Forecast Details for Happy Valley, OR

Recent Locations: Haworth, NJ Middletown, CA Happy Valley, OR

Overnight: Rain, mainly before 5am. Low around 44. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: Rain, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. High near 51. Breezy, with a south southeast wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night: Rain and possibly a thunderstorm before midnight, then rain likely. Snow level 3000 feet lowering to 2000 feet after midnight . Low around 40. South southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Rain likely. Snow level 2100 feet rising to 3200 feet in the afternoon. Mostly cloudy, with a high near 54. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Thursday Night: Partly cloudy, with a low around 37. West wind 5 to 10 mph becoming light and variable after midnight.

Friday: Sunny, with a high near 59.

Friday Night: Clear, with a low around 40.

Saturday: Sunny, with a high near 68.

Saturday Night: Mostly clear, with a low around 44.

Sunday: Mostly sunny, with a high near 71.

Sunday Night: Partly cloudy, with a low around 47.

Monday: Partly sunny, with a high near 71.

Monday Night: Mostly cloudy, with a low around 48.

Tuesday: A chance of rain. Partly sunny, with a high near 62.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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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.

Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds