Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Winter Storm Watch in effect from April 14, 05:00 PM PDT until April 16, 05:00 AM PDT

Current conditions at

CASTLE ROCK (TR950)

Lat: 46.27139°NLon: 122.89194°WElev: 213.0ft.

48°F

9°C

Humidity	98%
Wind Speed	S 2 MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Last update	13 Apr 05:09 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

11 Miles NW Mount St Helens WA

Winter Storm Watch April 14, 05:00pm until April 16, 05:00am

Click here for hazard details and duration

Winter Storm Watch

Today
High: 38 °F
Rain/Snow
Tonight
Low: 34 °F
Chance
Rain/Snow
then Chance
Snow Showers
Tuesday
High: 36 °F
Snow and
Breezy
Tuesday Night
Low: 30 °F
Breezy.
Rain/Snow
then Heavy
Snow
Wednesday
High: 33 °F
Snow
Wednesday Night
Low: 28 °F
Snow Showers
then Chance
Snow
Thursday
High: 38 °F
Snow Likely
Thursday Night
Low: 31 °F
Chance Snow
then Mostly
Cloudy
Friday
High: 43 °F
Slight Chance
Snow

Detailed Forecast

Today

Rain and snow showers. Snow level 3800 feet. High near 38. West wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tonight

A chance of rain and snow showers before 11pm, then a chance of snow showers after 1am. Mostly cloudy, with a low around 34. West wind 6 to 9 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Tuesday

Snow. High near 36. Breezy, with a south southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Tuesday Night

Snow before 8pm, then snow, possibly mixed with rain between 8pm and 11pm, then snow after 11pm. The snow could be heavy at times. Low around 30. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Wednesday

Snow before 5pm, then snow showers after 5pm. Some thunder is also possible. High near 33. West wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Wednesday Night

Snow showers before 8pm, then snow, mainly between 8pm and 11pm. Some thunder is also possible. Low around 28. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday

Snow likely, mainly after 11am. Partly sunny, with a high near 38. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Night

A chance of snow before 11pm. Mostly cloudy, with a low around 31.

Friday

A slight chance of snow. Partly sunny, with a high near 43.

Friday Night

Mostly cloudy, with a low around 33.

Saturday

A slight chance of rain and snow. Snow level rising to 4300 feet in the afternoon. Partly sunny, with a high near 49.

Saturday Night

A chance of rain and snow. Snow level 4500 feet. Mostly cloudy, with a low around 39.

Sunday

Rain and snow likely. Snow level 4000 feet. Mostly cloudy, with a high near 46.