UPDATE: The tornado watch has expired.
The National Weather Service has extended a Tornado Watch to much of New Jersey. It is in effect until 1 a.m. Thursday.
The counties under the watch are Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester, Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean, Somerset, Sussex, and Warren.
Severe thunderstorms that can produce tornadoes are moving across the Mid-Atlantic and Tristate areas. Other weather alerts are in effect, including Wind Advisories and Flood Watches.
Department of Homeland Security: Tornado Facts
Quick facts you should know about tornadoes:
- They may strike quickly, with little or no warning.
- They may appear nearly transparent until dust and debris are picked up or a cloud forms in the funnel.
- The average tornado moves Southwest to Northeast, but tornadoes have been known to move in any direction.
- The average forward speed of a tornado is 30 mph, but may vary from stationary to 70 mph.
- Tornadoes can accompany tropical storms and hurricanes as they move onto land.
- Waterspouts are tornadoes that form over water.
- Tornadoes are most frequently reported east of the Rocky Mountains during spring and summer months.
- Peak tornado season in the southern states is March through May; in the northern states, it is late spring through early summer.
- Tornadoes are most likely to occur between 3 pm and 9 pm, but can occur at any time.
Information from http://www.ready.gov/tornadoes