The National Weather Service has issued a tornado warning for Nassau and Westchester counties until 12 a.m. Wednesday.

In addition, a severe thunderstorm warning has been issued for Queens and Nassau and Suffolk counties until 12:30 a.m. Wednesday. Warnings are also in effect for Westchester and Fairfield counties until 12:15 a.m.

The safest place to be during a tornado is in a basement. Get under a workbench or other piece of sturdy furniture. If no basement is available seek shelter on the lowest floor of the building in an interior hallway or room such as a closet. Use blankets or pillows to cover your body and always stay away from windows. If in mobile homes or vehicles evacuate them and get inside a substantial shelter. If no shelter is available lie flat in the nearest ditch or other low spot and cover your head with your hands.

A line of severe thunderstorms capable of producing penny size hail and damaging winds in excess of 60 mph is moving across the area.

Severe Thunderstorm Warning in CT – Northern Fairfield , Southern Fairfield 

Severe Thunderstorm Warning in NJ – Bergen , Eastern Passaic , Western Passaic

Tornado Warning – Nassau , Northern Westchester , Southern Westchester

Severe Thunderstorm Warning – Bronx , Nassau , New York (Manhattan) , Northeast Suffolk , Northern Westchester , Northwest Suffolk , Queens , Rockland , Southeast Suffolk , Southern Westchester , Southwest Suffolk

(Source: CBS2)