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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$500K damage

Grafton, NH · Aug 28, 2011

Tropical Storm Irene moved north through central and western New England bringing wind and very heavy rain to New Hampshire. This resulted in flash flooding on small rivers and streams in the mountains and flooding of small rivers and streams as well as main stem rivers farther…

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Flash Flood$500K damage

Carroll, NH · Aug 28, 2011

Tropical Storm Irene moved north through central and western New England bringing wind and very heavy rain to New Hampshire. This resulted in flash flooding on small rivers and streams in the mountains and flooding of small rivers and streams as well as main stem rivers farther…

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Coastal Flood

Coastal Rockingham, NH · Oct 29, 2015

An intensifying low pressure system passed well to the west of New England and into Canada during a period of extremely high astronomical tides.

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Storm Surge/Tide$150K damage

Coastal Rockingham, NH · May 25, 2005

A late season storm developed off the New England coast May 25th. High astronomical tides combined with strong northeast winds and large ocean waves to produce tidal flooding and beach erosion.

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Coastal Flood

Coastal Rockingham, NH · Sep 30, 2015

Low pressure tracked northeast along a stalled frontal boundary along the coast. Gale force southeasterly winds combined with the highest astronomical tides of the month to produce coastal flooding across the southwest coast of Maine.

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Flood$1.2M damage

Rockingham, NH · Mar 14, 2010

Low pressure developed over the Carolinas on March 13 and moved northeast spreading heavy rain over New England. Rainfall amounts ranged from 4 to 9 inches in southeast New Hampshire which caused serious flooding.

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Flash Flood$100K damage

Cheshire, NH · Jun 28, 2013

A warm front moved northward through Southern New England, resulting in moist southerly flow across much of the area. Showers and thunderstorms developed across western Massachusetts and southern New Hampshire, producing heavy rainfall towards the end of one of the wettest…

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Coastal Flood

Coastal Rockingham, NH · Oct 18, 2016

Low pressure rapidly intensified as it moved through the Great Lakes region on October 18th. This allowed southeasterly winds to develop over the North Atlantic region, leading to building, long period waves.

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Flood$125K damage

Coastal Rockingham, NH · Oct 8, 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$125K damage

Interior Rockingham, NH · Oct 8, 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$125K damage

Southern Carroll, NH · Oct 8, 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$125K damage

Northern Carroll, NH · Oct 8, 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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Flash Flood$345K damage

Carroll, NH · Aug 28, 2011

Tropical Storm Irene moved north through central and western New England bringing wind and very heavy rain to New Hampshire. This resulted in flash flooding on small rivers and streams in the mountains and flooding of small rivers and streams as well as main stem rivers farther…

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Flash Flood$55K damage

Coos, NH · May 30, 2011

A stationary front located through northern New Hampshire provided a focus for showers and thunderstorms to develop. Due to the slow movement and the training of the storms rainfall rates were high and resulted in flash flooding.

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Flood$112K damage

Northern Grafton, NH · Apr 3, 2005

A low pressure system moving slowly northeast from through the Mid-Atlantic States spread rain into New Hampshire during the afternoon of April 2. Heavy rain continued through the 3rd as the storm continued to move slowly northeast.

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Flood$112K damage

Southern Grafton, NH · Apr 3, 2005

A low pressure system moving slowly northeast from through the Mid-Atlantic States spread rain into New Hampshire during the afternoon of April 2. Heavy rain continued through the 3rd as the storm continued to move slowly northeast.

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Storm Surge/Tide$110K damage

Rockingham, NH · Mar 7, 2001

Low pressure developed off the New Jersey coast on March 5th, then moved slowly to the waters south of Cape Cod by the morning of the 6th. The system stalled off the southern New England coast on the afternoon of the 6th, and then drifted east of the Gulf of Maine on the 7th.

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Flash Flood$50K damage

Coos, NH · May 26, 2011

A stationary front located through northern New Hampshire provided a focus for showers and thunderstorms to develop. Due to the slow movement of the storms rainfall rates were high resulting in flash flooding.

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Flash Flood$50K damage

Coos, NH · May 30, 2011

A stationary front located through northern New Hampshire provided a focus for showers and thunderstorms to develop. Due to the slow movement and the training of the storms rainfall rates were high and resulted in flash flooding.

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Flash Flood$300K damage

Grafton, NH · Aug 28, 2011

Tropical Storm Irene moved north through central and western New England bringing wind and very heavy rain to New Hampshire. This resulted in flash flooding on small rivers and streams in the mountains and flooding of small rivers and streams as well as main stem rivers farther…

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Flash Flood

Hillsborough, NH · Jun 6, 2025

A stationary front stalled over southern New Hampshire on the evening of June 6 into midday on June 7th. Repeated rounds of heavy rain and thunderstorms brought up to 4 inches of rainfall to areas across Merrimack and Hillsborough Counties between 3 and 7 PM.

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Flash Flood

Merrimack, NH · Jun 6, 2025

A stationary front stalled over southern New Hampshire on the evening of June 6 into midday on June 7th. Repeated rounds of heavy rain and thunderstorms brought up to 4 inches of rainfall to areas across Merrimack and Hillsborough Counties between 3 and 7 PM.

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Flash Flood

Hillsborough, NH · Jun 7, 2025

A stationary front stalled over southern New Hampshire on the evening of June 6 into midday on June 7th. Repeated rounds of heavy rain and thunderstorms brought up to 4 inches of rainfall to areas across Merrimack and Hillsborough Counties between 3 and 7 PM.

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Flash Flood

Hillsborough, NH · Jun 6, 2025

A stationary front stalled over southern New Hampshire on the evening of June 6 into midday on June 7th. Repeated rounds of heavy rain and thunderstorms brought up to 4 inches of rainfall to areas across Merrimack and Hillsborough Counties between 3 and 7 PM.

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