The remnants of Hurricane Ida will be impacting New England Wednesday night into Thursday, bringing inches of rain and strong gusts. The National Weather Service regularly prepares forecasts & graphics ahead of significant storms, and we have consolidated this information here.

Learn how to prepare for and stay safe during a flood by clicking here.

We will update this post as we receive more information, from both the NWS as well as the City of Lynn.
Updates will be listed in order of most recent updates first.

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FINAL UPDATE: Thursday, Sept. 2 at 11:30am

The National Weather Service has announced their unofficial rain observations from the remnants of hurricane Ida. Appreciation is extended to COCORAHS and NWS cooperative observers, Skywarn spotters and media for these reports. This summary can be found by clicking here.

As of Thursday, Sept. 2, 2021 at 8:10am the City of Lynn was reported to have received 4.36 inches of rain.

The following advisories are still in place:

• Flood Warning until Thursday at 1PM
• Small Craft Advisory until Thursday at 4PM

The graphic below is courtesy of the National Weather Service’s Eastern Region HQ. They state: “Updated observed rainfall totals for the last 48 hours ending 9 am Thursday September 2nd. Rainfall rates at some locations were 2.5-3.5 inches per hour. Newark NJ received 3.24″ between 8 and 9 pm, and Central Park saw 3.15″ from 9 to 10 pm, both all time records for highest 1-hour rainfall totals.”

Preliminary observed rainfall reports from Wednesday into Thursday morning across MA, RI & CT. Rare high end flooding with numerous road washouts occurred in parts of CT, RI and southeast MA.

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Flash Flood Warning ISSUED WEDNESDAY NIGHT until THURSDAY AT 7AM

The National Weather Service in Norton has issued a Flash Flood Warning for Northern Norfolk, Suffolk, Southeastern Essex, & Southeastern Middlesex County in until 700 AM Thursday.

At 1001 PM Wednesday night doppler radar indicated heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts of 2 to 4 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

At 11:02 PM Wednesday night doppler radar indicated heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts of 2 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD | Flash flooding caused by heavy rain.

SOURCE | Radar.

IMPACT | Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

Some locations that will experience flash flooding include Boston, Cambridge, Quincy, Lynn, Newton, Somerville, Framingham, Waltham, Malden, Brookline, Medford, Weymouth, Revere, Peabody, Arlington, Everett, Salem, Billerica, Beverly and Marlborough.

PRECAUTIONARY/PREPAREDNESS ACTIONS | Be especially cautious at night when it is harder to recognize the dangers of flooding.

FLASH FLOOD | RADAR INDICATED

Additionally the following advisories were also made. More info can be found by clicking here.

• Wind Advisory | Thursday from 3AM – 1PM
• Flash Flood Watch | Until Thursday at 2PM
• Gale Watch | Thursday from 4AM – 5PM

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Update from NWS – WEDNESDAY, SEPT. 1st at 1:15Pm

Here’s a general overview timing out our flooding rain & localized severe weather event. Peak of the event with the greatest impacts are expected overnight into early Thurs AM.

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Update from NWS – WEDNESDAY, SEPT. 1st at 4:30Am

The remnants of Ida will bring 2.50″ to 5″ of rain with isolated 6-7″ amounts possible tonight into Thu am. The potential exists for rare high end urban & small stream flash flooding. Basement flooding & even a few road washouts are possible.

Click graphic for full-resolution image

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Update from NWS – Tuesday, August 31st at 5:25Pm

Flash Flood Watch for ALL of CT, RI & MA. A rare HIGH RISK for excessive rains is in effect for much of central and southern CT for Wed Nite-Thurs.Two to four inches of rain are expected, with localized amounts up to 6 inches are possible.Impacts: Urban/poor drainage flooding along with sharp rises on rivers and waterways. Significant flooding possible, including road closures or road washouts as roads become inundated with too much water. Impact to Thu AM commute.

HIGH risk in much of central & southern CT, with most of the remainder of Southern New England in a moderate risk. We’ve attached an infographic from NOAA NWS Weather Prediction Center to add context to what a HIGH RISK of excessive rain means. They are rare issuances (about ~4% of all days) but areas in a high risk of excessive rain experience a disproportionally greater share of flood-related damage nationally.

Click graphic for full-resolution image

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Update from NWS – Tuesday, August 31st at 2Pm

Substantial risk for heavy rainfall capable of flash flooding Wed nite & Thurs as Ida’s remnants move through. Greatest risk is in the area shaded in red though remains elevated even in the area shown in yellow.

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Update from NWS – Tuesday, August 31st at 4:30am

The remnants of Ida will bring very heavy rainfall to the region Wed night into Thu. While the axis of heaviest rain is uncertain, the potential exists for a narrow swath of very significant flooding.

Click graphic for full-resolution image

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Graphics & information courtesy of the National Weather Service’s Boston/Norton, MA