SPOT FORECAST FOR KNIGHT...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
915 AM PDT WED AUG 5 2009

FORECAST IS BASED ON REQUEST TIME OF 0812 PDT ON AUGUST 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

#173-09

...FIRE WEATHER WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY EVENING FOR LIGHTNING...

.DISCUSSION...
AN UNSEASONABLY STRONG UPPER LOW PRESSURE SYSTEM WILL APPROACH THE
COAST TODAY INTO TONIGHT...MOVING THROUGH ON THURSDAY. THE LOW WILL
INCREASE THE THREAT OF THUNDERSTORMS OVER THE FIRE AREA THURSDAY.
ALTHOUGH WETTING RAINS ARE EXPECTED THE POTENTIAL EXISTS FOR STORMS
WITH SIGNIFICANT AMOUNTS OF LIGHTNING. OTHERWISE THE LOW WILL WILL
BRING BREEZY SOUTHERLY WIND TODAY AND TONIGHT WITH MUCH COOLER
TEMPERATURES THURSDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....78-84.
MIN HUMIDITY........27 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....VARIABLE WIND TO 5 MPH BECOMING SOUTHWEST 5 TO 10
MPH
                    IN THE AFTERNOON.
   RIDGETOP.........SOUTH AROUND 14 MPH WITH GUSTS TO 25 MPH IN THE
                    AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
MIXING HEIGHT.......500-1700 FT AGL INCREASING TO 7500-7800 FT AGL.
MIXING WINDS........SOUTH AROUND 14 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....55-60.
MAX HUMIDITY........57-68 PERCENT LOWER ELEVATIONS...45-50 PERCENT
                    HIGHER ELEVATIONS.
WIND (20 FT)........
   SLOPE/VALLEY.....WEST WINDS 4 TO 9 MPH IN THE EVENING BECOMING
                    SOUTHEAST 1 TO 4 MPH AFTER 9 PM.
   RIDGETOP.........SOUTH 10 TO 15 MPH WITH LOCAL GUSTS TO 25 MPH
                    IN THE EVENING.
CWR.................0 PERCENT.
LAL.................1.
MIXING HEIGHT.......7800 FT AGL DECREASING TO 400-500 FT AGL.
MIXING WINDS........SOUTH AROUND 8 MPH.

.THURSDAY...

SKY/WEATHER.........BECOMING PARTLY CLOUDY WITH A CHANCE OF
THUNDERSTORMS...
                    MAINLY IN THE AFTERNOON.
MAX TEMPERATURE.....60-69.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....LIGHT WINDS BECOMING SOUTHWEST 4 TO 9 MPH IN
                    THE AFTERNOON.
   RIDGETOP.........SOUTH AROUND 12 MPH.
CWR.................40 PERCENT.
LAL.................3.
MIXING HEIGHT.......INCREASING TO AROUND 5000 FT AGL IN THE
AFTERNOON.
MIXING WINDS........SOUTH AROUND 12 MPH.


FORECASTER...PCH
REQUESTED BY...BYRON KIMBALL
REASON FOR REQUEST...WILDFIRE