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Southern New London storm history

Storm events recorded in Southern New London, Connecticut between 1950 and 2025.

150
Total events
0
Tornadoes
0
Hail
12
Floods
0
Deaths
$2.8M
Property damage

Most significant events

Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.

August 4, 2020 · Southern New London, Connecticut
Tropical Storm Tropical Storm$1.5M damage
Numerous trees and power lines were downed throughout the county. This resulted in numerous power outages. Groton-New London Airport reported a maximum sustained wind of 46 mph at 356 pm LST and a peak gust of 58 mph at 437 pm LST. The Stonington Weatherflow site reported a maxim…
December 26, 2025 · Southern New London, Connecticut
Heavy Snow Heavy Snow
Cocorahs reported 8.0 inches at 1.7 NNE Old Lyme, 71. inches in New London, 6.5 inches in Niantic, 6.5 inches in East Lyme, 6.1 inches in Mystic, and 5.6 inches in Stonington.
December 19, 2025 · Southern New London, Connecticut
High Wind High Wind
A measured high wind gust of 67 mph occurred at KGON - Groton Airport at 1101 AM Local Standard Time, and an estimated gust of 66 mph was recorded at mesonet station XSTO - Stonington Outer Breakwater 4, approximately 1 mile south of Stonington Point at 1103 AM Local Standard Tim…
December 13, 2025 · Southern New London, Connecticut
Winter Weather Winter Weather
Cocorahs observers reported 4.0 inches at 1.7 NNE Old Lyme, 3.5 inches at Old Lyme, 3.1 inches at New London, 2.9 inches in Mystic, 2.7 inches at 0.5 NE Ledyard, and 2.7 inches in Pawcatuck and Waterford.
October 13, 2025 · Southern New London, Connecticut
Strong Wind Strong Wind
Connecticut Department of Highways reported that at 1043 AM Local Standard Time, Route 85 in Montville, CT was closed in both directions between Day Road and Daisy Hill Road because of a tree on the roadway with wires down.
February 8, 2025 · Southern New London, Connecticut
Winter Weather Winter Weather
An accumulating snow fell during the late evening and into a portion of the overnight across the zone. Cocorahs reported 5.0 inches at 1.7 NNE Old Lyme, 4.7 inches at New London, 4.6 inches at Mystic, and 4.2 inches at Waterford. A trained spotter reported 4.5 inches at 3 SSE Gal…
February 13, 2024 · Southern New London, Connecticut
Winter Weather Winter Weather
Wet snow accumulated across Southern New London County, but warning criteria snow was met in consistent fashion just north of the northern boundary of the zone. There was one report of 6.0 inches at 1 NNE New London, but it was the only report of 6 inches. Stonington only reporte…
January 14, 2024 · Southern New London, Connecticut
High Wind High Wind
A measured high wind gust of 60 mph occurred at a mesonet station at Stonington Outer Breakwater, CT at 249 PM Local Standard Time.
January 13, 2024 · Southern New London, Connecticut
High Wind High Wind
A measured high wind gust of 62 mph occurred at a mesonet station at Stonington Outer Breakwater, CT at 704 AM Local Standard Time. In addition, a sustained wind of 40 mph was measured at ASOS station KGON (Groton Airport) at 640 AM Local Standard Time.
January 13, 2024 · Southern New London, Connecticut
Coastal Flood Coastal Flood
Moderate coastal flooding occurred at the New London NOS tidal gauge, with water levels above the moderate threshold of 6.0 ft MLLW from 854 AM EST to 1148 AM EST, and a peak water level of 6.6 ft MLLW from 1000 AM EST to 1112 AM EST.
January 10, 2024 · Southern New London, Connecticut
Coastal Flood Coastal Flood
Moderate coastal flooding occurred at the New London NOS tidal gauge, with water levels above the moderate threshold of 6.0 ft MLLW from 600 AM to 800 AM EST, and a peak water level of 6.2 ft MLLW at 730 AM EST.
December 18, 2023 · Southern New London, Connecticut
High Wind High Wind
A measured wind gust of 62 mph was recorded at a mesonet station located at Stonington Outer Breakwater, CT at 1014 AM Local Standard Time. A measured wind gust of 59 mph was recorded at a mesonet station located at Northwest Street in Stonington, CT at 1025 AM Local Standard Tim…
February 27, 2023 · Southern New London, Connecticut
Winter Weather Winter Weather
Cocorahs observers reported 4.0 inches in Groton, 3.0 inches in Niantic, 3.0 inches in Old Lyme, and 4.3 inches in Mystic. A trained spotter reported 3. 4 inches at 1 NNE Groton.
