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Thunderstorms Approaching for Tonight

Discussion: For the most part this week, we’re going to have an upper low gradually weakening and ultimately fading away. But before that occurs, New Jersey should see a few periods of disruption, with the first being tonight.

A surface area low pressure will track from the WV/WMD area across EPA/NNJ towards Cape Cod. There is adequate instability, vertical wind shear, and a lifting mechanism (the low itself) to form thunderstorms of severe potential tonight. Lightning, gusty winds, and heavy downpours are pretty much a lock. Lesser probabilities (but still possibilities) include flash flooding and isolated tornadoes.

Tonight’s thunderstorms should be knocking on WNJ’s door by 7pm. They should then track across NJ from W/SW to E/NE through just after midnight for most of NJ. NWNJ could hang on to downpours and thunderstorms later tomorrow morning, possibly through rush hour.

The rest of Tuesday looks dry until later at night closer to Wednesday AM. Another area of rain and storms could pass through as the trailing low occludes. Another rain chance Friday followed by a dry weekend under high pressure influence. That’s at least what it looks like for now. I will have a weekly outlook posted tomorrow that will cover into the weekend. For now, let’s focus on the thunderstorms tonight.

In English: Expect rain and thunderstorms to push into NJ tonight from the W/SW. Should arrive at WNJ by 7pm, push through NJ by 2-3am, and clear out for Tuesday daylight hours. NNJ could hang onto rain and storms longer than the rest of NJ overnight. But the main period I am watching is tonight between 8pm and midnight. The most likely scenario are downpours, gusty winds, and lightning. A lesser likely scenario, but still possible, includes flash flooding and isolated tornadoes. Please have a plan of shelter and safety in-place. I’ll be monitoring and posting as soon as I can see how it’s hitting and where it’s going from there. Have a great night and please be safe! JC

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