Thunderstorms capable of causing flash flooding will continue to occasionally cross the New York City area during Labor Day.
Runoff from one such thunderstorm forced police to close an intersection in Ridgewood, N.J., Sunday morning.
Motorists should prepare for similar incidents and the resultant delays on area streets, highways, expressways and interstates as the holiday weekend progresses and additional drenching thunderstorms arrive.
Not every thunderstorm will lead to flooding, but the threat is present for localized problems to occur.
Even where flash flooding does not ensue, the downpours will bring reduced visibility and a heightened risk of vehicles hydroplaning to motorists.
Airline passengers at the city's three major airports may also encounter delays and headaches.
Those with outdoor plans should prepare to move inside for a time or make indoor alternatives. Officials may be forced to temporarily halt play at the U.S. Open in Flushing.
The good news is that there will still be rain-free intervals through Labor Day.
Residents and visitors should just stay alert for changing weather and seek shelter when storm-related warnings are issued or thunder is heard. For the latter, you are then close enough to get struck by lightning.
While lightning and flooding downpours are the greatest concerns from the thunderstorms through Labor Day, an isolated number producing damaging winds and hail cannot be ruled out.
Steamy air in place across the Northeast and the New York City area is setting the stage for the heavy thunderstorms.
A cold front will gradually sweep away the steamy air on Tuesday, leading to another shower or two this day and giving way to a dry, seasonable and less humid day for Wednesday.
Watch the latest edition of AccuWeather LIVE, covering updates on the winter storm that is impacting the Ohio Valley and the South.
A slight spike in temperatures will arrive in the city right in time for the first official day of the spring season, March 20, 2013.
In the wake of the snowstorm that stayed south of New York City, temperatures will rebound well into the 50s later in the week.
In the wake of the snowstorm that blasted much of West Virginia and slipped south of Pittsburgh, temperatures will rebound well into the 50s later this week.
In the wake of the snowstorm that grazed southern Pennsylvania, temperatures will rebound into the 50s in the region late in the week.
In the wake of the late-season snowstorm, temperatures will climb well into the 50s around Philadelphia late in the week.
Mid Atlantic (1945)
Early "heat wave": Location: Temperature(F): Norfolk, VA 90 degrees Raleigh, NC 92 degrees Charlotte, NC 90 degrees Greensboro, NC 90 degrees Richmond, VA 91 degrees Sussex, NJ 90 degrees Hammonton, NJ 90 degrees Reading, PA 85 degrees (16th-17th) St. Patrick's Day snowstorm: New England, New York & Pennsylvania. Blue Hill Observatory outside Boston reported 12.6". Some spots had 20", crippling winds accompanied the storm.
Snake River, WY (1906)
Minus 50 degrees -- lowest ever for March in 48 United States.
Chicago, IL (1970)
14" of snow.