Johnson County, IA — Severe Weather & Radar
One tap turns on push alerts for Tornado & Severe Thunderstorm Warnings that hit Johnson County, IA — even when the app is closed. No account needed.
Or get them by email
No app or notifications: an email when a warning is issued for your town.
No account or app. You'll confirm by email first, and every email has a stop link.
Active warnings
Severe-weather outlook
No severe-weather risk is outlooked for Johnson County, IA today.
3-day forecast
Forecast: NOAA National Blend of Models.
When is severe weather most likely near Johnson?
Around Johnson County and the Midwest, severe weather is most active from April through June.
The main threats are damaging thunderstorm winds — including widespread, long-lived derechos — along with large hail and tornadoes.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Johnson County, IA
Johnson County, IA has an estimated 150,000 residents, plus 2 hospitals, 7 nursing homes, 41 schools, 13 mobile-home parks, 2 dialysis centers that could be in a storm's path. Atmostorm shows which of them fall inside an active warning polygon.
Emergency-management view: who & what is in the warned path →
Nearby areas
Live radar and active alerts for places near Johnson:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.