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New Hampshire Flood Stories

576 first-hand accounts of flood events in New Hampshire, ranked by impact. Each is a NOAA-written narrative of the moment.

Flash Flood$6.0M damage

Grafton, NH · Jul 1, 2017

A very strong shortwave and associated cold front were approaching from the west on the morning of July 1st. Ahead of the front, a very warm and moist air mass was in place over New England with values of precipitable water around 2 inches.

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Flash Flood$235K damage

Cheshire, NH · Jul 17, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

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Flood$100K damage

Strafford, NH · Dec 23, 2022

Beginning on December 22nd a powerful storm was developing over the Ohio River Valley. On December 23rd the center of the storm was deepening rapidly (974mb) as it lifted through the eastern Great Lakes.

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Flash Flood$200K damage

Cheshire, NH · Jul 18, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

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Flash Flood$200K damage

Cheshire, NH · Jul 17, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

Read the full account →
Flash Flood$4.0M damage

Grafton, NH · Jul 1, 2017

A very strong shortwave and associated cold front were approaching from the west on the morning of July 1st. Ahead of the front, a very warm and moist air mass was in place over New England with values of precipitable water around 2 inches.

Read the full account →
Flash Flood$155K damage

Sullivan, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

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Flash Flood$150K damage

Sullivan, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

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Coastal Flood$1.3M damage

Coastal Rockingham, NH · Mar 3, 2018

Low pressure developed off the New Jersey coast (981mb), on March 2nd before rapidly intensifying well offshore on March 3rd (974mb), producing hurricane force wind gusts in the Gulf of Maine.

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Flash Flood$125K damage

Sullivan, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

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Flood$120K damage

Cheshire, NH · Jul 18, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

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Flash Flood$107K damage

Cheshire, NH · Jul 17, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

Read the full account →
Flash Flood$105K damage

Sullivan, NH · Aug 2, 2021

An upper level disturbance and developing area of low pressure allowed for scattered showers and thunderstorms to develop on the night of August 1st. These storms developed in a moisture rich atmosphere which allowed for heavy rainfall rates within the stronger storms.

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Flood$40K damage

Grafton, NH · Dec 23, 2022

Beginning on December 22nd a powerful storm was developing over the Ohio River Valley. On December 23rd the center of the storm was deepening rapidly (974mb) as it lifted through the eastern Great Lakes.

Read the full account →
Flash Flood$75K damage

Cheshire, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

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Flash Flood$1.0M damage

Grafton, NH · Jun 9, 2005

A stationary front was located through New Hampshire in an East-West orientation. Thunderstorms fired on the front during the evening hours and remained nearly stationary through Grafton county. Radar indicated 3 to 5+ inches of rain in 3 hours.

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Flood$25K damage

Merrimack, NH · Dec 23, 2022

Beginning on December 22nd a powerful storm was developing over the Ohio River Valley. On December 23rd the center of the storm was deepening rapidly (974mb) as it lifted through the eastern Great Lakes.

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Flash Flood$50K damage

Cheshire, NH · Jul 17, 2021

During the evening of July 17th an area of low pressure slowly moved east along a stationary boundary that stretched from New York to Massachusetts.

Read the full account →
Flash Flood

Carroll, NH · Apr 12, 2024

A cold front brought widespread soaking rainfall to the area. This rainfall combined with significant snowpack loss and saturated grounds to produce minor to moderate river flooding, with isolated flash flooding across the mountains.

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Coastal Flood$1.0M damage

Coastal Rockingham, NH · Jan 4, 2018

Low pressure developed off the Florida coast on the 3rd of January before moving north on the 4th. The intense low (956 mb) passed southeast of Nantucket Island during a period of very high astronomical tides. The forecast astronomical tide at Hampton was 10.5 feet.

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Coastal Flood$75K damage

Coastal Rockingham, NH · Feb 2, 2021

Low pressure rapidly intensified down to 988mb as it passed off the New England coast into the Gulf of Maine during the day on February 2nd. This produced storm force northeastly winds over the coastal waters that led to 25 foot nearshore waves.

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Flash Flood$40K damage

Belknap, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

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Flash Flood$1.0M damage

Grafton, NH · Jul 1, 2017

A very strong shortwave and associated cold front were approaching from the west on the morning of July 1st. Ahead of the front, a very warm and moist air mass was in place over New England with values of precipitable water around 2 inches.

Read the full account →
Flash Flood$35K damage

Merrimack, NH · Jul 29, 2021

A developing area of lower pressure crossed the state on the night of July 29th. Abundant moisture moved into the region ahead of this area of low pressure. Rain began by late afternoon on July 29th across the Connecticut River Valley.

Read the full account →
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