Alert archive / South Dakota / Union County / 2012
Weather alerts in Union County, South Dakota, May 2012
36 weather alerts in May 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 36
- Warnings
- 13
- Watches
- 10
- Advisories
- 1
- Busiest day
- May 27, 20127 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 |
|---|---|---|---|
| May 1, 2:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| May 1, 2:59 PM CDT | Tornado Watch | SPC | 6 hr |
| May 2, 3:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 2, 10:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 4, 1:50 PM CDT | Mesoscale Discussion | SPC | 25 min |
| May 4, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 4, 3:00 PM CDT | Severe Thunderstorm Warning | FSD | 30 min |
| May 4, 3:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 4, 9:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 5, 6:49 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 5, 2:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 5, 3:06 PM CDT | Flash Flood Watch | FSD | 13 hr |
| May 5, 3:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 5, 5:31 PM CDT | Tornado Watch | SPC | 5 hr |
| May 5, 10:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 6, 4:45 AM CDT | River Flood Warning | FSD | 7 days |
| May 6, 4:45 AM CDT | River Flood Warning | FSD | 7 days |
| May 21, 2:51 PM CDT | Wind Advisory | FSD | 29 hr |
| May 23, 3:50 AM CDT | Flash Flood Watch | FSD | 29 hr |
| May 23, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 23, 4:07 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 23, 8:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 24, 9:14 AM CDT | River Flood Warning | FSD | 24 hr |
| May 24, 9:14 AM CDT | River Flood Warning | FSD | 24 hr |
| May 27, 3:42 AM CDT | Flash Flood Watch | FSD | 24 hr |
| May 27, 2:58 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 27, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 27, 5:27 PM CDT | Severe Thunderstorm Warning | FSD | 33 min |
| May 27, 6:43 PM CDT | River Flood Warning | FSD | 5 days |
| May 27, 6:43 PM CDT | River Flood Warning | FSD | 6 days |
| May 27, 6:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 7:11 PM CDT | Severe Thunderstorm Warning | FSD | 34 min |
| May 27, 7:22 PM CDT | Flash Flood Warning | FSD | 7 hr |
| May 27, 9:18 PM CDT | Severe Thunderstorm Warning | FSD | 27 min |
| May 27, 9:32 PM CDT | Flash Flood Warning | FSD | 4 hr |
| May 27, 9:42 PM CDT | Severe Thunderstorm Warning | FSD | 10 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 | 5 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 12 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 6 |
| Flash Flood Watch | 3 |
| Wind and dust | |
| Wind Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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. Warning verification from the Mesonet's Cow. Rebuilt daily.