The torrential downpour in a six hour period earlier in the week was a “200-year event,” said Matthew Belk, a meteorologist with the National Weather Service in Boston. Maura Healey issued a state of emergency following the “catastrophic flash flooding and property damage” in two counties and other communities.

“We have to make sure the pumps are working.” “I am hanging on, hoping and watching the forecast and looking for hot spots where it may rain and where there are breaks,” he said.

Heavy rain turned his swimming pool into a mud pit and filled his basement with 3 feet (91 centimeters) of water. In North Attleborough, Massachusetts, which was hit by heavy flooding Monday night, Sean Pope watched the forecast with unease. “The best thing you can do right now: Stay tuned for frequent updates,” McKee said. Dan McKee said on social media that the state’s emergency operations center was activated and would be monitoring the fast-changing weather conditions over the next few days. In Lincoln, Rhode Island, photos after the storm showed at least one roof damaged and the press box at the high school stadium tipped into the bleachers. The National Weather Service in Boston said radar data and videos showed it was likely that a tornado damaged trees and power lines in Rhode Island and Connecticut on Wednesday. The looming arrival of the hurricane threatened to unleash more violent storms on a region that earlier in the week saw 10 inches (25 centimeters) of rainfall over six hours and on Wednesday saw communities in Massachusetts and Rhode Island deal with tornado warnings and more heavy rain that opened up sinkholes and brought devastating flooding to several areas. A storm surge watch has also been issued for Cape Cod Bay and Nantucket with the potential for life-threatening flooding there late Friday and Saturday. (AP) - Hurricane Lee looks poised to wallop New England later this week even as the region still deals with the impact of days of wild weather that produced torrential rain, flooding, sinkholes and a likely tornado.Ī hurricane watch stretches from Stonington, Maine to the U.S.-Canadian border, where hurricane conditions, heavy rainfall and coastal flooding are possible Friday night and Saturday, the National Hurricane Center said Wednesday night.Īreas from Watch Hill, Rhode Island, to Stonington, Maine - including Block Island, Martha’s Vineyard and Nantucket - are under a tropical storm watch. If the radar animation of the last hours shows local thunderstorms or precipitation cells forming and disappearing in an irregular manner, then the forecast is not vey accurate.LEOMINSTER, Mass. The forecast works very well when weather fronts or large organized precipitation structures are moving regularly, without disappearing or being created. Real weather is more complex than just the displacement of existing precipitation cells. Longer forecasts are not possible, as new precipitation cells are developing or existing ones are disappearing within a short time. This so called precipitation nowcast is the most accurate precipitation forecast possible but the forecast horizon is limited to about an hour. The rain/snow forecast is computed by estimating the movement of precipitation cells observed by radar and extrapolating this movement into the future. Moreover, some countries do not operate a weather radar network, and in those countries satellite data is used to estimate rainfall, which is less accurate than a realtime weather radar.Ĭonnecticut: How accurate is the radar based forecast?

Note that lightning is not shown on the forecast, as it cannot be predicted. Light blue indicates drizzle, blue a medium intensity, and red and yellow indicate very strong precipitation, usually associated with thunderstorms.Ĭurrent lightning strikes are marked with small orange dots on the map (Europe only). The different colours indicate the intensity of rainfall or snowfall. The radar map is updated every 5 minutes with a new radar observation. The weather radar ( Connecticut) shows where it is currently raining or snowing.

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