Sudden Flood Warning in Northeast U.S. as IDA Continues, 5+ Inches of Rain Expected Overnight

This is the fourth time this year, a tropical system or its remnants is set to pass over southern New England. First Elsa, then Fred, Henry, and now Ida. In fact, in some areas, Ida can bring more devastation. While it will be moving fast, torrential rain is expected overnight, it may occur heaviest rain Boston have seen all summer. Noting that, Boston has received 17 inches of rain over the past two months and had the third hottest summer on record.

The peak of the storm usually occurs after 11 pm, and it is expected that there will be torrential rains in the entire area between 11 pm and 7 am. A flash flood warning has been issued in most of the places of Massachusetts till Thursday morning.

There is the likelihood of high flooding in parts of the Massachusetts region, something that has never been seen in 1 in 10 years. This would indicate heavy flooding not only in urban regions but also in smaller rivers. Basements flood and roads that are prone to washing can easily flood overnight.

Flood warning in Northen U.S.

High Stake Rain Fall Zone

Although it was initially thought that southern New England, including the Cape and Islands, would receive the most rainfall, that forecast has changed slightly.

The center of the remnants of Ida is now estimated to be located in southeast Mass. (A few days ago it looked like they would move to the south of our region). With this change in course, Mass Pike and nearby areas to the north are now at bigger risk of receiving high-end rainfalls. It also includes parts of southern New Hampshire, Vermont, and Maine.

How much rain is the forecast?

It is estimated that 2.5 to 5 inches of rain throughout southern New England overnight. In the worst case, it would be 6 to 7 inches of rain in some remote areas. The Cape and Islands may receive slightly less rain in the neighborhood of 1 to 2 inches of rain, as they will be on the south side of the track. Precipitation will come more in the form of scattered convection (storm) and will be highly variable from one place to another.

Serious Concerns:

However, with the high probability of inclement weather in the Mid-Atlantic States, most of the regions will not need to be concerned about strong thunderstorms. This high-risk area extends offshore and bisects the southern coast of New England.

Late Wednesday, a tornado warning was issued for the southern coast and parts of Cape Cod. The tornado watch is in effect until 7 a.m.

High risk of wind gusts

Though winds from this storm will remain above ground level, there is a significant risk of wind gusts between 30 and 45 mph along the east coast and southeastern coastal areas of Massachusetts early Thursday. Usually, winds of this speed do not cause much damage on the coast but estimated the amount of rainfall saturating the ground, some trees may fall down and some scattered lightning is possible in the areas.

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