Flooding in New Hampshire, April 24 to 25, 2005

Name: Flooding in New Hampshire, April 24 to 25, 2005
Start: 2005-04-24T09:30
End: 2005-04-25T06:15
Location: New Hampshire

April 24 to 25, 2005 · NWS GYX · 6 events in 6 counties and zones

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.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $225,000
Crop damage: None recorded
Events: 6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GYX wrote it up.

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. Rainfall amounts generally ranged from 1.5 to 2.5 inches across the area. There were several road washouts and flooded basements during this event.The Saco River at Conway rose above the flood stage of 9 feet at 1:30 pm on the 24th and remained above flood stage until 5:45 am on the 25th, reaching a crest of 12.14 feet at 9:30 pm on the 24th.The Pemigewasset River at Woodstock was above the flood stage of 9 feet from 10:30 am to 9:45 pm on the 24th, reaching a crest of 11.58 feet at 2:30 pm. The Pemigewasset River at Plymouth rose above the flood stage of 13 feet at 3:15 pm on the 24th and remained above flood stage until 7:15 am on the 25th, reaching a crest of 15.51 feet at 11:00 pm on the 24th.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

6 flood. Local standard time, as filed.

Flood, Northern Grafton

When: April 24, 9:30 AM EST to April 25, 6:15 AM EST
Where: Northern Grafton forecast zone
Property damage: $50,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 43.883, -71.267

Flood, Southern Grafton

When: April 24, 9:30 AM EST to April 25, 6:15 AM EST
Where: Southern Grafton forecast zone
Property damage: $50,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 43.950, -72.233

Flood, Northern Coos

When: April 24, 10:00 AM EST to April 25, 3:00 AM EST
Where: Northern Coos forecast zone
Property damage: $13,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 43.517, -71.450

Flood, Southern Coos

When: April 24, 10:00 AM EST to April 25, 3:00 AM EST
Where: Southern Coos forecast zone
Property damage: $13,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 44.690, -71.305 (the zone’s center; the record gives no point)

Flood, Northern Carroll

When: April 24, 12:30 PM EST to April 25, 4:45 AM EST
Where: Northern Carroll forecast zone
Property damage: $50,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 43.874, -71.203 (the zone’s center; the record gives no point)

Flood, Southern Carroll

When: April 24, 12:30 PM EST to April 25, 4:45 AM EST
Where: Southern Carroll forecast zone
Property damage: $50,000
Reported by: OFFICIAL NWS OBS.
Coordinates: 43.874, -71.203 (the zone’s center; the record gives no point)

What these are

Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in New Hampshire in 2005 Every state in 2005 This day in weather history Warnings in New Hampshire, April 2005

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 5451423, 5451480, 5451422, 5451425, 5451421, 5451424.