FNUS76 KEKA 010605
FWSEKA

SPOT FORECAST FOR LAST CHANCE...USFS LOWER TRINITY
NATIONAL WEATHER SERVICE EUREKA CA
1105 PM PDT WED SEP 30 2009

FORECAST IS BASED ON IGNITION TIME OF 1330 PDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN EUREKA AT (707) 443-6484.

.DISCUSSION...
WEAK HIGH PRESSURE WILL BUILD OVER NORCAL BEFORE ANOTHER UPPER
LEVER TROUGH AND ASSOCIATED MARINE PUSH APPROACHES THE COAST
LATE FRIDAY AFTERNOON AND FRIDAY NIGHT. A SUBTLE RISE IN TEMPERATURES
ALONG WITH SLIGHTLY DRIER CONDITIONS ARE EXPECTED THROUGH FRIDAY
AFTERNOON. LIGHT SHOWERS ARE POSSIBLE SATURDAY AND EARLY SUNDAY OVER
THE BURN AREA BUT ANY RAIN THAT DOES FALL WILL BE VERY MINIMAL (<.05).

SUNDAY WILL SEE THE BEGINNING OF A FAIRLY LONG STRETCH OF WARMER AND
MUCH DRIER PATTERN AS STRONGER HIGH PRESSURE BUILDS AND A PROLONGED
PERIOD OF LIGHT EAST AND NORTHEAST WINDS PERSISTS THROUGH WEDNESDAY
OR THURSDAY.

NOTE: FORECAST VALUES BELOW ARE FOR ELEVATIONS AROUND 4500 FT.

.THURSDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 69 TO 73.
MIN HUMIDITY........21 TO 26 PERCENT.
EYE LEVEL WINDS.....UPSLOPE OR NORTHWEST WINDS 5 TO 6 MPH.
SURROUNDING RIDGE...NORTH AND NORTHWEST 7 TO 10 MPH.
MIXING HEIGHT.......300-1200 FT AGL INCREASING TO 3900 FT AGL EARLY
                    IN THE AFTERNOON...THEN DECREASING TO 1200 FT
                    AGL LATE IN THE AFTERNOON.
MIXING WINDS........NORTH AROUND 12 MPH.

$$
FORECASTER...TONKIN
REQUESTED BY...DAN WOODEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090930.LASTC.01/EKA