December 23, 2022 · Southern New London, Connecticut
High Wind High Wind
Multiple instances of downed trees with road closures occurred across Southern New London County as reported by the CT Department of highways. This included a tree with wires down in Gales Ferry, CT on Route 12 at Long Cove Road at 722 AM Local Standard Time and a tree with wires…
February 25, 2022 · Southern New London, Connecticut
Winter Weather Winter Weather
The Groton ASOS reported 0.06 inches of flat ice accretion and 0.5 to approximately 2 inches of snow / sleet were reported across all of New London County, with the lower half inch amounts across Southern New London.
February 18, 2022 · Southern New London, Connecticut
High Wind High Wind
Multiple high wind gusts occurred over Southern London County. A gust of 60 mph was recorded at Groton Airport at 540 AM Local Standard Time. At nearby New London Ledge Light (2 miles south of Groton), a gust of 62 mph was recorded at 66 ft above ground at 556 AM Local Standard T…
February 13, 2022 · Southern New London, Connecticut
Winter Weather Winter Weather
A trained spotter reported 5.7 inches of snow from 1 S New London.
January 29, 2022 · Southern New London, Connecticut
Blizzard Blizzard
Numerous hours of 1/4 mile visibility with gusts over 35 mph with heavy snowfall as indicated by KGON ASOS, radar, and wind reports verified blizzard conditions across New London County. Peak wind gusts of 57 mph was reported at NDBC 2 S Groton, 57 mph at Stonington Outer Breakwa…
January 28, 2022 · Southern New London, Connecticut
Winter Storm Winter Storm
There were numerous snowfall reports of 20 inches or more; with public reports of 21.0 and 20.0 inches in Groton and Niantic. Peak wind gusts of 57 mph was reported at NDBC 2 S Groton, 57 mph at Stonington Outer Breakwater, and 65 mph at USGC Academy mesonet just north of New Lon…
January 7, 2022 · Southern New London, Connecticut
Winter Weather Winter Weather
A trained spotter reported 5.3 inches of snow in Ledyard, and a public report came in with 5.1 inches from Ledyard Center.
November 12, 2021 · Southern New London, Connecticut
High Wind High Wind
An estimated wind gust of 64 mph occurred at Groton Airport at 130 PM Local Standard Time.
October 27, 2021 · Southern New London, Connecticut
High Wind High Wind
Multiple reports of high winds, including a gust of 70 mph measured at an elevation of 55 feet at the US Coast Guard Academy in New London at 638 AM Local Standard Time and a gust of 64 mph measured at 635 AM Local Standard Time at Stonington Outer Breakwater.
August 22, 2021 · Southern New London, Connecticut
Tropical Storm Tropical Storm
An observation from the U.S. Coast Guard Academy measured a sustained wind of 44 mph at 1021 AM EST and a gust of 56 mph at 918 AM EST. The ASOS at New London Airport (KGON) gusted to 53 mph at 1003 AM EST. Winds across this area were generally sustained at 35 to 45 mph with gust…
July 9, 2021 · Southern New London, Connecticut
Tropical Storm Tropical Storm
At the CT USCG Academy in New London a maximum sustained wind of 40 mph and peak wind gust of 47 mph was recorded at 1127am and 1136am LST, respectively. At the New London Airport ASOS, a 43 mph wind gust was recorded at 1130am LST. The highest sustained winds generally measured …
March 2, 2021 · Southern New London, Connecticut
High Wind High Wind
A measured gust of 64 mph was recorded 4 miles SE of Mystic at the Stongington Outer Breakwater mesonet station at 500 AM local standard time.
February 18, 2021 · Southern New London, Connecticut
Winter Weather Winter Weather
Trained spotters reported 4 to 6 inches of snow. A locally higher amount of 6.8 inches of snow was reported in New London. The Groton Airport ASOS recorded 0.06 inches of freezing rain.
February 7, 2021 · Southern New London, Connecticut
Winter Weather Winter Weather
Amateur radio, trained spotters, and the public reported 3 to 6 inches of snow.
February 1, 2021 · Southern New London, Connecticut
Winter Storm Winter Storm
The public reported 9.2 inches of snow in New London. The Groton Airport ASOS measured a 51 mph wind gust at 7:56 pm on February 1, 2021.
December 25, 2020 · Southern New London, Connecticut
High Wind High Wind
A measured wind gust of 65 mph was recorded in Groton at 433 AM local standard time.
December 16, 2020 · Southern New London, Connecticut
