New Hampshire, 2000

Flooding in New Hampshire, April 9 to 10, 2000

April 9 to 10, 2000 · NWS GYX · 3 events in 3 counties and zones

Low pressure developed over West Virginia on the 8th and moved northeast to central Massachusetts by Sunday morning. This pattern set up a strong southeast flow of moist air over New Hampshire.

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.

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  • Tropical storms and surge
  • Floods
  • Wind
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  • Marine and coastal
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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.

Low pressure developed over West Virginia on the 8th and moved northeast to central Massachusetts by Sunday morning. This pattern set up a strong southeast flow of moist air over New Hampshire. The heaviest rain fell from Grafton County eastward to the Maine state line, mainly during the morning and early afternoon of Sunday. Total rainfall amounts ranged between 2 and 3 inches, with Mount Washington receiving over 4 inches of rain. Runoff from the heavy rains caused flooding of the Pemigewasset, Baker, Saco, and Connecticut Rivers. The Pemigewasset was in flood from 8:45 am on the 9th until 9:30 am on the 10th reaching crests of 11.89 feet in Woodstock (9 foot flood stage) and 16.77 feet in Plymouth (13 foot flood stage). The Baker River in Rumney was in flood from 1:15 pm to 6:30 pm on the 9th, reaching a crest of 11.18 feet; flood stage is 10 feet. The Saco River in Conway was in flood from 2 pm on the 9th until 130 am on the 10th, reaching a crest of 16.09 feet at 6:45 pm on the 9th; flood stage is 15 feet. The Connecticut River at Wells was in flood from 2:45 pm on the 9th until 1:00 am on the 10th, reaching a crest of 12.42 feet at 7:30 pm on the 9th; flood stage is 11 feet.

The radar

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

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Event by event

3 flood. Local standard time, as filed.

Flood, Northern Grafton

When
April 9, 8:45 AM EST to April 10, 1:00 AM EST
Where
Northern Grafton forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
43.941, -71.820 (the zone’s center; the record gives no point)

Flood, Southern Grafton

When
April 9, 1:15 PM EST to 7:30 PM 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 9, 2:00 PM EST to April 10, 1:30 AM 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)

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 2026-09-24. Each event’s entry at NCEI: 5142946, 5142947, 5142945.