FNUS75 KSLC 230147
FWSSLC

SPOT FORECAST FOR TWITCHELL
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
747 PM MDT THU JUL 22 2010

.DISCUSSION...A WEATHER SYSTEM WHICH PASSED NORTH OF THE AREA
HAS HELPED PUSH A MUCH DRIER AIRMASS INTO WESTERN UTAH. THIS
DRY AIR WILL CONTINUE TO SPREAD ACROSS THE BURN AREA
TONIGHT..AND REMAIN IN PLACE FRIDAY THROUGH MUCH OF THE
UPCOMING WEEKEND.

MEANWHILE HIGH PRESSURE ALOFT WILL STRENGTHEN ACROSS
THE AREA FRIDAY...THEN REMAIN IN PLACE THROUGH THE UPCOMING
WEEKEND. AS A RESULT WINDS WILL GENERALLY REMAIN LIGHT AND
DRIVEN BY SLOPE FLOWS. HIGH BASED MOISTURE LOOKS TO SLOWLY
CREEP NORTHWARD DURING THE UPCOMING WEEKEND. THIS MAY ALLOW
FOR A FEW AFTERNOON BUILDUPS SATURDAY...AND PERHAPS A
THUNDERSTORM OR TWO BY SUNDAY AFTERNOON.

.TONIGHT...
LAL...................1.
HAINES INDEX..........6 ..HIGH.
SKY/WEATHER...........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER).
MIN TEMPERATURE.......NEAR 50.
MAX HUMIDITY..........57-60 PERCENT.
WIND (20 FT)..........NORTH/DOWNSLOPE 3-8 MPH.

.FRIDAY...
LAL...................1.
HAINES INDEX..........6 ..HIGH.
CLEARING INDEX........790.
SKY/WEATHER...........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
MAX TEMPERATURE.......NEAR 80.
MIN HUMIDITY..........18-21 PERCENT.
WIND (20 FT)..........SOUTHWEST/UPSLOPE 6-12 MPH.

.OUTLOOK FOR SATURDAY...
LAL...................1.
HAINES INDEX..........6 ..HIGH.
CLEARING INDEX........580.
SKY/WEATHER...........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER)
                      BECOMING PARTLY CLOUDY (35-45 PERCENT CLOUD
                      COVER) AFTER 1200.
MAX TEMPERATURE.......NEAR 80.
MIN HUMIDITY..........20-23 PERCENT.
WIND (20 FT)..........SOUTHWEST/UPSLOPE 4-9 MPH.



FORECASTER...SEAMAN
REQUESTED BY...JAMESON
REASON FOR REQUEST...WILDFIRE
.TAG 20100722.TWITC.01/SLC

$$