Alert archive / South Dakota / Beadle County
Weather alerts in Beadle County, South Dakota, 2016
94 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Beadle County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 94
- Warnings
- 25
- Watches
- 17
- Advisories
- 26
- Busiest month
- July21 alerts
- Busiest day
- July 5, 20165 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Beadle County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 15 | 9 | 40% | 14 | 79% | 20 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Sioux Falls, SD: tornado warnings | 10 | 1 | 90% | 6 | 17% | 6 min |
| NWS Sioux Falls, SD: severe thunderstorm warnings | 182 | 116 | 36% | 239 | 82% | 17 min |
| NWS Sioux Falls, SD: flash flood warnings | 34 | 13 | 62% | 23 | 100% | 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 3, 9:23 PM CST | Dense Fog Advisory | FSD | 13 hr |
| Jan 6, 10:14 PM CST | Winter Weather Advisory | FSD | 11 hr |
| Jan 9, 3:45 AM CST | Wind Chill Advisory | FSD | 31 hr |
| Jan 16, 3:32 AM CST | Wind Chill Warning | FSD | 32 hr |
| Jan 16, 3:32 AM CST | Wind Chill Advisory | FSD | 53 hr |
| Jan 24, 3:11 PM CST | Winter Weather Advisory | FSD | 29 hr |
| Feb 5, 3:57 AM CST | High Wind Watch | FSD | 35 hr |
| Feb 6, 3:15 PM CST | Wind Advisory | FSD | 51 hr |
| Feb 13, 3:48 AM CST | Winter Weather Advisory | FSD | 32 hr |
| Feb 18, 2:51 PM CST | Wind Advisory | FSD | 24 hr |
| Mar 13, 9:58 PM CDT | Dense Fog Advisory | FSD | 14 hr |
| Apr 5, 4:00 PM CDT | Wind Advisory | FSD | 22 hr |
| Apr 6, 2:53 PM CDT | Wind Advisory | FSD | 27 hr |
| Apr 9, 1:28 PM CDT | Wind Advisory | FSD | 6 hr |
| Apr 24, 1:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 9, 5:27 PM CDT | Severe Thunderstorm Warning | FSD | 15 min |
| May 10, 2:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 13, 3:27 AM CDT | Freeze Warning | FSD | 30 hr |
| May 14, 2:25 PM CDT | Frost Advisory | FSD | 19 hr |
| May 22, 7:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 22, 8:22 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 25, 2:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 25, 6:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 25, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | 44 min |
| May 25, 6:37 PM CDT | Severe Thunderstorm Warning | FSD | 38 min |
| May 25, 7:08 PM CDT | Severe Thunderstorm Warning | FSD | 52 min |
| May 25, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | 46 min |
| May 30, 2:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| May 30, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 30, 6:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 2, 10:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 3, 1:28 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 9, 3:07 PM CDT | Heat Advisory | FSD | 54 hr |
| Jun 17, 11:13 AM CDT | Heat Advisory | FSD | 8 hr |
| Jun 17, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 3:14 AM CDT | Heat Advisory | FSD | 41 hr |
| Jun 19, 3:38 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 19, 5:33 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 22, 1:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 2:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 5, 3:29 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 4:03 PM CDT | Severe Thunderstorm Warning | FSD | 42 min |
| Jul 5, 4:35 PM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Jul 5, 5:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 6, 7:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 10:05 PM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Jul 9, 3:07 PM CDT | Heat Advisory | FSD | 24 hr |
| Jul 10, 1:04 AM CDT | Special Weather Statement | ABR | 56 min |
| Jul 10, 1:29 AM CDT | Severe Thunderstorm Warning | FSD | 46 min |
| Jul 16, 5:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 16, 6:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 18, 3:57 AM CDT | Excessive Heat Watch | FSD | 24 hr |
| Jul 19, 4:06 AM CDT | Excessive Heat Warning | FSD | 5 days |
| Jul 22, 2:16 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 3:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 22, 4:05 PM CDT | Severe Thunderstorm Warning | FSD | 40 min |
| Jul 22, 4:42 PM CDT | Severe Thunderstorm Warning | FSD | 17 min |
| Jul 22, 6:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 26, 12:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 26, 2:11 PM CDT | Flash Flood Warning | FSD | 3 hr |
| Aug 4, 3:13 AM CDT | Severe Thunderstorm Warning | FSD | 47 min |
| Aug 9, 2:40 PM CDT | Heat Advisory | FSD | 29 hr |
| Aug 10, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 10:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 11, 12:00 AM CDT | Severe Thunderstorm Warning | FSD | 45 min |
| Aug 14, 11:09 PM CDT | Severe Thunderstorm Warning | FSD | 51 min |
| Aug 29, 3:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 4, 4:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Sep 4, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 4, 6:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 4, 9:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Sep 4, 10:40 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 7, 2:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 1:27 AM CDT | Severe Thunderstorm Warning | FSD | 33 min |
| Oct 6, 2:43 PM CDT | Freeze Warning | FSD | 18 hr |
| Oct 11, 2:59 PM CDT | Freeze Watch | FSD | 13 hr |
| Oct 12, 3:39 AM CDT | Freeze Warning | FSD | 29 hr |
| Nov 16, 3:33 AM CST | Blizzard Watch | FSD | 24 hr |
| Nov 16, 3:33 AM CST | Winter Storm Watch | FSD | 24 hr |
| Nov 17, 3:34 AM CST | Winter Storm Warning | FSD | 38 hr |
| Nov 18, 2:42 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 6, 3:36 AM CST | Wind Advisory | FSD | 17 hr |
| Dec 9, 11:36 AM CST | Winter Weather Advisory | FSD | 43 hr |
| Dec 11, 8:30 PM CST | Wind Chill Advisory | FSD | 13 hr |
| Dec 12, 2:54 PM CST | Wind Chill Advisory | FSD | 18 hr |
| Dec 14, 3:35 AM CST | Winter Storm Watch | FSD | 32 hr |
| Dec 15, 4:22 AM CST | Winter Storm Warning | FSD | 56 hr |
| Dec 16, 4:02 AM CST | Wind Chill Warning | FSD | 56 hr |
| Dec 16, 10:07 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 20, 8:31 PM CST | Wind Advisory | FSD | 21 hr |
| Dec 24, 3:51 AM CST | Freezing Rain Advisory | FSD | 30 hr |
| Dec 25, 3:07 PM CST | Wind Advisory | FSD | 27 hr |
| Dec 25, 8:54 PM CST | High Wind Warning | FSD | 18 hr |
| Dec 25, 8:54 PM CST | Wind Advisory | FSD | 21 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 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.