Heavy rain threat prompts flood watch for parts of the state - WFSB 3 Connecticut

Early Warning Weather Day

Heavy rain threat prompts flood watch for parts of the state

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National Hurricane Center posted this graphic of the track of Tropical Storm Joaquin National Hurricane Center posted this graphic of the track of Tropical Storm Joaquin
HARTFORD, CT (WFSB) -

Connecticut will be going from dry to soaking wet.

High humidity levels Tuesday prompted some spotty showers in parts of the state, but more rain is expected Tuesday night and Wednesday.

With a posted flood watch for Hartford, northern Litchfield, Tolland and Windham counties from Tuesday night into Thursday morning, an Early Warning Weather Day was declared.

A coastal flood advisory was issued for Fairfield and New Haven counties from 6 a.m. Thursday until 6 a.m. on Friday.

"Scattered showers are likely this evening, but a steadier and heavier rain will likely develop especially after midnight," said Chief Meteorologist Bruce DePrest, adding that there could even be a thunderstorm possible as a cold front approaches.

Keep an eye on Early Warning Pinpoint Doppler here.

DePrest said rain will be heavy at times on Wednesday, and it could even come down at 1 inch per hour in some of the heavier downpours.

"The rain will tend to taper off to scattered showers in the afternoon and evening," DePrest said.

He added that a general 1 to 3 inches of rain can be expected across the state, but 4 inches or more could fall in Massachusetts and portions of northern New England.

Highs on Wednesday will be around 70 degrees, "but temperatures will likely trend downward during the afternoon as the cold front moves through and a north to northeasterly flow of cooler air develops."

Highs on Thursday will be in the upper 50s and lower 60s with some spotty rain. A heavier band of rain will likely move in Thursday night and Friday.

There is a potential for heavier rain on Friday with temperatures only in the 50s.

As of Tuesday, Tropical Storm Joaquin was still centered between the Bahamas and Bermuda.

DePrest said while the storm is moving toward the west right now, it will shift and move north or northeast over the coming days.

"The GFS and European models no longer have Joaquin moving up the Atlantic Seaboard toward New England this weekend," DePrest said. "Instead, both models keep Joaquin well offshore."

However, there is still the potential for heavy rain during the weekend.

To read the complete technical discussion, click here.

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