Forecast Details for Seattle, WA

Recent Locations: Seattle, WA  
Today: Showers, with thunderstorms also possible after 3pm. Some of the storms could produce small hail. High near 52. South southeast wind 7 to 11 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight: Showers likely and possibly a thunderstorm before 4am, then a chance of showers. Some of the storms could produce small hail. Mostly cloudy, with a low around 43. South wind 9 to 13 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday: A 40 percent chance of showers. Mostly cloudy, with a high near 56. South wind 5 to 7 mph becoming west northwest in the afternoon.
Friday Night: Mostly clear, with a low around 42. North wind 6 to 8 mph.
Saturday: Mostly sunny, with a high near 56. North northeast wind 5 to 7 mph.
Saturday Night: Partly cloudy, with a low around 40.
Sunday: Sunny, with a high near 58.
Sunday Night: Mostly clear, with a low around 42.
Monday: Mostly sunny, with a high near 61.
Monday Night: A slight chance of rain after midnight. Partly cloudy, with a low around 47.
Tuesday: A chance of rain. Mostly cloudy, with a high near 58.
Tuesday Night: A chance of rain. Mostly cloudy, with a low around 43.
Wednesday: A chance of rain. Partly sunny, with a high near 51.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Precipitation Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain