Johnson County Emergency Management & Homeland Security maintains this webpage in an effort to educate the public on when and why the outdoor warning sirens have sounded. This information is only provided as an historic record and should not be relied upon for life-safety information. If the outdoor warning system is heard at anytime other than regularly scheduled test days, seek shelter and tune in to local radio, television, or your NOAA weather radio for instructions and information. For additional information, please see our outdoor warning system page.

DateReasonCommentsSiren Zones
9/7/2016 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, September 7, 2016 at 11:00am. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
8/3/2016 11:05:37 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, August 3, 2016 at 11:00am. ALL
6/1/2016 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, June 1st, 2016 at 11:00am. ALL
5/4/2016 11:06:43 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, April 04, 2016 at 11:00am. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
4/6/2016 10:56:20 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, 04/06/2016 at 11:00am. ALL
3/2/2016 11:07:36 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, March 2, 2016 at 11:00am. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
2/3/2016 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system will be conducted as scheduled today, Wednesday, February 3rd, 2016 at 11:00am. ALL
1/13/2016 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted today, Wednesday, January 13th at 11:00am. The monthly test was postponed from the first Wednesday of the month to the second Wednesday of the month due to inclement weather. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
12/2/2015 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, December 2, 2015 at 11:00am. ALL
11/4/2015 8:32:52 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, November 4th, 2015 at 11:00am. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
10/7/2015 9:34:14 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted as scheduled today, Wednesday, October 07, 2015 at 11:00am. ALL
9/9/2015 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted today, Wednesday, [September, 9th, 2015] at 11:00am. The monthly test was postponed from the first Wednesday of the month to the second Wednesday of the month due to the potential for thunderstorms on the first Wednesday. Zone 1 Zone 2 Zone 3 Zone 4 Zone 5
9/2/2015 11:00:00 AM Monthly Siren Test Due to the potential for thunderstorms today, the monthly first Wednesday test of the Johnson County outdoor warning system has been postponed until next Wednesday, [September, 9, 2015] at 11:00am.
8/12/2015 11:00:00 AM Monthly Siren Test The monthly test of the Johnson County outdoor warning system was conducted today, Wednesday, [August, 12, 2015] at 11:00am. The monthly test was postponed from the first Wednesday of the month to the second Wednesday of the month due to less than ideal weather. ALL
8/5/2015 9:40:26 AM Monthly Siren Test Due to inclement weather the monthly first Wednesday test of the Johnson County outdoor warning system has been postponed until next Wednesday, 08,12,2015 at 11:00am. ALL
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