678
FNUS76 KSEW 201155
FWSSEW
SPOT FORECAST FOR BORDER 2 FIRE...NPS
NATIONAL WEATHER SERVICE SEATTLE WA
455 AM PDT SUN SEP 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON SEPTEMBER 20.
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.
DISCUSSION
HIGH PRESSURE ALOFT WITH LIGHT FLOW IN THE LOWER
LEVELS THROUGH TONIGHT. RIDGE WEAKENING MONDAY AS A WEAK SYSTEM MOVES
BY TO THE NORTH OF THE FIRE.
TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH UP TO 5 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......3200 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 7 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25.
VISIBILITY..........10.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........70 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25.
VISIBILITY..........10.
MONDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........32 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 5 MPH SHIFTING TO THE
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
MIXING HEIGHT.......3600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......10 LOWERING TO 2.0 IN THE AFTERNOON.
VISIBILITY..........10.
FORECASTER...FELTON
REQUESTED BY...EMMA ANDERSON
TYPE OF REQUEST...WILDFIRE
.TAG 2621327.12/SEW
.DELDT 09/20/26
.FORMATTERVERSION 2.0.0
.EMAIL EMMA.ANDERSON@USDA.GOV,MELVIN.DURRANT@USDA.GOV,ALAN@AMTPRODUCTIONS.COM
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