Tornado warnings that were previously issued for Essex, Middlesex, and Worcester counties in Massachusetts, as well as Hillsborough and Rockingham counties in New Hampshire, have now expired. However, tornado watches are still in effect until 3 p.m. for various areas in New England.
Between 8 and 9 a.m., severe thunderstorms capable of producing tornadoes were reported in the Chelmsford/Lowell area of Massachusetts and the Manchester/Pelham area of New Hampshire. Another tornado warning was issued for the Raymond, New Hampshire, area just before 10 a.m. Shortly after, tornado warnings were issued for the Townsend, Massachusetts area, and the Brookline, New Hampshire, area. Additionally, an earlier tornado warning was issued around 6 a.m. Sunday for Berkshire County in Massachusetts.
There have been indications of a possible tornado touchdown in Maynard, Massachusetts, but no official confirmation has been made yet.
Severe thunderstorm warnings have also been issued for parts of Hampden, Hampshire, and Worcester counties in Massachusetts, as well as Tolland and Windham counties in Connecticut.
A tornado watch remains in effect until 3 p.m. for parts of Connecticut, Massachusetts, southern Maine, New Hampshire, and Rhode Island. This means that conditions are favorable for tornadoes and severe thunderstorms.
Flash flood warnings are also in effect for parts of Connecticut, New Hampshire, and Vermont on Sunday. As of 10:30 a.m., some areas have already reported over 2.5 inches of rain. A First Alert has been issued for flooding rainfall expected throughout the day, with storms and showers occurring intermittently. There is even a chance of severe weather.
Timing: A flood watch is in effect from 2 a.m. Sunday to 2 a.m. Monday for most of New England, as heavy rain is anticipated. Widespread rainfall of about 1-3 inches is forecasted, with some areas potentially receiving 3-5 inches or more.
Moisture transported from the Gulf of Mexico and the Atlantic, combined with atmospheric conditions, sets the stage for flash flooding, urban flooding, small stream flooding, and even river flooding across the northeast. Western New England, including the vicinity of Boston, is most likely to experience excessive rainfall, according to the Weather Prediction Center.
Showers and storms will intensify during the mid-morning hours, spreading from southwest to northeast. The heaviest rainfall and storms are expected in the afternoon and evening, persisting until midnight and the predawn hours of Monday.
Severe Storm Threats: While heavy rain dominates, there is a possibility of strong to severe embedded thunderstorms. These storms may bring higher rain rates of 2-4 inches per hour, lightning, and damaging straight-line winds, with a slight chance of a brief tornado.
The presence of an increasing low-level jet and atmospheric rotation indicates a 2% chance of a tornado occurring anywhere in New England.
Extended Outlook: On Monday morning, expect numerous flooded roads and low-lying areas, making early-morning travel hazardous.
Monday morning and afternoon will bring dry conditions and warm, sunny weather, with temperatures reaching the upper 80s. The favorable weather will continue for most of the following week.
Tuesday night may see some storms after another day in the 80s. Lower humidity and temperatures in the low 80s are expected on Wednesday and Thursday.
Scattered storms are predicted to return by Friday and continue into parts of the following weekend.
