Suppression Forecast
Issued by NWS Seattle/Tacoma, WA

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000
FNUS76 KSEW 270333
FWSSEW

SPOT FORECAST FOR IGNAR FIRE...NPS - OLYMPIC
NATIONAL WEATHER SERVICE SEATTLE WA
833 PM PDT FRI AUG 26 2016

FORECAST IS BASED ON REQUEST TIME OF 2027 PDT ON AUGUST 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...THE THERMALLY INDUCED TROUGH OF LOW PRESSURE HAS MOVED
EAST OF THE CASCADES AND THIS HAS ALLOWED ONSHORE FLOW TO RETURN.
EXPECT ONSHORE FLOW TO STRENGTHEN OVERNIGHT THROUGH SATURDAY...
RESULTING IN SIGNIFICANT COOLING AND HIGHER RELATIVE HUMIDITIES.
MIXING WILL ALSO IMPROVE ON SATURDAY DUE TO THE SOUTHERN END OF AN
UPPER LEVEL TROUGH MOVING ACROSS THE AREA. THIS WILL ALLOW SMOKE TO
LIFT AND DISPERSE SOME IN THE AFTERNOON.

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

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0%.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........62 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNVALLEY OR DOWNSLOPE 3 TO 7 MPH.
MIXING HEIGHT.......4500 FT AGL...DECREASING TO 400 FT AGL BY
                    MIDNIGHT.
TRANSPORT WINDS.....LIGHT WINDS.
HAINES INDEX........3 OR VERY LOW.
LAL.................1.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0%.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UPVALLEY OR WESTERLY 4 TO 10 MPH.
MIXING HEIGHT.......400 FT AGL...INCREASING TO 2200-3200 FT AGL
                    BY MIDDAY.
TRANSPORT WINDS.....WEST AROUND 9 MPH.
HAINES INDEX........4 OR LOW.
LAL.................1.

$$

FORECASTER...05
REQUESTED BY...TODD RANKIN
TYPE OF REQUEST...WILDFIRE
.TAG 20160826.IGNAR.01/SEW



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