New Hampshire, 2006

Flooding in New Hampshire, May 13 to 16, 2006

May 13 to 16, 2006 · NWS GYX · 6 events in 6 counties and zones

Low pressure developed south of New England and remained nearly stationary from the 12th to the 15th resulting in over 12 inches of rain in some locations in a 72 hour period. Homes and businesses were damaged extensively.

Where it happened

Every event with a place to put it; 6 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
$6.0 million
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 south of New England and remained nearly stationary from the 12th to the 15th resulting in over 12 inches of rain in some locations in a 72 hour period. Homes and businesses were damaged extensively. Many roads were washed out and impassable. Some bridges were damaged or destroyed. Several evacuations and rescues took place during the flood event. Two dams on the Salmon Falls River were being monitored as it was feared they may fail.

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 May 13, 9:11 AM EST, 4 hours 49 minutes earlier.

Area forecast discussion, May 13, 9:11 AM EST, 4 hours 49 minutes before
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Hazardous weather outlook, May 13, 10:00 AM EST, 4 hours 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

6 flood. Local standard time, as filed.

Flood, Rockingham

When
May 13, 2:00 PM EST to May 16, 9:45 PM EST
Where
Rockingham County, Countywide
Property damage
$4.0 million
Reported by
OFFICIAL NWS OBS.
Coordinates
42.985, -71.089 (the zone’s center; the record gives no point)

Flood, Belknap

When
May 13, 4:45 PM EST to May 16, 9:45 PM EST
Where
Belknap County, Countywide
Property damage
$60,000
Reported by
OFFICIAL NWS OBS.
Coordinates
43.519, -71.423 (the zone’s center; the record gives no point)

Flood, Merrimack

When
May 13, 4:45 PM EST to May 16, 9:45 PM EST
Where
Merrimack County, Countywide
Property damage
$750,000
Reported by
OFFICIAL NWS OBS.
Coordinates
43.298, -71.680 (the zone’s center; the record gives no point)

Flood, Strafford

When
May 13, 5:00 PM EST to May 16, 9:45 PM EST
Where
Strafford County, Countywide
Property damage
$1.1 million
Reported by
OFFICIAL NWS OBS.
Coordinates
43.297, -71.029 (the zone’s center; the record gives no point)

Flood, Carroll

When
May 13, 7:00 PM EST to May 16, 9:45 PM EST
Where
Carroll County, Countywide
Property damage
$60,000
Reported by
OFFICIAL NWS OBS.
Coordinates
43.874, -71.203 (the zone’s center; the record gives no point)

Flood, Grafton

When
May 14, 1:00 AM EST to May 16, 7:00 AM EST
Where
Grafton County, Countywide
Property damage
$25,000
Reported by
OFFICIAL NWS OBS.
Coordinates
43.941, -71.820 (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 2006Every state in 2006This day in weather historyWarnings in New Hampshire, May 2006

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: 5510723, 5510719, 5510722, 5510724, 5510720, 5510721.