FNUS76 KSEW 182138
FWSSEW

SPOT FORECAST FOR HOPPER FIRE...NPS OLYMPIC
NATIONAL WEATHER SERVICE SEATTLE WA
238 PM PDT WED AUG 18 2010

FORECAST IS BASED ON REQUEST TIME OF 1415 PDT ON AUGUST 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A MARINE LAYER OVER WESTERN WASHINGTON REMAINS BELOW
ABOUT 4000 FEET TODAY AND IS EXPECTED TO DEEPEN SOMEWHAT LATER
TONIGHT INTO THURSDAY. THIS MAY ALLOW FOR THE MARINE STRATUS TO SNEAK
FAR ENOUGH INTO THE INTERIOR TO MOVE INTO THE FIRE AREA. IF IT DOES
IT WILL BURN BACK THURSDAY FOR SUNNY SKIES. TEMPERATURES WILL BE A
BIT COOLER WITH SOMEWHAT HIGHER RH VALUES.

FRIDAY IS EXPECTED TO BE MORE LIKE TODAY WITH RESPECT TO SUNSHINE
AND TEMPERATURES. GENERALLY LIGHT TERRAIN DRIVEN WINDS OVERALL WITH A
LIGHT WEST TO SOUTHWEST WIND ACROSS THE RIDGES.

A FAIRLY DEEP AND COOL UPPER TROUGH WILL SETTLE OVER THE REGION THIS
WEEKEND FOR MUCH BELOW NORMAL TEMPERATURES...HIGHER HUMIDITIES AND A
CHANCE FOR A SHOWERS LATE SATURDAY NIGHT THROUGH SUNDAY. THIS TROUGH
WILL EXIT THE REGION MONDAY FOR A RETURN TO MORE SEASONAL
TEMPERATURES EARLY NEXT WEEK.

 FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10
 MINUTE AVERAGES REFLECTING RAWS WINDS.


 TEMPERATURE AND RH FORECASTS ARE FOR 2 BEAR CAMP AT 4457 FEET.
 THANKS FOR THE REMARKS. THEY ARE HELPFUL.


.TONIGHT...

SKY/WEATHER.........CLEAR THEN MARINE STRATUS MOVING UP THE
                    DRAINAGE AND POSSIBLY REACHING THE FIRE.
CWR.................0%.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 1 TO 4 MPH.
MIXING HEIGHT.......3300 FT AGL DECREASING TO 900 FT AGL LATE IN
                    THE EVENING.
TRANSPORT WINDS.....WEST TO SOUTHWEST 3 TO 5 MPH.
HAINES INDEX........4 OR LOW.
LAL.................1.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY TO MOSTLY SUNNY.
CWR.................0%.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........59 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 3 TO 5 MPH.
MIXING HEIGHT.......900 FT AGL INCREASING TO 4100 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....WEST AROUND 5 MPH.
HAINES INDEX........4 OR LOW.
LAL.................1.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
PARTLY TO MOSTLY CLOUDY. LOWS AROUND 50. HIGHS AROUND 65.
UPSLOPE/UPVALLEY 2 TO 5 MPH.
.SATURDAY...
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS AROUND 60.
UPSLOPE/UPVALLEY 2 TO 4 MPH.
.SUNDAY...
MOSTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN THE MID 40S. HIGHS IN
THE UPPER 50S. VARIABLE 1 TO 4 MPH.
.MONDAY...
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S.
UPSLOPE/UPVALLEY 2 TO 5 MPH.

$$
FORECASTER...CERNIGLIA
REQUESTED BY...LARRY NICKEY
TYPE OF REQUEST...WILDFIRE
.TAG 20100818.HOPPE.01/SEW