Weather Alerts for New York
1. Extreme Heat Watch for: Eastern Clinton; Grand Isle; Western Franklin; Western Chittenden
2. Extreme Heat Watch for: Eastern Essex; Western Addison; Eastern Windsor
3. Extreme Heat Watch for: New York (Manhattan); Bronx; Richmond (Staten Is.); Kings (Brooklyn); Northern Queens; Southern Queens
4. Extreme Heat Watch for: Northern Saratoga; Eastern Schenectady; Southern Saratoga; Eastern Albany; Western Rensselaer; Eastern Greene; Western Columbia; Eastern Columbia; Southeast Warren; Southern Washington
5. Extreme Heat Watch for: Northern Washington; Eastern Windham
6. Heat Advisory for: Eastern Essex; Western Addison; Eastern Windsor
7. Heat Advisory for: Jefferson; Lewis
8. Heat Advisory for: Monroe; Wayne; Northern Cayuga; Oswego; Livingston; Ontario
9. Heat Advisory for: Niagara; Orleans; Northern Erie; Genesee; Wyoming; Chautauqua; Cattaraugus; Allegany; Southern Erie
10. Heat Advisory for: Northern Oneida; Yates; Seneca; Southern Cayuga; Steuben; Madison; Southern Oneida; Cortland; Chenango; Otsego; Delaware
11. Heat Advisory for: Northern Saratoga; Eastern Schenectady; Southern Saratoga; Eastern Albany; Western Rensselaer; Eastern Greene; Western Columbia; Eastern Columbia; Southeast Warren; Southern Washington
12. Heat Advisory for: Northern St. Lawrence; Southwestern St. Lawrence; Western Rutland
13. Heat Advisory for: Northern Washington; Eastern Windham
14. Heat Advisory for: Onondaga; Schuyler; Chemung; Tompkins; Tioga; Broome; Sullivan; Bradford; Susquehanna; Northern Wayne; Wyoming; Lackawanna; Luzerne; Pike; Southern Wayne
15. Heat Advisory for: Southern Herkimer; Southern Fulton; Montgomery; Western Schenectady
16. Heat Advisory for: Southern Herkimer; Southern Fulton; Montgomery; Western Schenectady
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North America Water Vapor (Moisture)
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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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