Weather Alert in Maryland

Recent Locations: Moore, MT   Carol Stream, IL   College Park, MD  

Cold Weather Advisory issued February 8 at 12:55PM EST until February 9 at 10:00AM EST by NWS Baltimore MD/Washington DC

AREAS AFFECTED: Extreme Western Allegany; Central and Eastern Allegany; Western Garrett; Eastern Garrett; Western Grant; Western Mineral; Eastern Mineral

DESCRIPTION: * WHAT...Cold wind chills of 10 below to 15 below expected on the ridges, with cold temperatures colder than 10 below possible in high elevation valleys. * WHERE...In Maryland, Allegany and Garrett Counties. In West Virginia, Mineral and Western Grant Counties. * WHEN...From 10 PM this evening to 10 AM EST Monday. * IMPACTS...The cold weather could result in hypothermia if precautions are not taken.

INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside. If you do not have heat in your home or lack shelter, you can call 211 or visit your local county or city Website for assistance locating appropriate shelter from the cold.

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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

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