Forecast Details for Mount Vernon, WA

Recent Locations: Mount Vernon, WA  
This Afternoon: A 30 percent chance of showers. Partly sunny, with a high near 49. Southwest wind around 17 mph, with gusts as high as 24 mph.
Tonight: Rain likely, mainly after 4am. Mostly cloudy, with a low around 41. East wind 13 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday: Rain likely before 10am, then showers, mainly after 4pm. High near 47. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night: Rain. Low around 44. Southeast wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday: Rain. High near 51. South southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday: Rain. High near 46. Chance of precipitation is 80%.
Sunday Night: Rain. Mostly cloudy, with a low around 40.
Monday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 46.
Monday Night: A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 38.
Tuesday: A chance of rain. Mostly cloudy, with a high near 46.
Tuesday Night: A chance of rain. Mostly cloudy, with a low around 38.
New Year's Day: Rain likely. Mostly cloudy, with a high near 47.

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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

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