FNUS76 KSEW 211100

FWSSEW



Spot Forecast for WIWFA June Session...WA-DNR

National Weather Service Seattle WA

400 AM PDT Sun Jun 21 2026



Forecast is based on forecast start time of 0600 PDT on June 21. 

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.



...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 11 PM PDT

WEDNESDAY...



.DISCUSSION...An upper level ridge will begin to rebuild today 

for warmer daytime temperatures into Tuesday along with dry

conditions. Afternoon relative humidity will drop to near 30 

percent or below Monday afternoon with moderate overnight 

recoveries. Light downslope northeast winds will become light 

northwesterly upslope in the afternoon.



.TODAY...



Sky/weather.........Mostly sunny (20-30 percent). 

CWR.................0 percent. 

Chance of lightning.0 percent. 

Max temperature.....Around 78. 

Min humidity........38 percent. 

Wind (20 ft)........Light winds becoming northwest around 5 mph in 

                    the afternoon. 

Mixing height.......2700 ft AGL. 

Transport winds.....Northwest around 7 mph. 

Rainfall amount.....0.00 inches. 

Ceiling (KFT).......3.5 increasing to 25 in the afternoon. 

Visibility..........10. 



.TONIGHT...



Sky/weather.........Clear (0-10 percent). 

CWR.................0 percent. 

Chance of lightning.0 percent. 

Min temperature.....Around 53. 

Max humidity........81 percent. 

Wind (20 ft)........Light winds. 

Mixing height.......300 ft AGL. 

Transport winds.....Northeast around 5 mph. 

Rainfall amount.....0.00 inches. 

Ceiling (KFT).......25. 

Visibility..........10. 



.MONDAY...



Sky/weather.........Mostly sunny (20-30 percent). 

CWR.................0 percent. 

Chance of lightning.0 percent. 

Max temperature.....Around 87. 

Min humidity........32 percent. 

Wind (20 ft)........Light winds becoming northwest around 5 mph in 

                    the afternoon. 

Mixing height.......3700 ft AGL. 

Transport winds.....North around 5 mph. 

Rainfall amount.....0.00 inches. 

Ceiling (KFT).......25. 

Visibility..........10. 



$$

Forecaster...Guy

Requested by...Training Coordinator/Operations

Type of request...WILDFIRE

.TAG 2615373.5/SEW

.DELDT 06/21/26

.FormatterVersion 2.0.0

.EMAIL krissy.mitchell@dnr.wa.gov,sean.kibbe@dnr.wa.gov,ross.avichouser@dnr.wa.gov,lois.anderson@dnr.wa.gov