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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.

Flood

Carroll, NH · Dec 1, 2020

An area of low pressure tracked to the west of the region on the evening of Nov 30th with a broad area of moderate to heavy rain and pockets of embedded convection enveloping the region.

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Flood$10K damage

Merrimack, NH · Sep 6, 2008

The remains of tropical storm Hanna moved through eastern New England dumping 3 to 6 inches of rain in New Hampshire in about 8 hours causing rapid rises on area streams. Road washouts were the major problem.

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Storm Surge/Tide

Rockingham, NH · Mar 6, 1997

Northeasterly winds combined with an astronomically high tide to cause minor flooding throughout coastal sections of Rockingham County. In Portland, Maine, the tide reached 12.6 feet which was 0.6 feet above the flood stage.

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Coastal Flood

Coastal Rockingham, NH · Oct 28, 2019

A developing coastal low moved up the Northeast coast from Long Island, New York across Cape Cod, Massachusetts and into the Gulf of Maine on October 28th.

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Flood

Cheshire, NH · Mar 8, 2008

A powerful low pressure system tracked through eastern New York spreading heavy rain and strong winds across Southern New England. Heavy rain coinciding with spring snowmelt contributed to river flooding, especially along the Connecticut River.

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Flood

Grafton, NH · Dec 25, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

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Flood

Grafton, NH · Dec 25, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

Read the full account →
Flood

Merrimack, NH · Dec 25, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

Read the full account →
Flood

Merrimack, NH · Dec 26, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

Read the full account →
Flood

Carroll, NH · Dec 25, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

Read the full account →
Flood

Grafton, NH · Dec 25, 2020

On Christmas Day a strong low pressure system tracked up the spine of the Appalachians and to the west of New Hampshire, resulting in 1 to 2 of rain across the region will locally up to 4 in the favorable upslope areas of the White Mountains.

Read the full account →
Flood

Hillsborough, NH · Jul 14, 1997

A series of quick, heavy showers flooded streets, some cellars, and some basement floors in the city of Nashua's downtown area just before 6 PM. Storm drains and sewers just could not handle all of the runoff.

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Storm Surge/Tide

Coastal Rockingham, NH · Jan 31, 2006

Low pressure moved slowly up the mid Atlantic coast late in the day on the 30th and strengthened as it moved into the Gulf of Maine on the 31st. The storm continued to intensify before moving out to sea on February 1st.

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Flood

Coos, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

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Flood

Grafton, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

Read the full account →
Flood

Grafton, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

Read the full account →
Flood

Coos, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

Read the full account →
Flood

Grafton, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

Read the full account →
Flood

Carroll, NH · Apr 20, 2019

Melting snow combined with an inch of rainfall causing already swollen rivers in New Hampshire to rise above flood stage. Moderate flooding occurred along the Connecticut River at Dalton.

Read the full account →
Flood

Strafford, NH · Feb 25, 2010

Strong coastal low pressure produced rainfall of 5 to 8 inches resulting in county wide flooding of small rivers and streams across numerous counties in New Hampshire. Road washouts were widespread with major damage occurring to roadways. Homes and businesses were also flooded.

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Coastal Flood

Coastal Rockingham, NH · Mar 4, 2010

Low pressure deepened to 993 mb off the New England coastline during a period of high astronomical tides. This produced gale force winds along the New Hampshire seacoast.

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Flash Flood

Cheshire, NH · Jul 8, 2020

An upper level disturbance moving in from the northwest coupled with a very moist air mass over New Hampshire where dewpoint temperatures rose to around 70 degrees. This allowed for strong instability with strong thunderstorm development.

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Flash Flood

Cheshire, NH · Jul 8, 2020

An upper level disturbance moving in from the northwest coupled with a very moist air mass over New Hampshire where dewpoint temperatures rose to around 70 degrees.

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Coastal Flood

Coastal Rockingham, NH · May 7, 2020

An approaching surface cold front the evening of May 7th allowed for strong southeasterly onshore flow across coastal New Hampshire. This weak onshore flow along with 3 to 4 ft waves coincided with a high astronomical tide to create minor coastal flooding in the Hampton Beach…

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