIN SOUTH
AND WEST OF THE BURN AREA THROUGH THE NIGHT...BUT DEBRIS CLOUDS
FROM THOSE AREAS OF CONVECTION MAY LINGER OVER THE BURN SITE.
EXPECT A TREND OF INCREASING HUMIDITIES AND DECREASING
TEMPERATURES OVER THE NEXT FEW DAYS AS MOISTURE SURGES INTO THE
AREA FROM ARIZONA AND NEVADA IN SOUTHWEST FLOW. WIDELY SCATTERED
TO SCATTERED THUNDERSTORMS SHOULD DEVELOP OVER THE BURN AREA
TOMORROW...THEN INCREASE IN COVERAGE FOR TUESDAY AND WEDNESDAY.
THE INITIAL ROUND OF THUNDERSTORMS MAY BE DRY AND PRODUCE GUSTY
WINDS AND LITTLE RAINFALL TOMORROW AFTERNOON...BUT THEY SHOULD
QUICKLY TRANSITION TO WET STORMS BY TOMORROW EVENING OR TUESDAY.
THE AIRMASS WILL GRADUALLY BEGIN TO DRY FROM THE WEST ON THURSDAY
BUT ENOUGH MOISTURE LOOKS TO LINGER FOR A CHANCE OF CONVECTION
THROUGH THE END OF THE WEEK.

.TONIGHT...
LAL...................1.
HAINES INDEX..........5 ..MODERATE.
SKY/WEATHER...........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER).
MIN TEMPERATURE.......56-59.
MAX HUMIDITY..........38-41 PERCENT.
WIND (20 FT)..........NORTHEAST WINDS WINDS 3 TO 6 MPH SHIFTING TO
                      SOUTHEAST AFTER MIDNIGHT.

.MONDAY...
LAL...................1 UNTIL NOON...THEN 4.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........1000+.
SKY/WEATHER...........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN MOSTLY CLOUDY (70-80
                      PERCENT CLOUD COVER). SCATTERED
                      THUNDERSTORMS AFTER NOON. SLIGHT CHANCE OF
                      WETTING RAIN.
MAX TEMPERATURE.......76-79.
MIN HUMIDITY..........26-29 PERCENT.
WIND (20 FT)..........SOUTHEAST WINDS 3 TO 6 MPH BECOMING SOUTHWEST
                      8 TO 12 MPH AFTER 1400.

.OUTLOOK FOR TUESDAY...
LAL...................2 UNTIL NOON...THEN 4.
HAINES INDEX..........4 ..LOW.
CLEARING INDEX........780.
SKY/WEATHER...........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER)
                      THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT
                      CLOUD COVER). ISOLATED SHOWERS AND
                      THUNDERSTORMS IN THE MORNING...THEN SCATTERED
                      SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.......71-74.
MIN HUMIDITY..........40-44 PERCENT.
WIND (20 FT)..........SOUTHEAST WINDS 3 TO 6 MPH BECOMING SOUTHWEST
                      5 TO 9 MPH IN THE AFTERNOON.



FORECASTER...CHENG
REQUESTED BY...RICHFIELD DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20100725.TWITC.02/SLC

$$