NEW YORK, NY — After a short break from the humidity and severe storms, the New York City region is headed back into unsettled weather Tuesday. Forecasters say the day has been designated a First Alert Weather Day because strong to severe thunderstorms could bring flash flooding.
The more stable weather should hold through Monday, but conditions are expected to deteriorate again by Tuesday as moisture and cloud cover increase.
What weather is expected before the storms arrive?
Sunday night should stay clear, allowing temperatures to fall into a comfortable range. Lows are expected to be in the mid-60s in the city, the 50s across most suburbs, and even the 40s in areas farther north and west.
Monday is forecast to look much like Sunday, with plenty of sunshine, low humidity and highs in the lower to mid-80s. That would make for a quiet start to the work week before the next storm system builds in.
When could the strongest storms develop Tuesday?
Humidity is expected to rise Monday night into Tuesday morning, setting up a more unstable atmosphere. Forecasters say showers and isolated downpours could begin moving from west to east between 9 a.m. and 2 p.m.
After 2 p.m., the risk grows for very strong to severe thunderstorms. The main threats include damaging wind, large hail and heavy downpours, in a setup that resembles Saturday’s storm pattern but without the tornado risk.
How serious is the flood threat?
Officials say the flood risk is again on the high side because the air mass will be saturated and rain could fall at rates of 1 to 2 inches an hour. That kind of intensity would be enough to trigger flash flooding in vulnerable areas.
The ground is already wet from Saturday’s storms, which could make runoff worse and increase the chance of flooding if heavy rain repeats over the same locations.
What happens after Tuesday’s storms?
Storms should begin to fade after 11 p.m., though another round could still arrive on Wednesday. Once that threat passes Wednesday night, forecasters expect the rest of the week to turn drier and less humid.
High temperatures are likely to stay in the lower 80s for much of the week, running below normal for late July. That cooler-than-average stretch would follow the return of Tuesday’s stormy pattern.
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