Alert archive / Iowa / Johnson County / 2018
Weather alerts in Johnson County, Iowa, September 2018
25 weather alerts in September 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 25
- Warnings
- 10
- Watches
- 5
- Advisories
- 0
- Busiest day
- September 1, 20184 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 1, 3:44 AM CDT | Flash Flood Watch | DVN | 24 hr |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | 5 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | 5 days |
| Sep 1, 6:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Sep 1, 8:20 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 1, 10:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Sep 2, 9:26 AM CDT | Flash Flood Watch | DVN | 39 hr |
| Sep 2, 2:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 3, 9:19 AM CDT | River Flood Warning | DVN | 9 days |
| Sep 3, 1:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 3, 5:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Sep 4, 3:56 AM CDT | Flash Flood Watch | DVN | 39 hr |
| Sep 5, 12:36 PM CDT | Special Weather Statement | DVN | 69 min |
| Sep 5, 1:01 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Sep 5, 3:50 PM CDT | River Flood Warning | DVN | 4 days |
| Sep 5, 3:50 PM CDT | River Flood Warning | DVN | 5 days |
| Sep 18, 10:41 AM CDT | Special Weather Statement | DVN | 64 min |
| Sep 18, 11:47 AM CDT | Severe Thunderstorm Warning | DVN | 58 min |
| Sep 19, 10:38 AM CDT | River Flood Watch | DVN | 48 hr |
| Sep 19, 11:51 AM CDT | Special Weather Statement | DVN | 54 min |
| Sep 19, 2:21 PM CDT | Special Weather Statement | DVN | 54 min |
| Sep 21, 10:30 AM CDT | River Flood Warning | DVN | 8 days |
| Sep 25, 12:48 PM CDT | Severe Thunderstorm Warning | DVN | 42 min |
| Sep 25, 1:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 25, 1:28 PM CDT | Severe Thunderstorm Warning | DVN | 62 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.