Hillsborough County weather alerts
There are no active weather alerts for Hillsborough County, NH right now.
Since 2016 the National Weather Service has issued about 942 alerts that included Hillsborough County, roughly 94 a year. The most common is the severe thunderstorm warning (147 from 2016 to 2025). The last tornado warning was issued on June 23, 2024. 20 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Hillsborough County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Essex County, Worcester County, Sullivan County, Rockingham County.
Hillsborough County alert history
Alert events that included Hillsborough County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 147 | 14 | July 28, 2026 |
| Winter Weather Advisory | 119 | 10 | March 7, 2026 |
| Flood Advisory | 83 | 2 | August 7, 2026 |
| Wind Advisory | 72 | 2 | May 30, 2026 |
| Flood Watch | 61 | 2 | July 29, 2026 |
| Heat Advisory | 60 | 8 | August 7, 2026 |
| Winter Storm Watch | 53 | 2 | February 23, 2026 |
| Dense Fog Advisory | 51 | 1 | June 28, 2026 |
| Severe Thunderstorm Watch | 51 | 2 | July 15, 2026 |
| Winter Storm Warning | 44 | 3 | February 23, 2026 |
| Flash Flood Warning | 42 | 1 | August 3, 2026 |
| Flood Warning | 41 | 0 | May 31, 2025 |
| Frost Advisory | 17 | 3 | October 11, 2026 |
| Snow Squall Warning | 14 | 0 | December 4, 2025 |
| Red Flag Warning | 13 | 0 | April 27, 2021 |
| Fire Weather Watch | 11 | 0 | April 27, 2021 |
| Tornado Warning | 10 | 0 | June 23, 2024 |
| Cold Weather Advisory | 8 | 5 | February 9, 2026 |
| High Wind Watch | 7 | 0 | November 6, 2025 |
| Freeze Warning | 7 | 0 | October 10, 2025 |
| High Wind Warning | 5 | 0 | February 17, 2025 |
| Extreme Heat Warning | 5 | 1 | July 1, 2026 |
| Extreme Cold Watch | 4 | 0 | February 3, 2023 |
| Extreme Heat Watch | 4 | 1 | July 1, 2026 |
| Tornado Watch | 4 | 1 | June 18, 2026 |
| Extreme Cold Warning | 3 | 1 | February 7, 2026 |
| Blizzard Warning | 2 | 1 | February 23, 2026 |
| Freeze Watch | 2 | 0 | October 10, 2025 |
| Tropical Storm Watch | 1 | 0 | August 3, 2020 |
| Tropical Storm Warning | 1 | 0 | August 3, 2020 |
Tornado history in Hillsborough County
20 tornadoes have been recorded in Hillsborough County since 1950, injuring 1 people. That ranks 1 of 10 counties in New Hampshire. The most recent was on May 31, 1998 (rated F2).
Strongest tornadoes in Hillsborough County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 20, 1963 | F3 | Cheshire County | 14 mi | 100 yd | 0 | 0 |
| August 20, 1968 | F3 | Hillsborough County | 1 mi | 27 yd | 0 | 1 |
| June 9, 1963 | F2 | Hillsborough County | 10 mi | 77 yd | 0 | 0 |
| July 2, 1961 | F2 | Hillsborough County | 2 mi | 17 yd | 0 | 0 |
| July 3, 1997 | F2 | Hillsborough County | 2 mi | 250 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 31, 1998 | F2 | Hillsborough County | 0.5 mi | 90 yd | 0 | 0 |
| July 3, 1997 | F2 | Hillsborough County | 2 mi | 250 yd | 0 | 0 |
| June 16, 1986 | F1 | Cheshire County | 12 mi | 30 yd | 0 | 0 |
| July 5, 1984 | F1 | Cheshire County | 7 mi | 20 yd | 0 | 0 |
| July 5, 1984 | F1 | Hillsborough County | 0.1 mi | 10 yd | 0 | 0 |
About Hillsborough County
- Population: 430,462 (2024 estimate)
- State: New Hampshire
- NOAA Weather Radio SAME code: 033011 (how to use it)
- Cities: Manchester