Tornado History Map

Hillsborough County, New Hampshire tornado history

22 tornadoes recorded in or across Hillsborough County from 1956 to 1998, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Hillsborough County

The Storm Prediction Center records 22 tornadoes whose paths touched Hillsborough County, New Hampshire between 1956 and 1998. None of them is recorded as having killed anyone. The busiest month is July, with 10 tornadoes. The strongest was an F3 on 20 May 1963. The most recent was on 31 May 1998.

  • 22tornadoes
  • 0deaths
  • 1injury
  • 251per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Hillsborough County?

RatingTornadoesShare
F0 / EF015%
F1 / EF11359%
F2 / EF2627%
F3 / EF329%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Hillsborough County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 13 in 1960s.1950s11960s131970s31980s31990s2

The 1990s only run to 1998, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s1
1960s13
1970s3
1980s3
1990s2
Tornadoes by month
Bar chart of tornadoes by period. The most is 10 in Jul.Jan0Feb0Mar0Apr0May4Jun4Jul10Aug4Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May4
Jun4
Jul10
Aug4
Sep0
Oct0
Nov0
Dec0

Records for Hillsborough County

  • Strongest and Longest path: New Hampshire tornado20 May 1963, F3, 14 miles long
  • Most recent: New Hampshire tornado31 May 1998, F2, 0.5 miles long

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

More in New Hampshire

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