Alert archive / South Dakota / Bennett County
Weather alerts in Bennett County, South Dakota, 2008
136 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 136
- Warnings
- 38
- Watches
- 27
- Advisories
- 31
- Busiest month
- June37 alerts
- Busiest day
- June 1, 20087 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 2 tornado warnings covering Bennett County in 2008 had a tornado report inside them.
Bennett County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 23 | 14 | 39% | 4 | 100% | 36 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Rapid City, SD: tornado warnings | 20 | 8 | 60% | 11 | 73% | 15 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 496 | 269 | 46% | 410 | 90% | 28 min |
| NWS Rapid City, SD: flash flood warnings | 13 | 1 | 92% | 2 | 50% | 93 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, 2:56 PM MST | Winter Weather Advisory | UNR | 44 hr |
| Jan 21, 2:48 PM MST | Wind Chill Advisory | UNR | 18 hr |
| Jan 22, 2:54 PM MST | Blowing Snow Advisory | UNR | 19 hr |
| Jan 28, 3:35 AM MST | Winter Weather Advisory | UNR | 23 hr |
| Jan 28, 2:46 PM MST | Wind Chill Advisory | UNR | 26 hr |
| Feb 8, 1:25 PM MST | Winter Weather Advisory | UNR | 38 hr |
| Feb 10, 3:23 PM MST | Winter Weather Advisory | UNR | 26 hr |
| Feb 16, 2:53 PM MST | Wind Advisory | UNR | 28 hr |
| Mar 1, 2:53 PM MST | Wind Advisory | UNR | 28 hr |
| Mar 15, 2:35 PM MDT | Snow Advisory | UNR | 23 hr |
| Mar 29, 4:01 AM MDT | Wind Advisory | UNR | 11 hr |
| Mar 29, 2:26 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 29, 2:56 PM MDT | Winter Storm Watch | UNR | 37 hr |
| Mar 30, 11:45 AM MDT | Winter Storm Warning | UNR | 24 hr |
| Apr 8, 2:43 AM MDT | Winter Storm Watch | UNR | 49 hr |
| Apr 9, 3:04 PM MDT | Winter Storm Warning | UNR | 44 hr |
| Apr 11, 4:11 AM MDT | Wind Advisory | UNR | 14 hr |
| Apr 20, 6:05 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Apr 23, 4:38 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 23, 5:48 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 23, 9:32 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Apr 30, 4:38 AM MDT | Winter Storm Watch | UNR | 34 hr |
| Apr 30, 4:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 1, 2:18 PM MDT | Snow and Blowing Snow Advisory | UNR | 24 hr |
| May 6, 12:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 9, 5:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| May 10, 3:26 AM MDT | Wind Advisory | UNR | 11 hr |
| May 21, 2:55 AM MDT | Wind Advisory | UNR | 11 hr |
| May 22, 2:36 PM MDT | Flood Watch | UNR | 42 hr |
| May 22, 9:16 PM MDT | Areal Flood Advisory | UNR | 12 hr |
| May 23, 12:20 PM MDT | Areal Flood Warning | UNR | 36 hr |
| May 23, 5:19 PM MDT | Wind Advisory | UNR | 4 hr |
| May 29, 12:33 PM MDT | Tornado Watch | SPC | 7 hr |
| May 29, 5:06 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| May 29, 5:57 PM MDT | Severe Thunderstorm Warning | UNR | 51 min |
| Jun 1, 2:28 PM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jun 1, 2:29 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 1, 3:21 PM MDT | Severe Thunderstorm Warning | UNR | 51 min |
| Jun 1, 4:23 PM MDT | Severe Thunderstorm Warning | UNR | 97 min |
| Jun 1, 4:32 PM MDT | Tornado Warning | UNR | 43 min |
| Jun 1, 4:42 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 1, 5:06 PM MDT | Tornado Warning | UNR | 40 min |
| Jun 1, 6:45 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jun 1, 6:47 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jun 1, 8:46 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Jun 2, 6:33 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 3, 1:38 AM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 3, 1:53 AM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 3, 3:03 PM MDT | Severe Thunderstorm Warning | UNR | 57 min |
| Jun 3, 3:55 PM MDT | Severe Thunderstorm Warning | UNR | 52 min |
| Jun 4, 3:22 AM MDT | Flood Watch | UNR | 40 hr |
| Jun 4, 10:52 PM MDT | Areal Flood Advisory | UNR | 18 hr |
| Jun 5, 4:25 PM MDT | Areal Flood Warning | UNR | 48 hr |
| Jun 9, 2:01 PM MDT | Flood Watch | UNR | 40 hr |
| Jun 17, 12:40 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jun 17, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 17, 6:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 18, 12:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jun 18, 1:19 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 5:29 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 4:52 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 6:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jun 24, 10:52 PM MDT | Severe Thunderstorm Warning | UNR | 24 min |
