New Hampshire, 2023

Flooding in New Hampshire, July 2 to 4, 2023

July 2 to 4, 2023 · NWS GYX · 2 events in 2 counties and zones

The first of many rounds of rain moved into the state by daybreak on July 2nd. Periods of moderate to heavy rain continued through most of the day before ending by evening.

Where it happened

Every event with a place to put it. 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

The first of many rounds of rain moved into the state by daybreak on July 2nd. Periods of moderate to heavy rain continued through most of the day before ending by evening. Most areas of the state received 1 to 2 of rain, with the heaviest rain corridor occurring across the Seacoast region of Rockingham and Strafford Counties where 2 to 3 of rainfall occurred.

The radar

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

Open the radar archive at this moment

Event by event

2 flood. Local standard time, as filed.

Flood, Rockingham

When
July 2, 3:30 PM EST to 4:00 PM EST
Where
Rockingham County, 1.17 mi S of Windham to 1.08 mi S of Windham
Cause
Heavy Rain
Reported by
Local Official
Coordinates
42.783, -71.300

Heavy rainfall estimated around 2 inches caused Cobbetts Pond Road to suffer a shoulder washout. Flooding was partially caused by an undersized culvert.

Flood, Merrimack

When
July 3, 6:45 PM EST to July 4, 12:00 PM EST
Where
Merrimack County, 1 mi ENE of North Chichester to 0.53 mi ESE of North Chichester
Cause
Heavy Rain
Reported by
Other Federal Agency
Coordinates
43.258, -71.363

The Suncook River came out of banks following heavy rain on the 2nd. The water came up to Bachelder Road in Allenstown. Waterfront campsites upstream were inundated. The river crested at 7.5 feet, flood stage is 7.0 feet.

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

More

Every storm in New Hampshire in 2023Every state in 2023This day in weather historyWarnings in New Hampshire, July 2023

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: 1123589, 1124082.