Issued by NWS Seattle/Tacoma, WA
FNUS76 KSEW 280040
Spot Forecast for I-5/I-90 tanker overturn...NWS Seattle for Seattle EM
National Weather Service Seattle WA
440 PM PST Mon Feb 27 2017
Forecast is based on incident time of 1700 PST on February 27.
If conditions become unrepresentative...contact the National Weather
Please contact our office at (206) 526-6095, if you have questions
or concerns with this forecast.
.DISCUSSION....The immediate threat of showers is ending now over
the incident and there will be a break for a few hours. There are
plenty of showers that continue to move through western WA however.
Cool northwesterly flow aloft will prevail through tonight that
will bring occasional showers. The development of a convergence
zone is still possible that could bring heavier showers and a
greater chance for the showers to be snow rather than rain,
especially after sundown. Indications are that if the convergence
zone forms this evening, it will be short lived. Additional
accumulations of snow should be light if any.
Forecast for 20 foot wind speed (valleys and ridge tops) are 10
minute averages reflecting RAWS winds.
Sky/weather.........Mostly cloudy. Rain showers likely in the
evening decreasing to a chance after midnight.
Chance of snow showers through the night.
Chance of pcpn......70 percent.
Amount of pcpn......Around 0.15 inches.
Min temperature.....Around 33.
Max humidity........100 percent.
Surface winds.......South winds 5 to 11 mph.
Mixing height.......2000-3000 ft AGL.
Requested by...Brent Bower
Type of request...Hazmat