| Jun 25, 7:10 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jun 25, 7:31 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 10:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 26, 2:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 26, 6:14 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 26, 9:21 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Jun 26, 9:46 PM MDT | Severe Thunderstorm Warning | UNR | 29 min |
| Jun 26, 10:03 PM MDT | Severe Thunderstorm Warning | UNR | 57 min |
| Jun 28, 3:05 AM MDT | Wind Advisory | UNR | 12 hr |
| Jul 15, 2:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 15, 4:05 PM MDT | Areal Flood Advisory | UNR | 4 hr |
| Jul 16, 3:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 16, 4:51 PM MDT | Severe Thunderstorm Warning | UNR | 54 min |
| Jul 18, 7:01 AM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jul 18, 4:32 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 18, 7:45 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 7:53 PM MDT | Severe Thunderstorm Warning | UNR | 79 min |
| Jul 18, 10:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 20, 3:45 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 4:22 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 6:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 22, 11:38 AM MDT | Flash Flood Watch | UNR | 16 hr |
| Jul 23, 1:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 23, 7:09 PM MDT | Mesoscale Discussion | SPC | 96 min |
| Jul 24, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 24, 6:36 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 24, 6:42 PM MDT | Severe Thunderstorm Warning | UNR | 78 min |
| Jul 24, 8:08 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 26, 7:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jul 26, 8:02 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 8:54 PM MDT | Severe Thunderstorm Warning | UNR | 47 min |
| Jul 26, 10:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Aug 5, 12:26 AM MDT | Severe Thunderstorm Warning | UNR | 21 min |
| Aug 5, 8:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 1:58 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 12, 1:30 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Aug 12, 5:02 PM MDT | Severe Thunderstorm Warning | UNR | 73 min |
| Aug 12, 5:26 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Aug 12, 5:41 PM MDT | Severe Thunderstorm Warning | UNR | 64 min |
| Aug 26, 1:33 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 26, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 26, 4:08 PM MDT | Severe Thunderstorm Warning | UNR | 44 min |
| Aug 30, 4:10 AM MDT | Wind Advisory | UNR | 40 hr |
| Sep 1, 3:36 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Sep 10, 4:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Sep 21, 4:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Sep 22, 4:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Sep 22, 4:57 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 22, 6:37 PM MDT | Severe Thunderstorm Warning | UNR | 53 min |
| Sep 22, 7:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Sep 29, 1:49 PM MDT | Frost Advisory | UNR | 14 hr |
| Oct 8, 2:31 PM MDT | Freeze Warning | UNR | 12 hr |
| Oct 22, 3:41 AM MDT | Wind Advisory | UNR | 14 hr |
| Oct 26, 2:30 AM MDT | High Wind Warning | UNR | 16 hr |
| Nov 4, 2:35 AM MST | Winter Storm Watch | UNR | 32 hr |
| Nov 5, 2:25 AM MST | Blizzard Warning | UNR | 57 hr |
| Nov 5, 2:25 AM MST | Winter Storm Warning | UNR | 39 hr |
| Nov 12, 3:24 AM MST | High Wind Watch | UNR | 35 hr |
| Nov 13, 2:26 PM MST | High Wind Warning | UNR | 27 hr |
| Nov 13, 2:26 PM MST | Wind Advisory | UNR | 27 hr |
| Nov 14, 1:17 PM MST | Mesoscale Discussion | SPC | 58 min |
| Nov 29, 2:18 PM MST | Wind Advisory | UNR | 24 hr |
| Dec 2, 4:05 AM MST | Winter Weather Advisory | UNR | 23 hr |
| Dec 7, 3:12 PM MST | Winter Weather Advisory | UNR | 23 hr |
| Dec 12, 4:27 AM MST | Blizzard Watch | UNR | 23 hr |
| Dec 13, 3:56 AM MST | Blizzard Warning | UNR | 33 hr |
| Dec 14, 8:53 AM MST | Wind Chill Warning | UNR | 26 hr |
| Dec 15, 10:59 AM MST | Wind Chill Advisory | UNR | 9 hr |
| Dec 19, 2:34 PM MST | Wind Chill Warning | UNR | 44 hr |
| Dec 19, 2:34 PM MST | Wind Chill Advisory | UNR | 26 hr |
| Dec 21, 2:05 PM MST | Wind Chill Advisory | UNR | 20 hr |
| Dec 29, 1:58 PM MST | Wind Advisory | UNR | 26 hr |
| Dec 29, 8:05 PM MST | High Wind Warning | UNR | 20 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 archive20072009
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.