UPDATE: Severe Thunderstorm Warning Issued For Radnor

The National Weather Service has issued a severe thunderstorm watch for Montgomery and Chester Counties.

The warning is in effect until 3:30 p.m. Tuesday, while a watch is in effect until 8 p.m.

Doppler radar indicated a severe thunderstorm capable of producing quarter size hail and damaging winds in excess of 60 mph, according to the National Weather Service.

Per Weather.gov:

This is issued when either a severe thunderstorm is indicated by the WSR-88D radar or a spotter reports a thunderstorm producing hail one inch or larger in diameter and/or winds equal or exceed 58 miles an hour; therefore, people in the affected area should seek safe shelter immediately. Severe thunderstorms can produce tornadoes with little or no advance warning. Lightning frequency is not a criteria for issuing a severe thunderstorm warning. They are usually issued for a duration of one hour. They can be issued without a Severe Thunderstorm Watch being already in effect.

Rainfall amounts are likely to be less than in inch during the day, but could be more where there are thunderstorms.

By 7 p.m., the chance of thunderstorms rises to 60 percent, and showers are likely. There is also a chance of thunderstorms at some point between 7 a.m. and 2 p.m.

The temperature will drop from the day’s high of 84 to a low of 68.

Much of the region is just recovering from last Tuesday’s storm, which left over 140,000 without power.

The watch extended throughout much of the region, covering all of southeastern and south-central Pennsylvania, and much of southern New Jersey.

This is a developing story. Please check back for an updated forecast as we learn more.