Forecast Details for Seattle-Tacoma International Airport, WA

Recent Locations: Seattle-Tacoma International Airport, WA  
Today: Mostly sunny, with a high near 69. Calm wind becoming west northwest around 6 mph in the afternoon.
Tonight: Increasing clouds, with a low around 46. North wind 5 to 7 mph becoming light and variable in the evening.
Wednesday: A 20 percent chance of rain after 11am. Partly sunny, with a high near 60. Southwest wind 7 to 9 mph.
Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 47. South wind 6 to 9 mph.
Thursday: Rain, mainly after 11am. High near 54. South wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night: Rain. Low around 49. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday: Rain. High near 56. Chance of precipitation is 80%.
Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 47.
Saturday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 57.
Saturday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 47.
Sunday: Rain likely. Mostly cloudy, with a high near 56.
Sunday Night: Rain likely. Mostly cloudy, with a low around 44.
Monday: Rain likely. Mostly cloudy, with a high near 55.

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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

The Current National Weather Forecast and National Weather Map are shown below.

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 Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Altocumulus Clouds Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Cirrocumulus Clouds Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds