FNUS76 KOTX 221301
FWSOTX

SPOT FORECAST FOR SWAKANE...CWICC
NATIONAL WEATHER SERVICE SPOKANE WA
601 AM PDT THU JUL 22 2010

FORECAST IS BASED ON REQUEST TIME OF 2052 PDT ON JULY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
...STRONG WINDS AND LOW RELATIVE HUMIDITY LEVELS EXPECTED TODAY...

A STRONG UPPER LEVEL DISTURBANCE WILL PUSH A DRY COLD FRONT
THROUGH THE FIRE TODAY. THIS FRONT WILL RESULT IN STRONG NORTHWEST
WINDS BY MIDDAY AND FALLING RELATIVE HUMIDITY LEVELS. THE COMBINATION
OF THE WIND AND LOW RELATIVE HUMIDITY COULD RESULT IN SPOTTING
AND ENHANCED FIRE ACTIVITY WITHIN THE PERIMETER OF THE FIRE.
WINDS WILL BEGIN TO RECEDE OVERNIGHT AND REMAIN LIGHT THROUGH THE
WEEKEND. MEANWHILE THERMAL RIDGING WILL BUILD OVER THE AREA...RESULTING
IN THE HOTTEST CONDITIONS SO FAR THIS YEAR. RELATIVE HUMIDITY LEVELS
WILL DROP SIGNIFICANTLY WHILE ATMOSPHERIC STABILITY WILL
ALSO BEGIN TO DECREASE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. BECOMING WINDY BY MIDDAY
CWR.................0 PERCENT.
MAX TEMPERATURE.....71-76 AT TOP OF FIRE TO 83-87 AT BASE.
MIN HUMIDITY........24 PERCENT AT BASE TO 33 PERCENT AT TOP.
WIND (20 FT)........VALLEY WIND WEST TO NORTHWEST 4 TO 8 MPH
                    THIS MORNING...INCREASING TO 12 TO 17 MPH
                    IN THE AFTERNOON WITH GUSTS TO 27 MPH.
                    RIDGETOP WIND WEST TO NORTHWEST 5 TO 10
                    MPH THIS MORNING...INCREASING TO 18 TO
                    24 MPH IN THE AFTERNOON WITH GUSTS TO
                    40 MPH. .
MIXING HEIGHT.......NEAR SURFACE IN THE MORNING...BECOMING 3000 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST TO NORTHWEST 20 TO 30 MPH.
LAL.................1.
HAINES INDEX........3 VERY LOW.

.TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....48 AT BASE OF FIRE TO 56 AT TOP
MAX HUMIDITY........45 PERCENT AT RIDGE TOP TO 60 PERCENT VALLEYS.
WIND (20 FT)........NORTHWEST WINDS 15 TO 20 MPH. GUSTS UP TO 35
                    MPH IN THE EVENING. WIND DECREASING TO
                    3 TO 7 MPH OVERNIGHT.
MIXING HEIGHT.......4000 FT AGL IN THE EVENING...BECOMING NEAR
                    SURFACE OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST 20 TO 26 MPH.
LAL.................1.
HAINES INDEX........4 LOW.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....76-84.
MIN HUMIDITY........21-31 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 9 MPH IN THE MORNING
                    BECOMING UPSLOPE 2 TO 5 MPH IN THE AFTERNOON.
MIXING HEIGHT.......NEAR SURFACE IN THE MORNING...BECOMING 5000 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 3 TO 7 MPH.
LAL.................1.
HAINES INDEX........3 VERY LOW.

$$
FORECASTER...FX
REQUESTED BY...JEFF BOUSCHOR  IC3 T
TYPE OF REQUEST...WILDFIRE
.TAG 20100721.SWAKA.02/OTX