Weather Alert in Maryland

Recent Locations: Fargo, ND Sims, NC Cumberland, MD

Severe Thunderstorm Warning issued September 6 at 2:47PM EDT until September 6 at 3:15PM EDT by NWS Baltimore MD/Washington DC

AREAS AFFECTED: Baltimore, MD; Harford, MD

DESCRIPTION: SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Central Harford County in northern Maryland... Eastern Baltimore County in northern Maryland... * Until 315 PM EDT. * At 247 PM EDT, a severe thunderstorm was located near Bel Air South, or 8 miles southwest of Aberdeen, moving northeast at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include... Aberdeen, Havre De Grace, Bel Air South, Bel Air North, Riverside, Perryman, Edgewood, Joppatowne, Churchville, Carsins, Magnolia, Bradshaw, Harford Furnace, Abingdon, Joppa, Gunpowder, and Belcamp.

INSTRUCTION: For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning.

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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