Onondaga County, New York weather alerts
No watches, warnings or advisories are in force for Onondaga County.
Checked Sun, Sep 20, 2026, 6:05 PM EDT. Times are Eastern Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over Onondaga County, New York. 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 Onondaga 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 Onondaga County
In the past year the National Weather Service issued 117 alerts for Onondaga County, including 27 severe thunderstorm warnings, 7 snow squall warnings, 6 flash flood warnings and 5 lake effect snow warnings.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 27 | Sep 13, 2026 |
| Snow Squall Warning | 7 | Jan 22, 2026 |
| Flash Flood Warning | 6 | Sep 2, 2026 |
| Lake Effect Snow Warning | 5 | Mar 17, 2026 |
| Winter Storm Warning | 3 | Jan 25, 2026 |
| Flood Warning | 2 | Apr 5, 2026 |
| Freeze Warning | 2 | May 3, 2026 |
| Tornado Warning | 2 | Sep 2, 2026 |
| Extreme Cold Warning | 1 | Feb 7, 2026 |
| Extreme Heat Warning | 1 | Jul 1, 2026 |
| High Wind Warning | 1 | Nov 5, 2025 |
| Severe Thunderstorm Watch | 9 | Aug 27, 2026 |
| Winter Storm Watch | 5 | Jan 25, 2026 |
| Flood Watch | 2 | Sep 2, 2026 |
| Tornado Watch | 2 | Sep 2, 2026 |
| Extreme Cold Watch | 1 | Feb 7, 2026 |
| Extreme Heat Watch | 1 | Jul 1, 2026 |
| Freeze Watch | 1 | Oct 9, 2025 |
| High Wind Watch | 1 | Nov 5, 2025 |
| Winter Weather Advisory | 16 | Mar 16, 2026 |
| Wind Advisory | 9 | Jun 18, 2026 |
| Frost Advisory | 6 | May 21, 2026 |
| Cold Weather Advisory | 3 | Feb 8, 2026 |
| Heat Advisory | 3 | Jul 14, 2026 |
| Dense Fog Advisory | 1 | Feb 17, 2026 |
Warnings issued
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flash Flood Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Freeze Warning
- Severe Thunderstorm Warning
- Flood Warning
- Flood Warning
- Flash Flood Warning
- Lake Effect Snow Warning
- Lake Effect Snow Warning
- Extreme Cold Warning
- Winter Storm Warning
- Snow Squall Warning
- Snow Squall Warning
- Snow Squall Warning
- Lake Effect Snow Warning
- Snow Squall Warning
- Snow Squall Warning
- Snow Squall Warning
- Winter Storm Warning
- Snow Squall Warning
- Winter Storm Warning
- Lake Effect Snow Warning
- Lake Effect Snow Warning
- High Wind Warning
- Freeze Warning
Every alert, most recent first
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Tornado Watch
- Flood Watch
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flash Flood Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Heat Advisory
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Watch
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Heat Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Watch
The 40 most recent of 117.
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 Onondaga 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.