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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

Merrimack, NH · May 31, 2025

Strong low pressure system brought widespread soaking rains to the region, with most areas total rainfall amounts generally 1-1.25, with locally higher amounts in southern and central New Hampshire.

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Flood

Merrimack, NH · May 31, 2025

Strong low pressure system brought widespread soaking rains to the region, with most areas total rainfall amounts generally 1-1.25, with locally higher amounts in southern and central New Hampshire.

Read the full account →
Flood

Merrimack, NH · May 31, 2025

Strong low pressure system brought widespread soaking rains to the region, with most areas total rainfall amounts generally 1-1.25, with locally higher amounts in southern and central New Hampshire.

Read the full account →
Coastal Flood$50K damage

Coastal Rockingham, NH · Apr 16, 2007

Overview: An area of low pressure intensified rapidly as it moved slowly from the southeastern United States on the morning of Sunday, April 15th to near New York City by the morning of Monday, April 16th.

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Coastal Flood$50K damage

Coastal Rockingham, NH · Apr 18, 2007

Overview: An area of low pressure intensified rapidly as it moved slowly from the southeastern United States on the morning of Sunday, April 15th to near New York City by the morning of Monday, April 16th.

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Flood$50K damage

Southern Carroll, NH · Apr 24, 2005

Low pressure developed in the Ohio River Valley and moved northeast through New York State. This low spread rain into New Hampshire during the morning hours of April 23rd. Rain was initially light but increased in intensity on April 24th as a cold front moved through.

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Flood$50K damage

Southern Grafton, NH · Apr 24, 2005

Low pressure developed in the Ohio River Valley and moved northeast through New York State. This low spread rain into New Hampshire during the morning hours of April 23rd. Rain was initially light but increased in intensity on April 24th as a cold front moved through.

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Flood$50K damage

Northern Grafton, NH · Apr 24, 2005

Low pressure developed in the Ohio River Valley and moved northeast through New York State. This low spread rain into New Hampshire during the morning hours of April 23rd. Rain was initially light but increased in intensity on April 24th as a cold front moved through.

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Flood$50K damage

Northern Carroll, NH · Apr 24, 2005

Low pressure developed in the Ohio River Valley and moved northeast through New York State. This low spread rain into New Hampshire during the morning hours of April 23rd. Rain was initially light but increased in intensity on April 24th as a cold front moved through.

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Flood$50K damage

Sullivan, NH · Oct 9, 2005

The interaction between a cold frontal boundary and the remnants of Tropical Storm Tammy resulted in tremendous amount of rainfall throughout most of central and southern New Hampshire.

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Flood$50K damage

Hillsborough, NH · Oct 15, 2005

A low pressure system interacted with a plume of tropical moisture as the low slowly moved parallel to the Long Island and south Massachusetts coasts, producing between 2.5 and 5.0 inches of rain across southwest New Hampshire.

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Flood$50K damage

Cheshire, NH · Oct 8, 2005

A slow-moving cold front interacted with the remnants of Tammy, producing significant rainfall and flooding across southern New Hampshire. Storm total rainfall ranged from between 9 and 11 inches across southwest New Hampshire; and the worst flooding occurred in the Ashuelot…

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Flood$50K damage

Hillsborough, NH · Oct 15, 2005

A low pressure system interacted with a plume of tropical moisture as the low slowly moved parallel to the Long Island and south Massachusetts coasts, producing between 2.5 and 5.0 inches of rain across southwest New Hampshire.

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Flood$50K damage

Hillsborough, NH · Mar 14, 2010

A stacked low pressure system (surface low and upper level low on top of each other) moved southeast of Nantucket, spreading rain across Southern New England. This resulted in widespread rainfall totals of three to six inches.

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Storm Surge/Tide$50K damage

Rockingham, NH · Jan 10, 1997

Low pressure moving northeastward from Georgia intensified off the coast of New England with storm force winds near the center and gale force winds extending to the Maine and New Hampshire coastlines.

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Coastal Flood$10K damage

Coastal Rockingham, NH · Jun 2, 2012

Low pressure crossed Cape Cod and entered the Gulf of Maine on June 2nd. An upper low approaching from the west intensified this system on June 3rd before slowly exiting the Gulf of Maine on the 4th through the 5th.

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Coastal Flood$10K damage

Coastal Rockingham, NH · Dec 27, 2012

Low pressure intensified as it slowly moved up the east coast on the 26th of December and into the Gulf of Maine on the 27th. The slow movement allowed for a two to three foot storm surge on top of the normal astronomical tides.

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Coastal Flood

Coastal Rockingham, NH · Mar 10, 2024

High pressure in control on the 9th began to slide northeast through the day as primary low pressure moved through the Great Lakes into southern Canada. A secondary area of low pressure developed over inland areas of the Carolinas.

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Flash Flood

Grafton, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

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Flash Flood

Grafton, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

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Flash Flood

Coos, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

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Flash Flood

Coos, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

Read the full account →
Flash Flood

Coos, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

Read the full account →
Flash Flood

Grafton, NH · Jul 10, 2024

On July 10th the remnants of Tropical Storm Beryl phased with a low pressure system out of the Great Lakes to bring multiple rounds of heavy rainfall to northern New England, including Maine and New Hampshire.

Read the full account →
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