Alert archive / South Dakota / Todd County
Weather alerts in Todd County, South Dakota, 2012
106 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Todd County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 106
- Warnings
- 23
- Watches
- 11
- Advisories
- 34
- Busiest month
- June23 alerts
- Busiest day
- June 20, 20126 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Todd County in 2012 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Todd County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| Severe thunderstorm warnings | 19 | 14 | 26% | 19 | 84% | 14 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Rapid City, SD: tornado warnings | 5 | 1 | 80% | 4 | 50% | 15 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 259 | 192 | 26% | 349 | 86% | 23 min |
| NWS Rapid City, SD: flash flood warnings | 5 | 0 | 100% | 0 |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 |
|---|---|---|---|
| Jan 10, 3:55 AM CST | Wind Advisory | UNR | 39 hr |
| Jan 21, 4:03 AM CST | Winter Weather Advisory | UNR | 38 hr |
| Jan 21, 11:01 AM CST | Wind Advisory | UNR | 5 hr |
| Jan 21, 3:44 PM CST | Wind Advisory | UNR | 13 hr |
| Jan 26, 4:03 PM CST | Wind Advisory | UNR | 23 hr |
| Feb 7, 4:13 AM CST | Freezing Rain Advisory | UNR | 8 hr |
| Feb 19, 3:31 PM CST | Winter Weather Advisory | UNR | 24 hr |
| Feb 21, 3:33 PM CST | Wind Advisory | UNR | 51 hr |
| Feb 24, 4:36 PM CST | Wind Advisory | UNR | 47 hr |
| Feb 25, 11:06 AM CST | Wind Advisory | UNR | 8 hr |
| Feb 25, 3:54 PM CST | Winter Storm Watch | UNR | 47 hr |
| Feb 27, 2:54 PM CST | Winter Weather Advisory | UNR | 45 hr |
| Mar 2, 4:40 AM CST | Wind Advisory | UNR | 13 hr |
| Mar 3, 3:17 PM CST | Wind Advisory | UNR | 24 hr |
| Mar 17, 3:56 PM CDT | Wind Advisory | UNR | 30 hr |
| Mar 18, 10:11 PM CDT | Severe Thunderstorm Warning | UNR | 48 min |
| Mar 18, 10:20 PM CDT | Tornado Warning | UNR | 25 min |
| Mar 26, 5:00 AM CDT | High Wind Warning | UNR | 34 hr |
| Mar 26, 6:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 26, 9:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 1, 5:22 AM CDT | Wind Advisory | UNR | 38 hr |
| Apr 5, 3:57 PM CDT | Wind Advisory | UNR | 50 hr |
| Apr 14, 4:09 PM CDT | Wind Advisory | UNR | 30 hr |
| May 4, 5:32 AM CDT | Severe Thunderstorm Warning | UNR | 58 min |
| May 4, 6:28 AM CDT | Severe Thunderstorm Warning | UNR | 62 min |
| May 4, 6:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| May 5, 3:19 AM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 10, 3:15 AM CDT | Wind Advisory | UNR | 20 hr |
| May 19, 12:51 AM CDT | Mesoscale Discussion | SPC | 84 min |
| May 21, 3:48 PM CDT | Wind Advisory | UNR | 28 hr |
| May 21, 7:08 PM CDT | Severe Thunderstorm Warning | UNR | 53 min |
| May 21, 7:50 PM CDT | Severe Thunderstorm Warning | UNR | 40 min |
| May 22, 2:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 22, 7:08 PM CDT | Severe Thunderstorm Warning | UNR | 44 min |
| May 22, 7:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 26, 1:58 AM CDT | Mesoscale Discussion | SPC | 92 min |
| May 26, 9:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 1, 3:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 9, 10:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 9, 10:23 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 15, 4:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 15, 5:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 15, 9:10 PM CDT | Special Weather Statement | UNR | 50 min |
| Jun 19, 8:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 19, 10:30 PM CDT | Special Weather Statement | UNR | 45 min |
| Jun 19, 10:48 PM CDT | Severe Thunderstorm Warning | UNR | 31 min |
| Jun 19, 11:02 PM CDT | Severe Thunderstorm Warning | UNR | 17 min |
| Jun 20, 12:57 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 20, 1:18 AM CDT | Severe Thunderstorm Warning | UNR | 57 min |
