NWS: Rapid monitoring of floods due to tropical overvoltages



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Here we are again with more rain and the timing could not be worse.

This time it is caused by Tropical Storm Michael.


Mean precipitation is between 1 and 1.5 inches, with locally higher amounts ranging from 2 to 4 inches.

Heavy rainfall over a period of 1 to 3 hours may result in flash flooding. The highest precipitation is expected in and around New York, as well as parts of Long Island and southern Connecticut.




According to the hourly forecasts of the National Meteorological Service, the best chance of rain is between noon and three o'clock in the morning.

The highest probability of thunderstorms and heavy rain is from 3am to 6pm. – Bad timing for PM trips.



Over the last three weeks, heavy rains have flooded local streets and major highways, such as Merritt Drive and I-95, during the afternoon, heading to the area. -midday. On September 26, up to 8 inches fell on Southwest Connecticut. And on October 3, nearly 4 inches of rain fell over a short period


Because of the rain, the NWS has put in place an instant flood alert for Connecticut and the New York metro area.

There is also a coastal flood warning for the shores of Fairfield County and New Haven County. High tide should be about a foot above normal. High tide is around 13h30. Thursday and Friday 2h. For specific schedules, click here.

"As tropical moisture rises north from Virginia and North Carolina, showers and thunderstorms are expected to form in the afternoon," he says.

"The rain can sometimes become strong and can cause flooding problems, so flash flood monitoring remains in effect. A few thunderstorms could also produce gusty winds late this afternoon, mainly in and around the greater metropolitan area of ​​New York, where high temperatures will reach 80 ° C and greater instability could develop than in the surrounding areas. further north and east.

"The rain will continue tonight, especially along the Connecticut coast, when a cold front settles in the area and that extra tropical moisture interacts with that front.

"As the front moves into the sea and the remaining Michael Depression moves south east of Long Island on Friday, the northwest winds will increase, especially along the coast, where a few bursts of 35 to 40 mph are possible. A much colder and drier air will also come in, with high temperatures only in the 60s. Even cooler air will come in at the weekend as the high pressure moves. "


The forecasts

Today & # 39; hui: Showers and possibly a thunderstorm, mainly before 3 pm, then showers and thunderstorms after 3 pm. Some of the storms could produce gusty winds and heavy rains. High near 77. Wind south 7 to 11 mph. The probability of precipitation is 100 percent. New precipitation is between three quarters and one inch.

Tonight: Showers and thunderstorms before 7 pm, then showers and possibly thunderstorms, mainly after 7 pm. Some of the storms could cause heavy rainfall. Wind southwest 5 to 8 mph shifting to the northwest after midnight. The probability of precipitation is 90 percent. New precipitation is between three quarters and one inch.

Friday: Scattered showers before 8am. Cloudy until mid-morning, then clearing, with a constant temperature around 62. Breezy, with a north wind of 18 to 22 mph, with gusts of up to 33 mph. The probability of precipitation is 30%.

Friday night: 20 percent chance of showers after midnight. Partly cloudy, with temperatures around 47. Wind northwest 8 to 11 mph.

Saturday: 30 percent chance of showers, mostly before 3 pm. Partly sunny, with a maximum of nearly 56. Westerly winds from 6 to 10 mph.

Saturday night: Partly cloudy, with temperatures around 46.

Sunday: Rather sunny, with a maximum of almost 60.

Sunday night: Cloudy, with minimum temperatures around 51.

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