New Hampshire, 2000

Flooding in New Hampshire, April 4 to 6, 2000

April 4 to 6, 2000 · NWS GYX · 3 events in 3 counties and zones

A weak cold front slid south of New Hampshire on the morning of the 3rd and became stationary over southern New England. Passage of the front produced 1/4 to 1/3 of an inch of precipitation.

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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.

A weak cold front slid south of New Hampshire on the morning of the 3rd and became stationary over southern New England. Passage of the front produced 1/4 to 1/3 of an inch of precipitation. Low pressure then developed along this front in the midwest, moved northeast, and was located north of Syracuse, New York by 8 am on the 4th. The low produced up to an additional 1.5 inches of precipitation in east-central New Hampshire. This low then moved slowly up the St. Lawrence River on the 4th and produced another 1/3 to 1/2 inch of rain in central New Hampshire. Runoff from these rains caused minor flooding of the Connecticut and Saco Rivers. The Saco River flooded briefly in Conway reaching a crest of 9.04 feet at 5:30 pm on the 4th; flood stage is 9 feet. The Connecticut River at West Lebanon reached a crest of 18.46 feet at 12:05 am on the 5th; flood stage is 18 feet. The Connecticut River in Dalton reached a crest of 17.04 feet at 6:45 am on the 6th; flood stage is 17 feet.

The radar

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

Open the radar archive at this moment

Event by event

3 flood. Local standard time, as filed.

Flood, Southern Grafton

When
April 4, 1:30 PM EST to April 5, 5:30 AM EST
Where
Southern Grafton forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
43.941, -71.820 (the zone’s center; the record gives no point)

Flood, Northern Carroll

When
April 4, 3:30 PM EST to 5:45 PM EST
Where
Northern Carroll forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
43.874, -71.203 (the zone’s center; the record gives no point)

Flood, Southern Coos

When
April 6, 12:15 AM EST to 1:15 PM EST
Where
Southern Coos forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
44.690, -71.305 (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

More

Every storm in New Hampshire in 2000Every state in 2000This day in weather historyWarnings in New Hampshire, April 2000

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 2026-09-30. Each event’s entry at NCEI: 5142944, 5142849, 5142943.