Weather Alert in Pennsylvania
Severe Thunderstorm Warning issued September 6 at 3:46PM EDT until September 6 at 4:15PM EDT by NWS Mount Holly NJ
AREAS AFFECTED: Chester, PA
DESCRIPTION: SVRPHI The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for... Southwestern Chester County in southeastern Pennsylvania... * Until 415 PM EDT. * At 346 PM EDT, a severe thunderstorm was located over Glen Roy, or 14 miles north of Havre De Grace, moving northeast at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Damage to roofs, siding, trees, and power lines is possible. * Locations impacted include... Coatesville, Oxford, Parkesburg, Homeville, Glen Roy, Mount Vernon, Cochranville, Atglen, South Coatesville, Christiana, and Modena.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - 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
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