Alert archive / South Dakota / Hand County
Weather alerts in Hand County, South Dakota, 2019
146 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hand County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 146
- Warnings
- 43
- Watches
- 26
- Advisories
- 44
- Busiest month
- July33 alerts
- Busiest day
- August 17, 20197 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 1 tornado warnings covering Hand County in 2019 had a tornado report inside them.
Hand County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 21 | 14 | 33% | 11 | 100% | 10 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 5 | 2 | 60% | 8 | 38% | 10 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 199 | 126 | 37% | 198 | 86% | 18 min |
| NWS Aberdeen, SD: flash flood warnings | 3 | 1 | 67% | 2 | 100% | 8 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 5, 10:31 PM CST | Dense Fog Advisory | ABR | 10 hr |
| Jan 7, 2:53 PM CST | Wind Advisory | ABR | 27 hr |
| Jan 13, 9:18 PM CST | Dense Fog Advisory | ABR | 15 hr |
| Jan 14, 9:54 PM CST | Dense Fog Advisory | ABR | 15 hr |
| Jan 16, 3:48 PM CST | Winter Storm Watch | ABR | 23 hr |
| Jan 17, 2:21 PM CST | Winter Storm Warning | ABR | 28 hr |
| Jan 18, 3:59 PM CST | Wind Chill Advisory | ABR | 17 hr |
| Jan 21, 7:45 PM CST | Winter Weather Advisory | ABR | 8 hr |
| Jan 22, 3:29 AM CST | Winter Storm Watch | ABR | 23 hr |
| Jan 23, 2:42 AM CST | Winter Weather Advisory | ABR | 27 hr |
| Jan 24, 3:43 AM CST | Wind Chill Advisory | ABR | 27 hr |
| Jan 25, 2:47 PM CST | High Wind Watch | ABR | 37 hr |
| Jan 27, 3:24 AM CST | High Wind Warning | ABR | 24 hr |
| Jan 27, 6:09 AM CST | Wind Chill Watch | ABR | 21 hr |
| Jan 28, 3:09 AM CST | Wind Advisory | ABR | 7 hr |
| Jan 28, 3:13 AM CST | Wind Chill Warning | ABR | 3 days |
| Jan 30, 3:33 AM CST | Wind Chill Advisory | ABR | 32 hr |
| Feb 3, 3:36 AM CST | Wind Chill Advisory | ABR | 53 hr |
| Feb 5, 2:49 PM CST | Winter Weather Advisory | ABR | 51 hr |
| Feb 7, 3:36 AM CST | Wind Chill Warning | ABR | 32 hr |
| Feb 7, 3:36 AM CST | Wind Chill Advisory | ABR | 56 hr |
| Feb 11, 4:58 PM CST | Winter Weather Advisory | ABR | 7 hr |
| Feb 14, 3:08 AM CST | Wind Chill Advisory | ABR | 30 hr |
| Feb 14, 8:24 AM CST | Winter Weather Advisory | ABR | 10 hr |
| Feb 15, 2:27 PM CST | Winter Storm Watch | ABR | 12 hr |
| Feb 16, 2:47 AM CST | Winter Storm Warning | ABR | 39 hr |
| Feb 19, 3:07 AM CST | Dense Fog Advisory | ABR | 6 hr |
| Feb 22, 2:00 AM CST | Winter Weather Advisory | ABR | 25 hr |
| Feb 23, 2:30 AM CST | Winter Weather Advisory | ABR | 40 hr |
| Feb 24, 2:57 PM CST | Wind Chill Advisory | ABR | 16 hr |
| Mar 2, 3:54 AM CST | Wind Chill Warning | ABR | 32 hr |
| Mar 2, 3:54 AM CST | Wind Chill Advisory | ABR | 56 hr |
| Mar 3, 2:00 PM CST | Winter Weather Advisory | ABR | 31 hr |
| Mar 7, 3:51 AM CST | Winter Storm Watch | ABR | 23 hr |
| Mar 8, 2:51 AM CST | Winter Storm Warning | ABR | 48 hr |
| Mar 8, 11:43 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 9, 9:45 PM CST | Winter Weather Advisory | ABR | 8 hr |
| Mar 11, 2:48 PM CDT | Winter Storm Watch | ABR | 37 hr |
| Mar 12, 3:01 PM CDT | Blizzard Warning | ABR | 52 hr |
| Mar 12, 3:01 PM CDT | Winter Storm Warning | ABR | 29 hr |
| Mar 13, 3:18 AM CDT | Flood Watch | ABR | 24 hr |
| Mar 13, 6:26 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 1:32 PM CDT | Winter Weather Advisory | ABR | 11 hr |
