Weekend Ice Jam Threat - NBC Connecticut
On Ryan's Radar

On Ryan's Radar

First Alert Meteorologist Ryan Hanrahan Gives You His Take on Connecticut's Weather

Weekend Ice Jam Threat

On Ryan's Radar

NBC Connecticut First Alert meteorologist Ryan Hanrahan gives you the science behind the forecast and shares with you an in-depth look at the weather impacting Connecticut.

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Overnight Forecast October 17, 2019
salman2 - stock.adobe.com
landscape close-up ice drift on the river in the spring on a sunny day

It's been a while since we had a serious ice jam flood in Connecticut. In January 1994 a rapid January thaw following a bitterly cold month caused all sorts of problems. As the snow melted and the rain fell rivers rose rapidly and huge chunks of ice broke apart across the state. 

Southbury Pomperaug Ice Jams in 1994Southbury Pomperaug Ice Jams in 1994

(Published Thursday, Jan. 11, 2018)

On the Pomperaug River in Southbury a 2.5 mile ice jam lasted for weeks sending the river surging into neighborhoods. In Baltic the Shetucket River was jammed for about a mile flooding 75 homes and businesses in the Sprague village. 

Baltic Flooding in January 1994Baltic Flooding in January 1994

(Published Thursday, Jan. 11, 2018)

The National Weather Service estimated nearly a foot of ice is on our local rivers which is unusual for Connecticut. This is the kind of ice you'd expect to see in Vermont, New Hampshire or Maine. Heavy rain and melting snow means ice jams are unsually likely in Connecticut. Hopefully these ice jams occur in rural areas or, even better, don't occur at all!

Be on the lookout for sudden rises in rivers over the weekend as ice jams can develop across the state.