Weather Alert in Delaware

Recent Locations: Waynesville, NC Munfordville, KY Seaford, DE

Current Alerts for Seaford, DE: Special Weather Statement

Special Weather Statement issued February 28 at 4:17AM EST by NWS Mount Holly NJ

AREAS AFFECTED: New Castle; Kent; Inland Sussex; Delaware Beaches; Morris; Hunterdon; Somerset; Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks

DESCRIPTION: Areas of patchy fog have continued to expand into portions of Delaware, northern New Jersey, and southeast Pennsylvania early this morning. Temperatures are also below freezing, which may result in areas of freezing fog. In addition, any snowmelt from Friday could result in the formation of black ice. Use caution if traveling this morning as patchy fog can result in unexpected reduced visibilities and black ice can make conditions very slippery. Slow down, use your low beam lights, and leave extra room between you and other vehicles.

INSTRUCTION: N/A

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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

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