Full Notification

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PORTLAND OR
153 PM PDT TUE SEP 9 2014

...EAST WIND WITH LOW RELATIVE HUMIDITY OVER MUCH OF THE
FORECAST AREA THURSDAY THROUGH FRIDAY AFTERNOON...

.AN OFFSHORE PATTERN WILL DEVELOP WEDNESDAY NIGHT AND THEN INTENSIFY THURSDAY. A SURFACE THERMAL TROUGH ALONG THE COAST AND STRONG HIGH PRESSURE OVER EASTERN WASHINGTON AND OREGON WILL PRODUCE MODERATE TO STRONG EAST WIND. THE COMBINATION OF STRONG WIND...LOW HUMIDITY AND CRITICALLY DRY FUELS WILL CREATE AN ELEVATED BURNING ENVIRONMENT. THE PEAK OFFSHORE PERIOD WILL BE THURSDAY. WIND WILL BEGIN TO DIMINISH OVER THE SOUTH ZONES FRIDAY MORNING...BUT PERSIST OVER THE NORTH ZONES INTO LATE AFTERNOON OR EARLY EVENING.

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON FOR WIND...LOW RELATIVE HUMIDITY AND CRITICALLY DRY FUELS FOR FIRE WEATHER ZONES 602...603...OREGON ZONE 604...WASHINGTON ZONE 604...605...606...607 AND 608...

THE NATIONAL WEATHER SERVICE IN PORTLAND HAS ISSUED A FIRE
WEATHER WATCH FOR WIND...LOW RELATIVE HUMIDITY...AND CRITICALLY DRY FUELS...WHICH IS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON.

* AFFECTED AREA...FIRE WEATHER ZONES 602...603...OREGON ZONE
  604...WASHINGTON ZONE 604...605...606...607 AND 608. THIS
  INCLUDES THE SIUSLAW...MOUNT HOOD AND WILLAMETTE NATIONAL FORESTS...AND STATE-PROTECTED LAND WITHIN THE WATCH AREA.

* TIMING...NORTHEAST TO EAST WIND WILL DEVELOP WEDNESDAY NIGHT THEN STRENGTHEN THURSDAY. THE MOST CRITICAL PERIOD WILL BE LATE THURSDAY MORNING THROUGH FRIDAY MORNING.

* WINDS...EAST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH...BUT 20 TO 30 MPH WITH GUSTS UP TO 55 MPH ON EXPOSED RIDGES AND EAST-WIND PRONE AREAS...SUCH AS THE FAR WEST END OF THE COLUMBIA GORGE.

* RELATIVE HUMIDITY...GENERALLY 15 TO 25 PERCENT THURSDAY AND FRIDAY AFTEROONS. HUMIDITY RECOVERY AS LOW AS 25 TO 35 PERCENT THURSDAY NIGHT...LOWEST ON SLOPES AND RIDGES.

* IMPACTS...THE COMBINATION OF WIND...LOW HUMIDITY AND CRITICALLY   DRY FUELS MAY RESULT IN RAPID FIRE SPREAD SHOULD ANY STARTS   OCCUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS.