156
FNUS76 KSEW 161524
FWSSEW
SPOT FORECAST FOR PERRY FIRE...NPS
NATIONAL WEATHER SERVICE SEATTLE WA
824 AM PDT TUE SEP 16 2025
FORECAST IS BASED ON FORECAST START TIME OF 0900 PDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (206) 526-6095, IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
..RED FLAG WARNING IN EFFECT UNTIL 11 PM PDT THIS EVENING
DISCUSSION
THERMALLY INDUCED SURFACE TROUGH OF LOW PRESSURE ALONG
THE COAST THIS MORNING WILL SLOWLY SHIFT INLAND LATE THIS AFTERNOON
AND EVENING. THE RESULTING LOW LEVEL OFFSHORE FLOW WILL GIVE THE
FIRE LOCATION A VERY DRY AND WARM DAY. WEAK LOW LEVEL
ONSHORE FLOW DEVELOPING WEDNESDAY WITH THE THERMAL TROUGH EAST OF
THE AREA BY AFTERNOON FOR CALMER WINDS AND SLIGHTLY HIGHER
MINIMUM RELATIVE HUMIDITY VALUES.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH SHIFTING TO THE
SOUTHEAST 8 TO 14 MPH IN THE AFTERNOON.
MIXING HEIGHT.......4200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25.
VISIBILITY..........10.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........64 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 11 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
VISIBILITY..........2-4.
WEDNESDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RAINFALL AMOUNT.....0.00 INCHES.
VISIBILITY..........2-4.
FORECASTER...FELTON
REQUESTED BY...JOHN FOLEY
TYPE OF REQUEST...WILDFIRE
.TAG 2522032.0/SEW
.DELDT 09/16/25
.FORMATTERVERSION 2.0.0
.EMAIL JCFOLEY@NPS.GOV
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