STORM WATCH: Multiple rounds of heavy rain, thunderstorms to impact Long Island through Monday night with an increasing risk of flash flooding
Flooding is the primary concern through Tuesday, with localized rainfall totals capable of exceeding 4." A few storms tonight could also produce gusty winds, while improving conditions are expected beginning Wednesday.
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What to expect
Multiple rounds of showers and thunderstorms through Monday night.
Heavy rainfall may lead to flash flooding, especially in poor drainage and flood-prone locations.
Localized rainfall totals of 2" to 4," with isolated higher amounts possible.
A few stronger storms tonight may produce gusty winds.
Rain gradually tapers Tuesday, with improving conditions by Wednesday.
Warmer and more humid weather returns late week with another chance of showers and thunderstorms Friday into Saturday.
Weather alerts
A flood watch is in effect through Tuesday morning for all of Long Island. Heavy rainfall from repeated rounds of showers and thunderstorms may result in flash flooding, especially in urban, poor drainage and low-lying areas.
Forecast
Tonight: Showers and thunderstorms become widespread after midnight. Heavy rain is likely at times, with localized flooding possible. Overnight temperatures will be in the mid-60s.
Monday: Periods of showers and thunderstorms continue throughout the day. Some storms may produce torrential rainfall, leading to flash flooding. Temperatures will reach the upper 70s.
Monday night: Rain and thunderstorms continue with another round of heavy rainfall possible before gradually diminishing late. Temperatures will be in the mid-60s.
Tuesday: Showers gradually become more scattered through the day, with a few thunderstorms still possible during the afternoon. Temperatures will range from the upper 70s to the low 80s.
Wednesday: Partly sunny, less humid and much quieter weather returns. Temperatures will be in the low to mid- 80s.
Thursday: Mostly sunny and warmer, with increasing humidity. Temperatures will be in the upper 80s.
Friday: Partly sunny, hot, and humid with scattered afternoon and evening showers and thunderstorms possible. Temperatures will reach the upper 80s to low 90s.
Saturday: Warm and humid, with a continued chance for scattered showers. Temperatures will be around 90.
