Alert archive / South Dakota / Bennett County
Weather alerts in Bennett County, South Dakota, 2016
139 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bennett County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 139
- Warnings
- 40
- Watches
- 23
- Advisories
- 19
- Busiest month
- July43 alerts
- Busiest day
- July 31, 201610 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Bennett County in 2016 had a tornado report inside them.
Bennett County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 28 | 19 | 32% | 12 | 100% | 17 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Rapid City, SD: tornado warnings | 11 | 3 | 73% | 10 | 50% | 4 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 391 | 279 | 29% | 553 | 87% | 24 min |
| NWS Rapid City, SD: flash flood warnings | 6 | 5 | 17% | 7 | 100% | 88 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 19, 6:33 PM MST | Dense Fog Advisory | UNR | 8 hr |
| Jan 24, 2:31 AM MST | Winter Weather Advisory | UNR | 35 hr |
| Feb 5, 2:48 AM MST | High Wind Watch | UNR | 23 hr |
| Feb 5, 1:52 PM MST | High Wind Warning | UNR | 54 hr |
| Feb 17, 2:02 PM MST | High Wind Warning | UNR | 49 hr |
| Feb 23, 7:38 PM MST | Wind Advisory | UNR | 21 hr |
| Mar 21, 3:23 PM MDT | Winter Weather Advisory | UNR | 51 hr |
| Mar 29, 2:43 PM MDT | Winter Weather Advisory | UNR | 19 hr |
| Mar 30, 2:31 PM MDT | Wind Advisory | UNR | 29 hr |
| Apr 4, 2:52 AM MDT | High Wind Watch | UNR | 25 hr |
| Apr 5, 3:40 AM MDT | High Wind Warning | UNR | 26 hr |
| Apr 6, 2:59 AM MDT | Wind Advisory | UNR | 16 hr |
| Apr 6, 2:45 PM MDT | Wind Advisory | UNR | 28 hr |
| Apr 14, 2:42 PM MDT | Wind Advisory | UNR | 15 hr |
| Apr 16, 2:30 PM MDT | Flood Watch | UNR | 37 hr |
| Apr 29, 3:04 PM MDT | Winter Weather Advisory | UNR | 17 hr |
| May 6, 5:26 PM MDT | Special Weather Statement | LBF | 49 min |
| May 6, 6:56 PM MDT | Special Weather Statement | LBF | 49 min |
| May 13, 2:46 AM MDT | Freeze Warning | UNR | 29 hr |
| May 14, 2:40 PM MDT | Frost Advisory | UNR | 12 hr |
| May 22, 2:20 PM MDT | Tornado Watch | SPC | 7 hr |
| May 22, 5:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| May 22, 8:28 PM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| May 22, 8:59 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 24, 6:25 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| May 24, 8:02 PM MDT | Mesoscale Discussion | SPC | 58 min |
| May 24, 8:30 PM MDT | Special Weather Statement | LBF | 30 min |
| May 30, 1:16 PM MDT | Mesoscale Discussion | SPC | 59 min |
| May 30, 1:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 4:06 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 13, 1:10 AM MDT | Special Weather Statement | LBF | 65 min |
| Jun 13, 12:45 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 13, 6:00 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 13, 6:06 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jun 13, 6:46 PM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jun 13, 7:02 PM MDT | Tornado Warning | UNR | 28 min |
| Jun 13, 7:30 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jun 13, 7:38 PM MDT | Severe Thunderstorm Warning | UNR | 82 min |
| Jun 14, 2:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jun 24, 7:17 PM MDT | Severe Thunderstorm Warning | UNR | 43 min |
| Jun 28, 1:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 2:43 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 29, 6:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 29, 6:44 PM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jun 29, 7:38 PM MDT | Severe Thunderstorm Warning | UNR | 67 min |
| Jul 3, 7:21 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jul 5, 8:40 PM MDT | Special Weather Statement | UNR | 35 min |
| Jul 5, 9:00 PM MDT | Severe Thunderstorm Warning | UNR | 46 min |
| Jul 6, 1:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 6, 2:21 PM MDT | Tornado Watch | SPC | 7 hr |
| Jul 6, 3:24 PM MDT | Severe Thunderstorm Warning | UNR | 21 min |
| Jul 6, 5:48 PM MDT | Mesoscale Discussion | SPC | 57 min |
| Jul 10, 2:06 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 10, 7:12 PM MDT | Special Weather Statement | UNR | 33 min |
| Jul 10, 9:13 PM MDT | Special Weather Statement | LBF | 47 min |
| Jul 10, 9:14 PM MDT | Special Weather Statement | UNR | 31 min |
| Jul 10, 9:51 PM MDT | Special Weather Statement | UNR | 24 min |
| Jul 15, 12:51 AM MDT | Special Weather Statement | UNR | 39 min |
| Jul 15, 2:10 AM MDT | Special Weather Statement | UNR | 65 min |
| Jul 15, 2:11 AM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 15, 3:08 AM MDT | Special Weather Statement | LBF | 52 min |
| Jul 16, 2:33 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 6:06 PM MDT | Severe Thunderstorm Warning | UNR | 39 min |
| Jul 16, 6:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Jul 16, 6:25 PM MDT | Tornado Warning | UNR | 23 min |
| Jul 16, 6:46 PM MDT | Severe Thunderstorm Warning | UNR | 19 min |
| Jul 19, 3:24 AM MDT | Excessive Heat Warning | UNR | 4 days |
