Weather Alert in Pennsylvania
Special Weather Statement issued February 11 at 2:11PM EST by NWS State College PA
AREAS AFFECTED: Warren; McKean; Elk; Clearfield; Cambria; Somerset
DESCRIPTION: Deepening cold and relatively moist air being lifted across the Mountains of Western Pennsylvania will result in fairly persistent light snow late today through Thursday. Snowfall rates will peak at only around one-quarter of an inch per hour for much of the area along and to the east of the Route 219 corridor. However, a few periods of snowfall rates of one half inch per hour or greater will likely occur in the areas of greatest upslope flow, such as the ski areas of the Laurel Highlands and the perennial snowbelt of Northern Warren County. Total snowfall during this 24 to 30 hour period will range from just an inch or two in the valleys near and to the east of Route 219, to as much as 4 or 5 inches along the crest of Laurel Ridge in Somerset County. Roads could become snow covered and slippery tonight and Thursday as temperatures settle into the upper teens to low 20s for the bulk of the time. Use extra caution and allow extra time to reach your destination if you plan to travel.
INSTRUCTION: N/A
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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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