Johnson County, Kansas weather alerts
No watches, warnings or advisories are in force for Johnson County.
Checked Sun, Sep 20, 2026, 3:22 PM CDT. Times are Central Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over Johnson County, Kansas. 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 Johnson 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 Johnson County
In the past year the National Weather Service issued 182 alerts for Johnson County, including 60 severe thunderstorm warnings, 10 flash flood warnings, 10 flood warnings and 6 extreme heat warnings.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 60 | Sep 15, 2026 |
| Flash Flood Warning | 10 | Sep 15, 2026 |
| Flood Warning | 10 | Jul 31, 2026 |
| Extreme Heat Warning | 6 | Sep 6, 2026 |
| Tornado Warning | 6 | Apr 27, 2026 |
| Red Flag Warning | 4 | Mar 28, 2026 |
| Freeze Warning | 2 | Mar 28, 2026 |
| Snow Squall Warning | 1 | Jan 16, 2026 |
| Winter Storm Warning | 1 | Jan 24, 2026 |
| Severe Thunderstorm Watch | 13 | Sep 6, 2026 |
| Flood Watch | 10 | Sep 15, 2026 |
| Tornado Watch | 8 | Jun 13, 2026 |
| Extreme Heat Watch | 2 | Jul 25, 2026 |
| Fire Weather Watch | 1 | Mar 28, 2026 |
| Freeze Watch | 1 | Nov 2, 2025 |
| Winter Storm Watch | 1 | Jan 23, 2026 |
| Flood Advisory | 15 | Sep 15, 2026 |
| Dense Fog Advisory | 11 | Sep 11, 2026 |
| Wind Advisory | 7 | Jun 17, 2026 |
| Heat Advisory | 6 | Aug 31, 2026 |
| Frost Advisory | 3 | Apr 5, 2026 |
| Cold Weather Advisory | 2 | Jan 26, 2026 |
| Winter Weather Advisory | 2 | Mar 15, 2026 |
Warnings issued
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Warning
- Flood Warning
- Flash Flood Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Warning
- Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Flood Warning
- Flood Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
And 40 earlier warnings.
Every alert, most recent first
- Flash Flood Warning
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Watch
- Dense Fog Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Extreme Heat Warning
- Extreme Heat Warning
- Heat Advisory
- Dense Fog Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Heat Advisory
- Extreme Heat Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Heat Advisory
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Flood Watch
- Flood Warning
- Flood Warning
- Flash Flood Warning
- Flood Advisory
- Extreme Heat Warning
- Extreme Heat Watch
- Heat Advisory
- Heat Advisory
- Flood Advisory
The 40 most recent of 182.
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 Johnson 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.