FNUS76 KSEW 151756
FWSSEW

Spot Forecast for **DRILL Barbee Train Derailment Drill**...EPA
National Weather Service Seattle WA
1056 AM PDT Wed Apr 15 2026

Forecast is based on forecast start time of 1100 PDT on April 15.
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...This is typically where an overview discussion would
go. We would discuss weather that has the potential to impact the
incident and provide any other necessary context for decision
making. Of note, for a HAZMAT incident we also have the ability to
create a dispersion model. Please feel free to reach out to
reid.wolcott@noaa.gov with any questions on this process. The
output below has not been heavily QC'd since this is a drill and
is provided as an example only.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of rain
                    showers and slight chance of thunderstorms late
                    in the morning, then rain showers and chance of
                    thunderstorms in the afternoon.
Chance of rain......MISSING.
Chance of lightning.27 percent.
Max temperature.....Around 51.
Min humidity........69 percent.
Surface winds (mph).Southwest winds around 6 mph.
Mixing height.......4200 ft AGL.
Transport winds.....Southwest around 14 mph.
Rainfall amount.....0.13 inches.
CEILING (KFT).......2.7 increasing to 3.5 in the afternoon.
Visibility..........10.

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (35-45 percent). Rain showers and
                    slight chance of thunderstorms in the evening.
Chance of rain......MISSING.
Chance of lightning.15 percent.
Min temperature.....Around 37.
Max humidity........94 percent.
Surface winds (mph).South winds around 5 mph.
Mixing height.......900 ft AGL.
Transport winds.....South around 4 mph.
Rainfall amount.....0.07 inches.
CEILING (KFT).......1.3 increasing to 1.8 overnight.
Visibility..........7 increasing to 10 overnight.

.THURSDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Chance of rain......MISSING.
Chance of lightning.3 percent.
Max temperature.....Around 57.
Min humidity........50 percent.
Surface winds (mph).South winds around 5 mph shifting to the
                    southwest 5 to 6 mph in the afternoon.
Mixing height.......4600 ft AGL.
Transport winds.....Southwest around 7 mph.
Rainfall amount.....0.00 inches.
CEILING (KFT).......1.3 in the morning.
Visibility..........10 in the morning.

$$
Forecaster...Wolcott
Requested by...Jeff Fowlow
Type of request...HAZMAT
.TAG 2610440.0/SEW
.DELDT 04/15/26
.FormatterVersion 2.0.0
.EMAIL morgan.larimer@westonsolutions.com