Spot Forecast
Issued by NWS Seattle/Tacoma, WA

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FNUS76 KSEW 211517
FWSSEW

Spot Forecast for TA15 RX...Fort Lewis-McChord
National Weather Service Seattle WA
817 AM PDT Thu Aug 21 2025

Forecast is based on ignition time of 0900 PDT on August 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 FRIDAY TO 5 AM PDT
TUESDAY...

.DISCUSSION...Warming and drying trend starts today but really
kicks into gear Friday as upper level high pressure builds
strongly over the area. Winds shift to more easterly but remain on
the light side. Friday will be hot and dry with minimum relative
humidity falling into the upper 20 percent range though good overnight
humidity recovery tonight is expected.


.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 80.
Min humidity........36 percent.
Wind (20 ft)........North northeast winds 5 to 7 mph.
Mixing height.......2900 ft AGL.
Transport winds.....North around 9 mph.

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Min temperature.....Around 53.
Max humidity........80 percent.
Wind (20 ft)........North winds 5 to 6 mph in the evening becoming
                    light.
Mixing height.......500 ft AGL.
Transport winds.....Northeast around 7 mph.

.FRIDAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 90.
Min humidity........29 percent.
Wind (20 ft)........Light winds becoming northeast around 6 mph in the
                    afternoon.
Mixing height.......1700 ft AGL.
Transport winds.....North around 6 mph.

$$
Forecaster...Bower
Requested by...Kathryn Hill
Type of request...PRESCRIBED
.TAG 2520377.0/SEW
.DELDT 08/21/25
.FormatterVersion 2.0.0
.EMAIL kathryn.c.hill5.civ@army.mil