Alert archive / South Dakota / Dewey County
Weather alerts in Dewey County, South Dakota, 2013
154 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dewey County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 154
- Warnings
- 63
- Watches
- 22
- Advisories
- 36
- Busiest month
- August30 alerts
- Busiest day
- August 28, 201316 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Dewey County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 54 | 35 | 35% | 23 | 91% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 15 | 5 | 67% | 9 | 56% | 14 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 182 | 127 | 30% | 249 | 79% | 22 min |
| NWS Aberdeen, SD: flash flood warnings | 13 | 10 | 23% | 13 | 100% | 96 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 7, 3:22 AM MST | High Wind Watch | ABR | 11 hr |
| Jan 7, 1:53 PM MST | Wind Advisory | ABR | 23 hr |
| Jan 9, 2:54 AM MST | Winter Storm Watch | ABR | 35 hr |
| Jan 10, 2:23 PM MST | Winter Storm Warning | ABR | 36 hr |
| Jan 10, 2:23 PM MST | Winter Weather Advisory | ABR | 45 hr |
| Jan 18, 12:29 PM MST | Wind Advisory | ABR | 29 hr |
| Jan 20, 2:32 AM MST | Wind Chill Advisory | ABR | 32 hr |
| Jan 28, 2:59 AM MST | Winter Weather Advisory | ABR | 23 hr |
| Jan 30, 3:24 AM MST | Wind Chill Warning | ABR | 53 hr |
| Jan 30, 3:24 AM MST | Wind Chill Advisory | ABR | 48 hr |
| Jan 31, 11:47 AM MST | Wind Chill Advisory | ABR | 3 hr |
| Feb 2, 3:24 AM MST | Wind Advisory | ABR | 6 hr |
| Feb 2, 8:57 AM MST | Wind Advisory | ABR | 8 hr |
| Feb 7, 2:39 PM MST | Winter Storm Watch | ABR | 20 hr |
| Feb 8, 10:11 AM MST | Blizzard Watch | ABR | 17 hr |
| Feb 9, 3:22 AM MST | Blizzard Warning | ABR | 56 hr |
| Feb 12, 2:07 PM MST | Wind Advisory | ABR | 29 hr |
| Feb 17, 2:17 PM MST | Wind Advisory | ABR | 24 hr |
| Feb 18, 2:19 PM MST | Wind Chill Advisory | ABR | 44 hr |
| Mar 3, 2:50 AM MST | Winter Weather Advisory | ABR | 50 hr |
| Mar 3, 1:36 PM MST | Wind Advisory | ABR | 41 hr |
| Mar 17, 3:26 AM MDT | Wind Advisory | ABR | 39 hr |
| Apr 8, 3:51 AM MDT | Winter Storm Watch | ABR | 10 hr |
| Apr 8, 3:51 AM MDT | Winter Storm Warning | ABR | 3 days |
| Apr 13, 3:04 AM MDT | Winter Weather Advisory | ABR | 42 hr |
| Apr 15, 3:02 AM MDT | Winter Storm Watch | ABR | 59 hr |
| Apr 16, 2:28 PM MDT | Winter Weather Advisory | ABR | 24 hr |
| May 14, 2:26 AM MDT | Wind Advisory | ABR | 16 hr |
| May 17, 2:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| May 18, 2:31 PM MDT | Mesoscale Discussion | SPC | 59 min |
| May 18, 4:24 PM MDT | Mesoscale Discussion | SPC | 66 min |
| May 18, 4:31 PM MDT | Severe Thunderstorm Warning | ABR | 44 min |
| May 18, 4:46 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 18, 5:06 PM MDT | Severe Thunderstorm Warning | ABR | 39 min |
| May 18, 5:11 PM MDT | Severe Thunderstorm Warning | ABR | 49 min |
| May 18, 5:46 PM MDT | Severe Thunderstorm Warning | ABR | 44 min |
| May 18, 5:52 PM MDT | Severe Thunderstorm Warning | ABR | 38 min |
| May 18, 9:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| May 24, 3:09 AM MDT | Wind Advisory | ABR | 13 hr |
| May 25, 1:52 PM MDT | Tornado Watch | SPC | 8 hr |
| May 25, 7:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| May 25, 9:16 PM MDT | Severe Thunderstorm Warning | ABR | 44 min |
| May 25, 9:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| May 26, 12:17 AM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 26, 12:42 AM MDT | Severe Thunderstorm Warning | ABR | 63 min |
| May 26, 1:45 AM MDT | Severe Thunderstorm Warning | ABR | 45 min |
| May 26, 2:20 AM MDT | Severe Thunderstorm Warning | ABR | 55 min |
| May 26, 2:24 AM MDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 11:36 AM MDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 11:51 AM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 27, 3:52 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 6:11 PM MDT | Mesoscale Discussion | SPC | 94 min |
| May 30, 7:14 PM MDT | Areal Flood Warning | ABR | 48 hr |
| Jun 11, 9:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 17, 7:23 PM MDT | Severe Thunderstorm Warning | ABR | 52 min |
| Jun 17, 8:04 PM MDT | Severe Thunderstorm Warning | ABR | 56 min |
| Jun 20, 2:26 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 20, 5:17 PM MDT | Severe Thunderstorm Warning | ABR | 58 min |
| Jun 20, 6:06 PM MDT | Severe Thunderstorm Warning | ABR | 54 min |
| Jun 21, 8:09 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 11:01 AM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 22, 6:04 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jun 22, 6:32 PM MDT | Severe Thunderstorm Warning | ABR | 43 min |
| Jun 22, 6:42 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 7:12 PM MDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 22, 7:48 PM MDT | Severe Thunderstorm Warning | ABR | 42 min |
| Jul 8, 8:31 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 9:30 PM MDT | Severe Thunderstorm Warning | ABR | 45 min |
| Jul 8, 9:59 PM MDT | Severe Thunderstorm Warning | ABR | 46 min |
| Jul 8, 10:12 PM MDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jul 8, 10:14 PM MDT | Severe Thunderstorm Warning | ABR | 46 min |
| Jul 8, 10:43 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 10:56 PM MDT | Severe Thunderstorm Warning | ABR | 49 min |
| Jul 8, 11:53 PM MDT | Severe Thunderstorm Warning | ABR | 37 min |
| Jul 9, 12:13 AM MDT | Severe Thunderstorm Warning | ABR | 47 min |
| Jul 13, 2:47 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 7:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jul 14, 12:01 AM MDT | Severe Thunderstorm Warning | ABR | 59 min |
| Jul 20, 5:48 PM MDT | Severe Thunderstorm Warning | ABR | 57 min |
| Jul 20, 7:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 21, 4:27 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 29, 1:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 30, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 30, 7:17 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Aug 4, 5:27 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Aug 5, 6:52 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 10, 9:53 PM MDT | Severe Thunderstorm Warning | ABR | 37 min |
| Aug 10, 10:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 12, 1:26 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 20, 1:47 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 2:20 AM MDT | Heat Advisory | ABR | 17 hr |
| Aug 25, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Aug 25, 5:47 PM MDT | Severe Thunderstorm Warning | ABR | 43 min |
| Aug 25, 6:46 PM MDT | Severe Thunderstorm Warning | ABR | 44 min |
| Aug 25, 7:24 PM MDT | Severe Thunderstorm Warning | ABR | 51 min |
| Aug 26, 2:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Aug 27, 1:42 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Aug 27, 7:16 PM MDT | Severe Thunderstorm Warning | ABR | 59 min |
| Aug 27, 8:19 PM MDT | Severe Thunderstorm Warning | ABR | 56 min |
| Aug 27, 9:14 PM MDT | Severe Thunderstorm Warning | ABR | 61 min |
| Aug 27, 9:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Aug 27, 9:25 PM MDT | Severe Thunderstorm Warning | ABR | 50 min |
| Aug 27, 10:39 PM MDT | Severe Thunderstorm Warning | ABR | 51 min |
| Aug 27, 11:23 PM MDT | Severe Thunderstorm Warning | ABR | 67 min |
| Aug 28, 12:08 AM MDT | Severe Thunderstorm Warning | ABR | 52 min |
| Aug 28, 12:21 AM MDT | Severe Thunderstorm Warning | ABR | 39 min |
| Aug 28, 1:02 AM MDT | Severe Thunderstorm Warning | ABR | 58 min |
| Aug 28, 1:11 AM MDT | Severe Thunderstorm Warning | ABR | 64 min |
| Aug 28, 1:37 AM MDT | Heat Advisory | ABR | 16 hr |
| Aug 28, 1:54 AM MDT | Severe Thunderstorm Warning | ABR | 51 min |
| Aug 28, 2:00 AM MDT | Severe Thunderstorm Warning | ABR | 60 min |
| Aug 28, 2:41 AM MDT | Severe Thunderstorm Warning | ABR | 64 min |
| Aug 28, 1:37 PM MDT | Heat Advisory | ABR | 28 hr |
| Aug 30, 1:54 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 6, 2:49 AM MDT | Heat Advisory | ABR | 15 hr |
| Sep 7, 4:21 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 7, 10:00 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Sep 7, 10:39 PM MDT | Severe Thunderstorm Warning | ABR | 51 min |
| Sep 8, 12:04 AM MDT | Severe Thunderstorm Warning | ABR | 56 min |
| Sep 8, 3:52 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 8:58 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 10:27 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 11:14 PM MDT | Severe Thunderstorm Warning | ABR | 61 min |
| Sep 8, 11:38 PM MDT | Severe Thunderstorm Warning | ABR | 67 min |
| Sep 9, 12:06 AM MDT | Severe Thunderstorm Warning | ABR | 54 min |
| Sep 9, 12:13 AM MDT | Severe Thunderstorm Warning | ABR | 62 min |
| Sep 9, 1:57 AM MDT | Mesoscale Discussion | SPC | 63 min |
| Sep 18, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 18, 5:43 PM MDT | Severe Thunderstorm Warning | ABR | 47 min |
| Sep 18, 6:01 PM MDT | Severe Thunderstorm Warning | ABR | 29 min |
| Sep 18, 6:23 PM MDT | Severe Thunderstorm Warning | ABR | 52 min |
| Sep 18, 6:30 PM MDT | Severe Thunderstorm Warning | ABR | 45 min |
| Sep 18, 6:49 PM MDT | Severe Thunderstorm Warning | ABR | 26 min |
| Sep 18, 7:16 PM MDT | Severe Thunderstorm Warning | ABR | 44 min |
| Sep 30, 5:40 PM MDT | Wind Advisory | ABR | 5 hr |
| Oct 3, 3:02 AM MDT | Winter Storm Watch | ABR | 35 hr |
| Oct 3, 1:56 PM MDT | Wind Advisory | ABR | 52 hr |
| Oct 4, 3:14 AM MDT | Winter Storm Warning | ABR | 11 hr |
| Oct 4, 1:59 PM MDT | Blizzard Warning | ABR | 28 hr |
| Oct 10, 3:39 AM MDT | Wind Advisory | ABR | 41 hr |
| Oct 10, 1:35 PM MDT | High Wind Warning | ABR | 31 hr |
| Oct 14, 2:33 PM MDT | Wind Advisory | ABR | 22 hr |
| Oct 31, 2:09 PM MDT | Wind Advisory | ABR | 27 hr |
| Dec 2, 2:58 AM MST | Winter Storm Watch | ABR | 11 hr |
| Dec 2, 2:12 PM MST | Winter Storm Warning | ABR | 54 hr |
| Dec 4, 1:55 PM MST | Wind Chill Advisory | ABR | 69 hr |
| Dec 8, 2:49 AM MST | Wind Chill Advisory | ABR | 31 hr |
| Dec 10, 2:49 AM MST | Wind Chill Advisory | ABR | 32 hr |
| Dec 18, 2:02 PM MST | Winter Weather Advisory | ABR | 32 hr |
| Dec 19, 12:31 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 22, 2:17 AM MST | Wind Chill Advisory | ABR | 51 hr |
| Dec 23, 2:56 AM MST | Winter Weather Advisory | ABR | 37 hr |
| Dec 27, 2:04 PM MST | Wind Advisory | ABR | 27 hr |
| Dec 27, 2:12 PM MST | Wind Chill Advisory | ABR | 42 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 | 54 |
| Severe Thunderstorm Watch | 13 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 33 |
| Flooding | |
| Areal Flood Warning | 1 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 4 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 9 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 16 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.