Winter Storm Winter Storm
CoCoRaHS and trained spotters measured 6 to 10 inches of snow. The Groton Airport ASOS measured a 48 mph wind gust at 11:40 am on December 17, 2020.
November 30, 2020 · Southern New London, Connecticut
High Wind High Wind
Multiple measured wind gusts of 60-65 mph recorded, including a measured wind gust of 61 mph at 246 PM local standard time at Groton Airport. Additionally, a mesonet measured sustained wind of 54 mph was recorded at 325 PM local time in Groton.
September 30, 2020 · Southern New London, Connecticut
High Wind High Wind
A measured sustained wind of 45 mph occurred at New London Ledge Light at 5:55 AM local standard time, which is 1 mile east-southeast of Neptune Park.
April 13, 2020 · Southern New London, Connecticut
High Wind High Wind
The ASOS at Groton New London Airport measured a 44 mph sustained wind at 323 pm, and a 56 mph wind gust at 331 pm.
February 7, 2020 · Southern New London, Connecticut
High Wind High Wind
The mesonet station in Neptune Park measured a 72 mph wind gust at 255 pm. The elevation of the site is 66 ft. The ASOS at Groton New London Airport measured a 59 mph wind gust at 249 pm.
November 1, 2019 · Southern New London, Connecticut
Strong Wind Strong Wind
The ASOS at Groton New London Airport measured a 56 mph wind gust at 312 am.
October 17, 2019 · Southern New London, Connecticut
High Wind High Wind1 injury
At 1206 am, a measured gust to 60 mph was reported at Groton New London airport. The broadcast media reported an injury due to the high winds in Neptune Park. Emergency crews extracted a person trapped from underneath a fallen tree and wires. This occurred in the area of Ocean Av…
October 16, 2019 · Southern New London, Connecticut
Coastal Flood Coastal Flood
A peak water level of 6.3 ft MLLW occurred at the NOS tidal gauge at New London at 2019-10-16 23:24. The moderate coastal flood threshold of 6.0 ft MLLW was exceeded from 2019-10-16 23:18 to 2019-10-16 23:36. Torrential rainfall may have contributed to these water levels.
July 21, 2019 · Southern New London, Connecticut
Heat Heat
The KGON ASOS recorded a heat index between 100 and 105 from 1500 to 1900 hours.
July 20, 2019 · Southern New London, Connecticut
Heat Heat
The KGON ASOS recorded a heat index between 95 and 105 from 1300 to 1700 hours.
March 3, 2019 · Southern New London, Connecticut
Winter Weather Winter Weather
CoCoRaHS reported 3 to 5 inches of snow.
March 2, 2019 · Southern New London, Connecticut
Winter Weather Winter Weather
Amateur radio reported 3 to 4 inches of snow.
February 25, 2019 · Southern New London, Connecticut
High Wind High Wind
The ASOS at Groton New London Airport measured a 41 mph sustained wind at 1120 am.
January 30, 2019 · Southern New London, Connecticut
Strong Wind Strong Wind
The ASOS at Groton New London Airport measured a 36 mph gust at 535 pm.
January 24, 2019 · Southern New London, Connecticut
Strong Wind Strong Wind
The ASOS at Groton New London Airport measured a 39 mph wind gust at 231 pm.
November 15, 2018 · Southern New London, Connecticut
Winter Weather Winter Weather
CoCoRaHS and trained spotters reported 4 to 5 inches of snow.
October 27, 2018 · Southern New London, Connecticut
Strong Wind Strong Wind
Social media reported a tree and wires down on Round Hill Road, which blocked the road at 1250 pm. This was in the town of Salem.
April 2, 2018 · Southern New London, Connecticut
Winter Weather Winter Weather
Trained spotters and the public reported 4 to 6 inches of snowfall.
March 21, 2018 · Southern New London, Connecticut
Winter Weather Winter Weather
Trained spotters and the public reported 3 to 5 inches of snow.
March 12, 2018 · Southern New London, Connecticut
Winter Storm Winter Storm
CoCoRaHS observers, trained spotters, broadcast media, and the public reported 10 to 18 inches of snowfall. Broadcast media reported that the heavy snow combined with strong wind gusts to bring down a tree along the right lane of route 32 in New London. The Groton-New London Airp…
March 7, 2018 · Southern New London, Connecticut
Winter Weather Winter Weather
CoCoRaHS observers reported 2 to 4 inches of snow.

Events by year

YearEventsTornadoes
202550
202450
202320
202270
202180
202070
2019100
2018100
201770
201650
201590
201450
201320
201250
201160
201030
200930
200830
200720
200640
200550
200420
200340
200250
200150
200040
199930
199810
199710
1996120