| Jul 26, 4:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 26, 5:05 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 6:47 PM MDT | Special Weather Statement | LBF | 43 min |
| Jul 26, 7:34 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Jul 27, 2:11 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 29, 9:49 PM MDT | Special Weather Statement | UNR | 26 min |
| Jul 29, 10:13 PM MDT | Special Weather Statement | UNR | 62 min |
| Jul 29, 10:31 PM MDT | Special Weather Statement | UNR | 29 min |
| Jul 30, 2:32 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 5:02 PM MDT | Special Weather Statement | UNR | 43 min |
| Jul 30, 5:44 PM MDT | Severe Thunderstorm Warning | UNR | 76 min |
| Jul 30, 6:57 PM MDT | Severe Thunderstorm Warning | UNR | 63 min |
| Jul 30, 8:26 PM MDT | Severe Thunderstorm Warning | UNR | 94 min |
| Jul 30, 8:32 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 30, 9:57 PM MDT | Severe Thunderstorm Warning | UNR | 78 min |
| Jul 30, 10:03 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 30, 11:07 PM MDT | Severe Thunderstorm Warning | UNR | 53 min |
| Jul 31, 4:18 AM MDT | Special Weather Statement | UNR | 27 min |
| Jul 31, 4:51 AM MDT | Special Weather Statement | UNR | 24 min |
| Jul 31, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 31, 4:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 31, 7:46 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 2, 7:58 PM MDT | Special Weather Statement | LBF | 32 min |
| Aug 3, 5:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 6:49 PM MDT | Special Weather Statement | LBF | 41 min |
| Aug 8, 6:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 8, 7:24 PM MDT | Severe Thunderstorm Warning | UNR | 46 min |
| Aug 8, 9:05 PM MDT | Special Weather Statement | UNR | 55 min |
| Aug 9, 4:16 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 10, 2:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Aug 10, 4:18 PM MDT | Mesoscale Discussion | SPC | 57 min |
| Aug 10, 6:17 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Aug 10, 6:41 PM MDT | Special Weather Statement | LBF | 49 min |
| Aug 10, 6:43 PM MDT | Severe Thunderstorm Warning | UNR | 47 min |
| Aug 11, 4:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 11, 5:29 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 11, 6:41 PM MDT | Severe Thunderstorm Warning | UNR | 49 min |
| Aug 14, 5:15 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 14, 8:04 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Sep 2, 2:57 AM MDT | Wind Advisory | UNR | 15 hr |
| Sep 4, 1:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Sep 4, 2:24 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 4, 3:22 PM MDT | Severe Thunderstorm Warning | UNR | 53 min |
| Sep 4, 5:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Sep 4, 5:40 PM MDT | Severe Thunderstorm Warning | UNR | 65 min |
| Sep 4, 5:50 PM MDT | Special Weather Statement | LBF | 40 min |
| Sep 4, 6:31 PM MDT | Severe Thunderstorm Warning | UNR | 74 min |
| Sep 4, 7:57 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Sep 23, 1:39 PM MDT | Wind Advisory | UNR | 50 hr |
| Sep 23, 2:21 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 23, 8:51 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Sep 25, 1:44 PM MDT | Frost Advisory | UNR | 17 hr |
| Oct 3, 12:46 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Oct 3, 1:04 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Oct 3, 4:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 3, 4:59 PM MDT | Severe Thunderstorm Warning | UNR | 46 min |
| Oct 3, 5:34 PM MDT | Severe Thunderstorm Warning | UNR | 43 min |
| Oct 6, 2:54 PM MDT | Freeze Warning | UNR | 18 hr |
| Oct 16, 2:08 PM MDT | Wind Advisory | UNR | 28 hr |
| Oct 31, 2:57 AM MDT | Wind Advisory | UNR | 15 hr |
| Nov 15, 2:01 PM MST | Winter Storm Watch | UNR | 37 hr |
| Nov 16, 2:45 PM MST | Winter Storm Warning | UNR | 42 hr |
| Nov 28, 2:14 AM MST | Winter Weather Advisory | UNR | 57 hr |
| Dec 7, 2:41 PM MST | Wind Chill Advisory | UNR | 20 hr |
| Dec 13, 2:02 PM MST | Winter Storm Watch | UNR | 47 hr |
| Dec 15, 2:49 AM MST | Winter Storm Warning | UNR | 47 hr |
| Dec 16, 9:07 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Dec 17, 1:42 AM MST | Wind Chill Warning | UNR | 33 hr |
| Dec 20, 2:38 PM MST | Wind Advisory | UNR | 23 hr |
| Dec 21, 1:54 PM MST | Blizzard Watch | UNR | 62 hr |
| Dec 23, 1:57 PM MST | Winter Storm Warning | UNR | 67 hr |
| Dec 25, 11:56 AM MST | Mesoscale Discussion | SPC | 5 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 | 28 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 15 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 33 |
| Special Weather Statement | 24 |
| Flooding | |
| Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 3 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 10 |
| 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 archive20152017
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.