New Hampshire, 2022

Flooding in New Hampshire, February 18 to 23, 2022

February 18 to 23, 2022 · NWS GYX · 2 events in 1 county or zone

On February 17 and 18th a strong low pressure system tracked through southern Canada and ushered in an unseasonably warm and moist airmass. Temperatures surged into the 50s to low 60s.

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.

On February 17 and 18th a strong low pressure system tracked through southern Canada and ushered in an unseasonably warm and moist airmass. Temperatures surged into the 50s to low 60s. Steady rainfall accompanied by embedded heavier showers with the cold frontal passage produced about 0.75 inches of precipitation. Wind, high humidity, and rain resulted in significant snowmelt where snow was ripe. Runoff was sufficient to raise area rivers, though most remained in their banks. River rises resulted in ice breakup and minor ice jam flooding on some rivers across central New Hampshire, which continued for several days. The largest impacts were reported in the Claremont region.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before the first event at Feb 18, 3:55 PM EST, 1 hour 5 minutes earlier.

Area forecast discussion, Feb 18, 3:55 PM EST, 1 hour 5 minutes before
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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, Sullivan

When
February 18, 5:00 PM EST to February 19, 2:00 AM EST
Where
Sullivan County, 0.74 mi N of Claremont to 0.87 mi ESE of Puckershire
Cause
Ice Jam
Reported by
Fire Department/Rescue
Coordinates
43.391, -72.349

USGS River Gage on the Sugar River at Claremont indicated rapid river level rises from an ice jam on the afternoon of the 18th. Claremont Fire Department confirmed an ice jam which resulted in water backing into backyards of residences on Beauregard Street and Twistback Road. Nuisance flooding occurred near the Home Depot in Newport on Washington St.

Flood, Sullivan

When
February 23, 2:00 AM EST to 6:00 AM EST
Where
Sullivan County, Claremont to 0.74 mi N of Claremont
Cause
Ice Jam
Reported by
Fire Department/Rescue
Coordinates
43.380, -72.350

Ice movement caused minor flooding along the Sugar River at Claremont. Flooding was nuisance along Twistback Road.

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 2022Every state in 2022This day in weather historyWarnings in New Hampshire, February 2022

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: 1010212, 1010213.