Weather Alert in Michigan

Recent Locations: Wyoming, MI Greenwich, OH

Current Alerts for Wyoming, MI: Wind Advisory

Special Weather Statement issued February 19 at 7:32PM EST by NWS Detroit/Pontiac MI

AREAS AFFECTED: Oakland; Macomb; Washtenaw; Wayne; Lenawee; Monroe

DESCRIPTION: WEATHER... * Patchy fog will impact southeastern Michigan during the evening hours. IMPACTS... * Patchy dense fog will reduce visibilities to near zero at times. Rapid fluctuations of visibility will occur.

INSTRUCTION: * Patchy dense fog means areal coverage or duration of the dense fog will be limited. Motorists are urged to use caution and account for variable driving conditions by slowing down and allowing extra time. * Prepare, plan and stay informed. Visit http://go.usa.gov/c7kkP

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds