Forecast Details for Heisson, WA

Recent Locations: Ocean Park, ME Guthrie Center, IA Heisson, WA

Today: Rain, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. High near 50. South southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Rain and possibly a thunderstorm before 1am, then rain likely. Snow level 2900 feet lowering to 1900 feet after midnight . Low around 37. South southwest wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Rain. Snow level 2000 feet rising to 3100 feet in the afternoon. High near 52. West wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: A 20 percent chance of rain before 11pm. Patchy frost after 2am. Otherwise, partly cloudy, with a low around 35. West wind 5 to 7 mph becoming calm in the evening.

Friday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 60. Calm wind.

Friday Night: Clear, with a low around 37.

Saturday: Sunny, with a high near 68.

Saturday Night: Partly cloudy, with a low around 43.

Sunday: Mostly sunny, with a high near 71.

Sunday Night: Partly cloudy, with a low around 46.

Monday: Partly sunny, with a high near 71.

Monday Night: Mostly cloudy, with a low around 47.

Tuesday: A chance of rain. Partly sunny, with a high near 61.

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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)

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Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds