Alert archive / South Dakota / Spink County
Weather alerts in Spink County, South Dakota, 2017
125 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Spink County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 125
- Warnings
- 41
- Watches
- 14
- Advisories
- 34
- Busiest month
- July34 alerts
- Busiest day
- June 13, 201713 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
4 of 5 tornado warnings covering Spink County in 2017 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.
Spink County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 4 | 20% | 2 | 100% | 12 min |
| Severe thunderstorm warnings | 29 | 25 | 14% | 20 | 80% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 19 | 7 | 63% | 16 | 63% | 15 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 201 | 138 | 31% | 306 | 81% | 20 min |
| NWS Aberdeen, SD: flash flood warnings | 2 | 1 | 50% | 5 | 20% | 64 min |
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 1, 3:54 AM CST | Winter Weather Advisory | ABR | 50 hr |
| Jan 3, 11:34 AM CST | Wind Chill Advisory | ABR | 68 hr |
| Jan 9, 3:12 PM CST | Winter Weather Advisory | ABR | 26 hr |
| Jan 10, 1:32 AM CST | Freezing Rain Advisory | ABR | 4 hr |
| Jan 11, 2:55 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Jan 12, 2:58 AM CST | Winter Weather Advisory | ABR | 12 hr |
| Jan 12, 3:07 PM CST | Wind Chill Advisory | ABR | 16 hr |
| Jan 19, 12:34 AM CST | Dense Fog Advisory | ABR | 11 hr |
| Jan 19, 3:05 PM CST | Dense Fog Advisory | ABR | 21 hr |
| Jan 23, 1:50 PM CST | Winter Weather Advisory | ABR | 14 hr |
| Jan 24, 3:28 AM CST | Winter Weather Advisory | ABR | 27 hr |
| Jan 30, 2:48 AM CST | Wind Advisory | ABR | 15 hr |
| Feb 22, 2:58 AM CST | Winter Storm Watch | ABR | 24 hr |
| Mar 5, 3:25 PM CST | High Wind Watch | ABR | 36 hr |
| Mar 5, 3:25 PM CST | High Wind Warning | ABR | 54 hr |
| Mar 6, 4:43 AM CST | Wind Advisory | ABR | 51 hr |
| Mar 10, 3:30 PM CST | Winter Storm Watch | ABR | 31 hr |
| Mar 11, 10:38 PM CST | Winter Storm Warning | ABR | 25 hr |
| Mar 12, 7:14 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 7, 9:50 AM CDT | Wind Advisory | ABR | 9 hr |
| Apr 12, 11:39 PM CDT | Dense Fog Advisory | ABR | 10 hr |
| May 23, 2:57 PM CDT | Frost Advisory | ABR | 16 hr |
| May 28, 3:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| May 28, 4:26 PM CDT | Severe Thunderstorm Warning | ABR | 34 min |
| May 28, 4:54 PM CDT | Severe Thunderstorm Warning | ABR | 36 min |
| May 28, 5:25 PM CDT | Severe Thunderstorm Warning | ABR | 50 min |
| May 28, 6:58 PM CDT | Special Weather Statement | ABR | 32 min |
| May 30, 2:09 PM CDT | Frost Advisory | ABR | 17 hr |
| Jun 10, 9:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 2:02 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 2:37 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 11, 3:07 AM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jun 11, 4:52 AM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jun 12, 11:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 12, 11:28 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 13, 2:33 AM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 13, 2:39 AM CDT | Severe Thunderstorm Warning | ABR | 51 min |
| Jun 13, 2:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 13, 3:13 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 13, 4:08 PM CDT | Severe Thunderstorm Warning | ABR | 52 min |
| Jun 13, 4:21 PM CDT | Tornado Warning | ABR | 39 min |
| Jun 13, 4:51 PM CDT | Severe Thunderstorm Warning | ABR | 39 min |
| Jun 13, 5:17 PM CDT | Severe Thunderstorm Warning | ABR | 43 min |
| Jun 13, 5:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:44 PM CDT | Severe Thunderstorm Warning | ABR | 46 min |
| Jun 13, 6:43 PM CDT | Severe Thunderstorm Warning | ABR | 47 min |
| Jun 13, 7:10 PM CDT | Severe Thunderstorm Warning | ABR | 65 min |
| Jun 21, 7:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 2:13 AM CDT | Special Weather Statement | ABR | 47 min |
| Jun 22, 3:11 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 27, 7:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 5, 5:52 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 6:32 PM CDT | Severe Thunderstorm Warning | ABR | 43 min |
| Jul 5, 6:42 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jul 5, 7:08 PM CDT | Severe Thunderstorm Warning | ABR | 52 min |
| Jul 5, 7:31 PM CDT | Special Weather Statement | ABR | 44 min |
| Jul 5, 7:54 PM CDT | Severe Thunderstorm Warning | ABR | 51 min |
| Jul 5, 8:32 PM CDT | Severe Thunderstorm Warning | ABR | 26 min |
| Jul 11, 4:20 AM CDT | Heat Advisory | ABR | 15 hr |
| Jul 11, 3:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 17, 5:45 PM CDT | Special Weather Statement | ABR | 45 min |
| Jul 18, 5:38 AM CDT | Special Weather Statement | ABR | 52 min |
| Jul 19, 7:01 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 19, 9:55 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 10:24 AM CDT | Severe Thunderstorm Warning | ABR | 66 min |
| Jul 19, 10:24 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 19, 10:45 AM CDT | Special Weather Statement | ABR | 45 min |
| Jul 20, 3:22 PM CDT | Heat Advisory | ABR | 29 hr |
| Jul 20, 10:26 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 20, 11:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 21, 2:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 3:07 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 21, 3:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 21, 9:34 PM CDT | Special Weather Statement | ABR | 26 min |
| Jul 21, 9:48 PM CDT | Severe Thunderstorm Warning | ABR | 42 min |
| Jul 21, 10:21 PM CDT | Severe Thunderstorm Warning | ABR | 39 min |
| Jul 21, 10:27 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jul 21, 10:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 21, 10:42 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jul 21, 10:44 PM CDT | Severe Thunderstorm Warning | ABR | 46 min |
| Jul 21, 11:11 PM CDT | Severe Thunderstorm Warning | ABR | 64 min |
| Jul 21, 11:13 PM CDT | Severe Thunderstorm Warning | ABR | 32 min |
| Jul 21, 11:27 PM CDT | Severe Thunderstorm Warning | ABR | 63 min |
| Jul 25, 2:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 3:22 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 12, 2:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 25, 3:38 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 4:35 PM CDT | Special Weather Statement | ABR | 40 min |
| Aug 25, 5:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 2:48 AM CDT | Special Weather Statement | ABR | 87 min |
| Sep 19, 1:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Sep 19, 3:37 PM CDT | Tornado Watch | SPC | 8 hr |
| Sep 19, 6:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Sep 19, 7:40 PM CDT | Tornado Warning | ABR | 35 min |
| Sep 19, 7:46 PM CDT | Severe Thunderstorm Warning | ABR | 44 min |
| Sep 19, 8:13 PM CDT | Tornado Warning | ABR | 32 min |
| Sep 19, 8:23 PM CDT | Severe Thunderstorm Warning | ABR | 37 min |
| Sep 19, 8:28 PM CDT | Tornado Warning | ABR | 32 min |
| Sep 19, 8:53 PM CDT | Tornado Warning | ABR | 37 min |
| Sep 19, 8:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 22, 12:55 AM CDT | Severe Thunderstorm Warning | ABR | 65 min |
| Oct 3, 2:46 AM CDT | Frost Advisory | ABR | 31 hr |
| Oct 7, 3:29 AM CDT | Wind Advisory | ABR | 12 hr |
| Oct 8, 3:28 AM CDT | Freeze Watch | ABR | 23 hr |
| Oct 9, 2:46 AM CDT | Freeze Warning | ABR | 30 hr |
| Oct 22, 3:03 PM CDT | Wind Advisory | ABR | 28 hr |
| Oct 22, 11:59 PM CDT | Special Weather Statement | ABR | 91 min |
| Oct 25, 2:55 PM CDT | Wind Advisory | ABR | 45 hr |
| Nov 14, 1:19 AM CST | Dense Fog Advisory | ABR | 11 hr |
| Nov 21, 12:43 AM CST | Wind Advisory | ABR | 8 hr |
| Nov 23, 2:07 PM CST | Wind Advisory | ABR | 24 hr |
| Nov 29, 2:55 AM CST | Wind Advisory | ABR | 21 hr |
| Dec 3, 3:38 AM CST | Winter Storm Watch | ABR | 12 hr |
| Dec 3, 3:08 PM CST | Blizzard Warning | ABR | 28 hr |
| Dec 4, 3:54 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 11, 2:47 AM CST | Wind Advisory | ABR | 12 hr |
| Dec 12, 3:07 PM CST | Wind Advisory | ABR | 23 hr |
| Dec 13, 5:13 PM CST | Winter Weather Advisory | ABR | 13 hr |
| Dec 24, 4:01 AM CST | Wind Chill Advisory | ABR | 32 hr |
| Dec 25, 4:09 AM CST | Wind Chill Advisory | ABR | 32 hr |
| Dec 25, 1:26 PM CST | Wind Chill Warning | ABR | 23 hr |
| Dec 26, 1:37 PM CST | Wind Chill Advisory | ABR | 21 hr |
| Dec 29, 2:18 AM CST | Wind Chill Warning | ABR | 34 hr |
| Dec 29, 2:18 AM CST | Wind Chill Advisory | ABR | 46 hr |
| Dec 30, 2:54 AM CST | Wind Chill Warning | ABR | 57 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.