Alert archive / Iowa / Johnson County / 2018
Weather alerts in Johnson County, Iowa, August 2018
16 weather alerts in August 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 16
- Warnings
- 4
- Watches
- 2
- Advisories
- 4
- Busiest day
- August 28, 20188 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 |
|---|---|---|---|
| Aug 5, 5:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 7:37 PM CDT | Special Weather Statement | DVN | 38 min |
| Aug 7, 7:05 PM CDT | Special Weather Statement | DVN | 55 min |
| Aug 8, 4:07 AM CDT | Dense Fog Advisory | DVN | 5 hr |
| Aug 16, 3:00 AM CDT | Dense Fog Advisory | DVN | 6 hr |
| Aug 24, 11:24 PM CDT | Special Weather Statement | DVN | 36 min |
| Aug 25, 4:03 AM CDT | Dense Fog Advisory | DVN | 6 hr |
| Aug 26, 3:03 AM CDT | Heat Advisory | DVN | 64 hr |
| Aug 28, 9:08 AM CDT | Flash Flood Watch | DVN | 20 hr |
| Aug 28, 4:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 28, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 28, 5:14 PM CDT | Severe Thunderstorm Warning | DVN | 61 min |
| Aug 28, 5:59 PM CDT | Severe Thunderstorm Warning | DVN | 61 min |
| Aug 28, 6:02 PM CDT | Tornado Warning | DVN | 28 min |
| Aug 28, 6:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Aug 28, 6:37 PM CDT | Severe Thunderstorm Warning | DVN | 38 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 3 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 3 |
| Flooding | |
| Flash Flood Watch | 1 |
| Heat | |
| Heat Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.