| Mar 22, 5:42 AM CDT | Dense Fog Advisory | ABR | 5 hr |
| Mar 27, 9:02 PM CDT | Areal Flood Warning | ABR | 24 hr |
| Mar 28, 8:56 PM CDT | Areal Flood Warning | ABR | 24 hr |
| Apr 5, 9:42 PM CDT | Dense Fog Advisory | ABR | 18 hr |
| Apr 8, 4:50 AM CDT | Winter Storm Watch | ABR | 34 hr |
| Apr 9, 3:42 AM CDT | Blizzard Warning | ABR | 3 days |
| Apr 11, 2:34 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 11, 9:38 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 11, 3:48 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 12, 3:22 AM CDT | Winter Weather Advisory | ABR | 10 hr |
| Apr 26, 3:17 PM CDT | Winter Weather Advisory | ABR | 19 hr |
| Apr 27, 5:14 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| May 19, 3:23 AM CDT | Frost Advisory | ABR | 28 hr |
| May 20, 3:17 PM CDT | Wind Advisory | ABR | 34 hr |
| May 22, 8:34 AM CDT | Areal Flood Warning | ABR | 6 hr |
| May 22, 2:08 PM CDT | Areal Flood Warning | ABR | 22 hr |
| May 31, 3:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 4, 3:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 4, 3:40 PM CDT | Severe Thunderstorm Warning | ABR | 50 min |
| Jun 4, 4:11 PM CDT | Severe Thunderstorm Warning | ABR | 49 min |
| Jun 4, 4:26 PM CDT | Severe Thunderstorm Warning | ABR | 49 min |
| Jun 14, 9:16 PM CDT | Severe Thunderstorm Warning | ABR | 59 min |
| Jun 14, 10:23 PM CDT | Special Weather Statement | ABR | 67 min |
| Jun 21, 2:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 27, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 2:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 3:06 PM CDT | Heat Advisory | ABR | 30 hr |
| Jun 30, 5:19 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 11:38 PM CDT | Special Weather Statement | ABR | 37 min |
| Jul 3, 5:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 7:09 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 10:12 PM CDT | Severe Thunderstorm Warning | ABR | 23 min |
| Jul 3, 10:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 4, 11:32 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 5, 1:43 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 6:19 AM CDT | Severe Thunderstorm Warning | ABR | 41 min |
| Jul 13, 7:03 AM CDT | Special Weather Statement | ABR | 42 min |
| Jul 13, 7:10 AM CDT | Severe Thunderstorm Warning | ABR | 33 min |
| Jul 13, 2:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 5:15 PM CDT | Severe Thunderstorm Warning | ABR | 45 min |
| Jul 13, 5:22 PM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jul 13, 7:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 14, 3:10 PM CDT | Heat Advisory | ABR | 30 hr |
| Jul 16, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 16, 8:28 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 16, 11:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 17, 12:29 AM CDT | Special Weather Statement | ABR | 46 min |
| Jul 17, 1:07 AM CDT | Severe Thunderstorm Warning | ABR | 23 min |
| Jul 17, 1:36 AM CDT | Severe Thunderstorm Warning | ABR | 39 min |
| Jul 17, 11:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 19, 3:54 AM CDT | Heat Advisory | ABR | 16 hr |
| Jul 19, 11:48 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 3:57 AM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jul 20, 4:02 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 20, 4:34 AM CDT | Severe Thunderstorm Warning | ABR | 56 min |
