Sullivan County, New Hampshire weather alerts
No watches, warnings or advisories are in force for Sullivan County.
Checked Sun, Sep 20, 2026, 12:29 PM EDT. Times are Eastern Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over Sullivan County, New Hampshire. Open it for the live map, where it pans and zooms.
Open the live map with warnings and watches
Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.
Alerts in force
Nothing is in force for Sullivan County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.
The past year in Sullivan County
In the past year the National Weather Service issued 52 alerts for Sullivan County, including 7 severe thunderstorm warnings, 4 winter storm warnings, 2 freeze warnings and 1 extreme cold warning.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 7 | Jul 15, 2026 |
| Winter Storm Warning | 4 | Feb 20, 2026 |
| Freeze Warning | 2 | May 12, 2026 |
| Extreme Cold Warning | 1 | Feb 7, 2026 |
| Extreme Heat Warning | 1 | Jul 1, 2026 |
| Flood Watch | 2 | Jul 29, 2026 |
| Severe Thunderstorm Watch | 2 | Jul 15, 2026 |
| Winter Storm Watch | 2 | Jan 25, 2026 |
| Extreme Cold Watch | 1 | Feb 7, 2026 |
| Extreme Heat Watch | 1 | Jul 1, 2026 |
| Freeze Watch | 1 | Oct 9, 2025 |
| Tornado Watch | 1 | Jun 18, 2026 |
| Winter Weather Advisory | 11 | Mar 21, 2026 |
| Cold Weather Advisory | 4 | Feb 8, 2026 |
| Frost Advisory | 4 | May 21, 2026 |
| Wind Advisory | 4 | Mar 16, 2026 |
| Heat Advisory | 3 | Jul 14, 2026 |
| Flood Advisory | 1 | Jun 12, 2026 |
Warnings issued
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Freeze Warning
- Severe Thunderstorm Warning
- Winter Storm Warning
- Extreme Cold Warning
- Winter Storm Warning
- Winter Storm Warning
- Winter Storm Warning
- Freeze Warning
Every alert, most recent first
- Flood Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Heat Advisory
- Extreme Heat Watch
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Watch
- Heat Advisory
- Flood Advisory
- Heat Advisory
- Frost Advisory
- Freeze Warning
- Severe Thunderstorm Warning
- Winter Weather Advisory
- Wind Advisory
- Flood Watch
- Winter Weather Advisory
- Winter Weather Advisory
- Winter Weather Advisory
- Winter Storm Warning
- Winter Weather Advisory
- Cold Weather Advisory
- Extreme Cold Warning
- Extreme Cold Watch
- Cold Weather Advisory
- Cold Weather Advisory
- Winter Storm Warning
- Winter Storm Watch
- Cold Weather Advisory
- Winter Weather Advisory
- Winter Weather Advisory
- Winter Weather Advisory
- Wind Advisory
- Winter Storm Warning
The 40 most recent of 52.
From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.
Nearby
The counties around Sullivan County, with what is in force in each.
What this means
- Warning
- The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
- Watch
- Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
- Advisory
- A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
- Statement
- Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.
Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.
Sources
Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.