603
FNUS76 KSEW 202012
FWSSEW
SPOT FORECAST FOR ELECTRIC FIRE...US FOREST SERVICE
NATIONAL WEATHER SERVICE SEATTLE WA
112 PM PDT SUN SEP 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 1400 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
CLEAR CONDITIONS WILL PERSIST THIS AFTERNOON WITH
SLIGHTLY WARMER TEMPERATURES. THERE IS A WEAK OFFSHORE WIND COMING
THROUGH THE CASCADES TODAY, WHICH WILL LOWER THE AFTERNOON
RELATIVE HUMIDITY VALUES TO AROUND 35 PERCENT. RECENT COOL AND
WETTER WEATHER WILL HAVE LIKELY MODERATED THE HEAVIER FUELS TO AN EXTENT, BUT
THE LOW RH TODAY COULD PROMPT A LITTLE MORE RESPONSE TO THE
DRYNESS IN THE FINER FUELS. MORE ONSHORE FLOW ON MONDAY WILL KEEP
THE RH UP, WITH SIMILAR TEMPERATURES IN THE FORECAST.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 MPH, WESTERLY AFTER 1700.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 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 55.
MAX HUMIDITY........55 PERCENT.
WIND (20 FT)........WNW ON THE RIDGES 5-8 MPH, OTHERWISE DOWNSLOPE 3-5 MPH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25.
VISIBILITY..........10.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........55 PERCENT.
WIND (20 FT)........SOUTH 5 TO 9 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25.
VISIBILITY..........10.
FORECASTER...KRISTELL
REQUESTED BY...JACK BRUEMMER
TYPE OF REQUEST...WILDFIRE
.TAG 2622088.2/SEW
.DELDT 09/20/26
.FORMATTERVERSION 2.0.0
.EMAIL JACK.BRUEMMER@USDA.GOV
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