Weather Alert in New York
Extreme Heat Watch issued June 21 at 2:59AM EDT until June 24 at 8:00PM EDT by NWS Albany NY
AREAS AFFECTED: Northern Saratoga; Eastern Schenectady; Southern Saratoga; Eastern Albany; Western Rensselaer; Eastern Greene; Western Columbia; Eastern Columbia; Southeast Warren; Southern Washington
DESCRIPTION: * WHAT...For the Heat Advisory, heat index values between 99 and 103 degrees expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 108 degrees possible. * WHERE...Eastern Albany, Eastern Columbia, Eastern Greene, Eastern Schenectady, Northern Saratoga, Southeast Warren, Southern Saratoga, Southern Washington, Western Columbia, and Western Rensselaer Counties. * WHEN...For the Heat Advisory, from 11 AM to 8 PM EDT Sunday. For the Extreme Heat Watch, from Monday morning through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
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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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