Forecast Details for Calpella, CA

Recent Locations: Calpella, CA  
This Afternoon: Sunny, with a high near 67. West northwest wind 11 to 14 mph.
Tonight: Clear, with a low around 38. West northwest wind 9 to 14 mph becoming light after midnight.
Tuesday: Sunny, with a high near 68. Light west northwest wind increasing to 8 to 13 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night: Clear, with a low around 38. North northwest wind 5 to 14 mph, with gusts as high as 21 mph.
Wednesday: Sunny, with a high near 74. Light north wind becoming west northwest 5 to 10 mph in the afternoon.
Wednesday Night: Clear, with a low around 43. North wind 6 to 14 mph, with gusts as high as 21 mph.
Thursday: Sunny, with a high near 77.
Thursday Night: Mostly clear, with a low around 47.
Friday: Sunny, with a high near 77.
Friday Night: Mostly cloudy, with a low around 49.
Saturday: A chance of rain. Mostly cloudy, with a high near 63.
Saturday Night: A chance of rain. Mostly cloudy, with a low around 43.
Sunday: A slight chance of rain. Partly sunny, with a high near 65.

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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 Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain

Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail