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Flash flood warning concerns were reported for parts of the Jersey Shore on Thursday, Nov. 12, as a strengthening low-pressure system moved across central and southern New Jersey. The National Weather Service also warned that severe thunderstorms could produce large hail, damaging winds and an isolated tornado.
The fast-moving weather system brought a heightened risk of dangerous conditions during the afternoon and early evening. Forecasters said the combination of warm, moist air near the ground and colder air higher in the atmosphere could help powerful storm cells develop quickly.
Urgent Flash Flood Warning and Severe Storm Threat
According to the National Weather Service, the low-pressure system was intensifying through Thursday afternoon. That development increased the potential for rapidly forming thunderstorms capable of producing intense rainfall and localized flooding.
Mike Lee, a lead meteorologist at the National Weather Service office in Mount Holly, said the most significant weather was expected during the afternoon and possibly into the early evening. He noted that storms could develop at the surface and continue rising through the atmosphere, creating conditions favorable for stronger cells.
The Storm Prediction Center said temperature differences between the storm system and a warm front could support the formation of supercells. These rotating storm structures can bring several hazards at once, including:
- Large hail that can damage vehicles, roofs and crops
- Strong, potentially destructive wind gusts
- Periods of intense rainfall and poor visibility
- Localized flash flooding in low-lying areas
- A possible tornado in the strongest storm cells
Why the Jersey Shore Could See Rapid Flooding
Flash flooding can occur with little warning when heavy rain overwhelms drainage systems, streams and roadways. Shore communities may face added concerns because of low-lying streets, saturated ground and areas vulnerable to runoff.
Residents and drivers were urged to remain alert as conditions changed quickly. Even when rainfall appears to ease, water may continue flowing into roads and neighborhoods. Motorists should never drive through flooded roadways because water depth and current strength can be difficult to judge.
The storm threat was expected to continue into Thursday night, with scattered showers and lingering thunder possible after the most intense storms passed. The National Weather Service’s guidance emphasized the need to monitor updated alerts and local emergency information.
Colder Weather Arrives Behind the Storms
New Jersey was expected to experience a sharp change in temperatures on Friday. Highs were forecast to remain in the middle to upper 40s, while overnight temperatures into Saturday morning could fall into the upper 20s and lower 30s across much of the state.
The sudden shift from warm, humid conditions to colder air could create additional challenges for residents dealing with storm damage, power interruptions or flooded roads. People should check on vulnerable neighbors, secure loose outdoor items and keep emergency supplies available.
Weather officials recommend having several ways to receive warnings, including local alerts, weather radio and official emergency notifications. If a tornado warning is issued, residents should move to an interior room on the lowest safe floor and stay away from windows.
What Residents Should Do During a Flash Flood Warning
- Move to higher ground if water begins rising nearby.
- Avoid walking or driving through moving water.
- Stay indoors during severe thunder and hail.
- Bring in outdoor furniture and other loose objects.
- Keep phones charged and watch for updated alerts.
- Call emergency services only when immediate help is needed.
The National Weather Service and local authorities continued tracking the system as it moved through New Jersey. Conditions could vary significantly from one neighborhood to the next, making real-time alerts especially important for residents near the Jersey Shore and in central and southern parts of the state.
The storm system’s main hazards were expected to ease later Thursday night, but lingering showers, wet roads and isolated flooding could remain concerns. Drivers should allow extra travel time and be prepared for sudden changes in visibility.
Frequently Asked Questions
What is a flash flood warning?
A flash flood warning means flooding is occurring, imminent or highly likely in a specific area. People should move to higher ground and avoid flooded roads immediately.
When was the New Jersey storm threat expected to peak?
The strongest storms were expected during the afternoon and early evening on Thursday, Nov. 12, with showers and some thunder potentially continuing overnight.
What hazards could the storms produce?
Forecasters warned of large hail, damaging winds, intense rainfall and the potential for a tornado, particularly if supercells developed.
How cold will New Jersey become afterward?
Friday highs were expected to reach only the middle to upper 40s. Overnight temperatures could fall into the upper 20s and lower 30s.
