PHILADELPHIA (CBS) — A severe thunderstorm watch has been issued for the Delaware and Lehigh Valleys until 9 p.m. as we await the arrival of downpours and thunderstorms this evening and tonight.EXCLUSIVE: Body Of Missing 26-Year-Old Casey Johnston Recovered, Believed To Have Been Killed In Crash, Authorities Say
It appears the storm threat could come in two close successive waves — one that will impact more the northern half of the area and the second, more the southern half.
The current severe thunderstorm watch accounts for the first wave of activity. The National Weather Service may issue a second watch this evening.
A few isolated cells may start to fire in the next couple of hours with more organized activity moving into our far western counties after 6 p.m. The main timeframe of concern for Philly and the I-95 corridor looks to be between 8 p.m. and 1 a.m.READ MORE: Man Cleaning Gun, Shoots And Kills 22-Year-Old Girlfriend In Bustleton, Philadelphia Police Say
The storm threat will persist until 3 a.m. for the shore and Delaware.
The main threat is damaging winds. Small hail is possible. Heavy downpours and frequent lightning are likely.
Localized flooding is a concern, so if you can stay off the roads tonight, please do so.MORE NEWS: Colts' Carson Wentz Choosing Rest, Rehab For Foot Injury, Remains Out Indefinitely
Unfortunately, water rescues are common in our area during these types of events.