Many events involve local, state, and federal responses. It might help to check town documents too.
| Name | Place | Date | Sources |
| 1798 New England Blizzard | Connecticut, New Hampshire, Maine and New York | Nov. 17-21, 1798 | Natural Disasters [CSL Call Number GB 5014.N373 2001] ; Hartford Courant |
| 1888 Blizzard | Northeast U.S. | March 11, 1888 | Hartford Courant, See CSL Flickr account for images |
| 1978 Blizzard | Northeast U.S. | Feb. 6-7, 1978 | Hartford Courant |
| 1996 Blizzard | East Coast, from Carolinas northward | December 1992 | Hartford Courant, Connecticut's Declared Natural Disasters. |
| October Snowstorm | October, 2011 | ||
| Nor'easter | December 1992 | Hartford Courant, Connecticut's Declared Natural Disasters. |
| Name | Place | Date | Sources |
| Danbury Reservoir Dam Burst | Danbury, CT | January 31, 1869, approx. 7 pm | "Frozen Reservoir Destroys Danbury – Today in History: January 31", ConnecticutHistory.Org, https://connecticuthistory.org/frozen-reservoir-destroys-danbury-today-in-history/(Accessed 2 June 2015, Updated 9 Sept. 2020) |
| 1936 Flood | New England | March 12, 1936 | Hartford Courant |
| 1955 Floods (see Hurricanes Connie & Diane) | Connecticut | Mid-August, 1955 | Hartford Courant ; Connecticut State Archives |
| Norwich Dam Breaks | Norwich, CT | March 1963 | |
| June, 1982 | June, 1982 | Hartford Courant, Connecticut's Declared Natural Disasters. | |
| May, 1984 | May, 1984 | Hartford Courant, Connecticut's Declared Natural Disasters. | |
| Tropical Storm Floyd | September, 1999 | Hartford Courant, Connecticut's Declared Natural Disasters. |
| Name | Place | Date | Sources |
| 1804 Snow Hurricane (aka Storm of October 1804) | East Coast, Caribbean to Canada | October 4-11, 1804 | Wikipedia contributors, "1804 Snow hurricane," Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=1804_Snow_hurricane&oldid=658873423 (accessed May 29, 2015, updated 16 March 2021). |
| Great September Gale of 1815 | Long Island, NY through New Hampshire | September 23-24, 1815 | Wikipedia contributors, "1815 New England hurricane," Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=1815_New_England_hurricane&oldid=658888168 (accessed May 29, 2015, update 16 March 2021). |
| 1938 Great New England Hurricane (aka Long Island Express) Post-hurricane aerial photos |
Northeastern U.S. | September 21, 1938 | Natural Disasters [CSL Call Number GB 5014.N373 2001] Hartford Courant |
| 1944 Great Atlantic Hurricane | New England | September 15, 1944 | Hartford Courant |
| 1954 Hurricane Carol | New England | August 31, 1954 | Hartford Courant |
| 1955 Hurricanes (Connie & Diane) | North Carolina, Virginia, Maryland, Pennsylvania, New York, New Jersey, Connecticut, Rhode Island & Massachusetts | mid-August 1955 | Natural Disasters [CSL Call Number GB 5014.N373 2001] Hartford Courant |
| Hurricane Gloria | Connecticut | September 27, 1985 | |
| Hurricane Bob | Connecticut | August 30, 1991 | |
| Hurricane Irene | East Coast including Connecticut | August 28, 2011 | |
| Storm Sandy | East Coast | October 2012 | |
| Tropical Storm Isaias | East Coast | August 4, 2020 | FEMA Declared Disasters https://www.fema.gov/disasters/disaster-declarations?field_dv2_state_territory_tribal_value=CT&field_year_value=All&field_dv2_declaration_type_value=All&field_dv2_incident_type_target_id=All |
| Name | Place | Date | Sources |
| www.tornadoproject.com | |||
| Great Wallingford Tornado (and waterspout) | Plains section of Wallingford, CT | August 9, 1878 | "The Great Wallingford Tornado – Today in History: August 9," ConnecticutHistory.Org, https://connecticuthistory.org/the-great-wallingford-tornado/ (accessed 2 June 2015, Updated 9 Sept. 2020) |
| Tornado of 1979 | Windsor Locks | October 4, 1979 | Hartford Courant, Connecticut's Declared Natural Disasters. |
| July 10, 1989 | Cornwall | July 10, 1989 | Hartford Courant, Connecticut's Declared Natural Disasters. |
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