| Jul 20, 5:22 AM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jul 20, 6:29 AM CDT | Severe Thunderstorm Warning | ABR | 31 min |
| Jul 28, 3:09 AM CDT | Special Weather Statement | ABR | 51 min |
| Jul 28, 4:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 28, 5:55 PM CDT | Severe Thunderstorm Warning | ABR | 24 min |
| Jul 28, 6:55 PM CDT | Severe Thunderstorm Warning | ABR | 35 min |
| Aug 2, 9:50 AM CDT | Areal Flood Warning | ABR | 3 hr |
| Aug 2, 11:57 AM CDT | Areal Flood Warning | ABR | 6 hr |
| Aug 2, 5:59 PM CDT | Areal Flood Warning | ABR | 24 hr |
| Aug 6, 2:53 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 9, 12:26 PM CDT | Flood Watch | ABR | 9 hr |
| Aug 9, 2:09 PM CDT | Tornado Watch | SPC | 7 hr |
| Aug 9, 3:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 9, 6:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Aug 15, 1:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 15, 3:09 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 17, 12:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 17, 2:19 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 4:06 PM CDT | Severe Thunderstorm Warning | ABR | 19 min |
| Aug 17, 5:24 PM CDT | Severe Thunderstorm Warning | ABR | 36 min |
| Aug 17, 5:52 PM CDT | Tornado Warning | ABR | 23 min |
| Aug 17, 6:09 PM CDT | Severe Thunderstorm Warning | ABR | 15 min |
| Aug 17, 6:56 PM CDT | Severe Thunderstorm Warning | ABR | 19 min |
| Aug 20, 4:29 AM CDT | Dense Fog Advisory | ABR | 3 hr |
| Aug 25, 3:18 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 1, 11:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Sep 11, 12:17 PM CDT | Flash Flood Watch | ABR | 18 hr |
| Sep 11, 8:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 20, 10:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 21, 1:22 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 3, 2:33 PM CDT | Frost Advisory | ABR | 14 hr |
| Oct 4, 2:29 PM CDT | Wind Advisory | ABR | 28 hr |
| Oct 8, 3:38 AM CDT | Winter Storm Watch | ABR | 48 hr |
| Oct 10, 3:43 AM CDT | Winter Weather Advisory | ABR | 67 hr |
| Oct 21, 3:50 AM CDT | Wind Advisory | ABR | 36 hr |
| Nov 25, 1:44 PM CST | Winter Weather Advisory | ABR | 37 hr |
| Nov 27, 3:02 AM CST | Winter Weather Advisory | ABR | 63 hr |
| Nov 27, 1:15 PM CST | Winter Storm Watch | ABR | 39 hr |
| Nov 28, 2:24 PM CST | Winter Storm Warning | ABR | 70 hr |
| Nov 30, 2:48 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 13, 9:06 AM CST | Dense Fog Advisory | ABR | 7 hr |
| Dec 24, 2:54 PM CST | Dense Fog Advisory | ABR | 33 hr |
| Dec 25, 4:15 AM CST | Winter Weather Advisory | ABR | 22 hr |
| Dec 26, 3:14 PM CST | Winter Storm Watch | ABR | 23 hr |
| Dec 27, 2:38 PM CST | Winter Storm Warning | ABR | 63 hr |
| Dec 29, 11:55 AM CST | Blizzard Warning | ABR | 12 hr |
| Dec 29, 11:55 AM CST | Winter Storm Warning | ABR | 18 hr |
| Dec 30, 3:10 AM CST | Winter Weather Advisory | ABR | 11 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 | 21 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 5 |
| Flooding | |
| Areal Flood Warning | 7 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 17 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Wind Chill Warning | 3 |
| Wind Chill Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 8 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.