Weather Alert in Pennsylvania
Extreme Cold Warning issued February 8 at 12:37AM EST until February 8 at 1:00PM EST by NWS Binghamton NY
AREAS AFFECTED: Wyoming; Lackawanna; Luzerne
DESCRIPTION: * WHAT...For the Extreme Cold Warning, dangerously cold wind chills as low as 28 below. For the Cold Weather Advisory, very cold wind chills as low as 18 below expected. * WHERE...Lackawanna, Luzerne, and Wyoming Counties. * WHEN...For the Extreme Cold Warning, until 1 PM EST this afternoon. For the Cold Weather Advisory, from 1 PM this afternoon to 10 AM EST Monday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. Hypothermia is also possible from prolonged exposure to the cold. * ADDITIONAL DETAILS...The coldest wind chills are expected over the exposed, higher this morning. Wind gusts gradually diminish on Sunday, falling below 30 mph for most locations. The coldest wind chills tonight and Monday look to be around sunrise Monday morning.
INSTRUCTION: Dress in layers including a hat, face mask, and gloves if you must go outside or travel. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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