| Jun 22, 6:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 22, 6:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 9:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 22, 10:52 PM CDT | Severe Thunderstorm Warning | UNR | 53 min |
| Jun 22, 11:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 23, 1:18 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 23, 1:30 AM CDT | Special Weather Statement | UNR | 30 min |
| Jun 25, 4:05 PM CDT | Heat Advisory | UNR | 28 hr |
| Jun 25, 8:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 29, 2:16 AM CDT | Special Weather Statement | UNR | 44 min |
| Jun 30, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 1, 3:37 PM CDT | Heat Advisory | UNR | 3 days |
| Jul 14, 3:43 PM CDT | Heat Advisory | UNR | 52 hr |
| Jul 18, 3:54 PM CDT | Heat Advisory | UNR | 54 hr |
| Jul 19, 5:19 PM CDT | Special Weather Statement | UNR | 56 min |
| Jul 19, 5:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 19, 6:15 PM CDT | Special Weather Statement | UNR | 45 min |
| Jul 19, 6:20 PM CDT | Severe Thunderstorm Warning | UNR | 55 min |
| Jul 19, 6:58 PM CDT | Severe Thunderstorm Warning | UNR | 92 min |
| Jul 20, 4:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 20, 5:29 PM CDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jul 20, 10:01 PM CDT | Heat Advisory | UNR | 22 hr |
| Jul 21, 10:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 21, 11:02 PM CDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jul 22, 7:37 PM CDT | Special Weather Statement | UNR | 68 min |
| Jul 22, 8:17 PM CDT | Severe Thunderstorm Warning | UNR | 47 min |
| Jul 22, 10:58 PM CDT | Mesoscale Discussion | SPC | 107 min |
| Jul 25, 5:31 PM CDT | Special Weather Statement | UNR | 59 min |
| Jul 25, 6:21 PM CDT | Special Weather Statement | UNR | 54 min |
| Jul 27, 7:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 27, 10:59 PM CDT | Special Weather Statement | UNR | 31 min |
| Jul 27, 11:12 PM CDT | Severe Thunderstorm Warning | UNR | 50 min |
| Aug 1, 2:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Aug 1, 3:19 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 1, 5:10 PM CDT | Special Weather Statement | UNR | 35 min |
| Aug 2, 11:41 PM CDT | Severe Thunderstorm Warning | UNR | 64 min |
| Aug 3, 12:23 AM CDT | Severe Thunderstorm Warning | UNR | 97 min |
| Aug 11, 9:30 PM CDT | Special Weather Statement | UNR | 60 min |
| Aug 14, 4:01 PM CDT | Wind Advisory | UNR | 29 hr |
| Aug 22, 3:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 22, 5:44 PM CDT | Special Weather Statement | UNR | 46 min |
| Aug 22, 6:07 PM CDT | Severe Thunderstorm Warning | UNR | 37 min |
| Aug 27, 3:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 22, 3:11 AM CDT | Frost Advisory | UNR | 25 hr |
| Oct 2, 3:56 PM CDT | Wind Advisory | UNR | 33 hr |
| Oct 3, 3:03 PM CDT | Hard Freeze Warning | UNR | 41 hr |
| Oct 15, 4:04 AM CDT | High Wind Watch | UNR | 49 hr |
| Oct 16, 3:39 PM CDT | High Wind Warning | UNR | 51 hr |
| Oct 16, 3:39 PM CDT | Wind Advisory | UNR | 51 hr |
| Nov 9, 3:55 PM CST | Winter Weather Advisory | UNR | 31 hr |
| Nov 9, 6:01 PM CST | Dense Fog Advisory | UNR | 13 hr |
| Nov 10, 5:10 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 21, 4:21 AM CST | High Wind Watch | UNR | 11 hr |
| Nov 21, 3:22 PM CST | Wind Advisory | UNR | 29 hr |
| Dec 8, 4:14 PM CST | Wind Advisory | UNR | 17 hr |
| Dec 9, 9:07 AM CST | Winter Weather Advisory | UNR | 9 hr |
| Dec 14, 10:37 PM CST | Freezing Rain Advisory | UNR | 6 hr |
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 | 19 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 8 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 13 |
| Winter | |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Hard Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 2 |
| Wind Advisory | 20 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
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.