Alert archive / South Dakota / Hamlin County
Weather alerts in Hamlin County, South Dakota, 2019
135 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hamlin County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 135
- Warnings
- 35
- Watches
- 17
- Advisories
- 55
- Busiest month
- January22 alerts
- Busiest day
- August 15, 20196 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 reports fell inside a warning.
Hamlin County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 7 | 7 | 0% | 3 | 100% | 11 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 1, 2:46 PM CST | Wind Chill Advisory | ABR | 14 hr |
| Jan 5, 10:31 PM CST | Dense Fog Advisory | ABR | 10 hr |
| Jan 6, 1:32 PM CST | Winter Weather Advisory | ABR | 19 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 Weather Advisory | ABR | 50 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 | Blizzard Warning | ABR | 27 hr |
| Jan 24, 3:43 AM CST | Wind Chill Advisory | ABR | 27 hr |
| Jan 24, 5:27 AM CST | Winter Weather Advisory | ABR | 4 hr |
| Jan 26, 3:55 AM CST | Winter Storm Watch | ABR | 23 hr |
| Jan 27, 3:21 AM CST | Blizzard Warning | ABR | 24 hr |
| Jan 27, 3:21 AM CST | Winter Weather Advisory | ABR | 17 hr |
| Jan 27, 6:09 AM CST | Wind Chill Watch | ABR | 21 hr |
| Jan 27, 1:44 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 27, 8:23 PM CST | Winter Weather Advisory | ABR | 16 hr |
| Jan 28, 3:13 AM CST | Wind Chill Warning | ABR | 3 days |
| Jan 28, 2:46 PM CST | Winter Weather Advisory | ABR | 27 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 6, 1:01 PM CST | Blizzard Warning | ABR | 35 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 12, 10:12 AM CST | Winter Weather Advisory | ABR | 8 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 16, 2:47 AM CST | Winter Weather Advisory | ABR | 39 hr |
| Feb 19, 3:07 AM CST | Dense Fog Advisory | ABR | 6 hr |
| Feb 19, 3:09 AM CST | Winter Weather Advisory | ABR | 39 hr |
| Feb 20, 2:28 AM CST | Winter Storm Warning | ABR | 16 hr |
| Feb 23, 2:30 AM CST | Winter Storm Watch | ABR | 12 hr |
| Feb 23, 2:28 PM CST | Blizzard Warning | ABR | 28 hr |
| Feb 24, 2:57 PM CST | Wind Chill Advisory | ABR | 16 hr |
| Feb 28, 9:36 PM CST | Winter Weather Advisory | ABR | 19 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 9, 5:05 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 9, 11:11 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 9, 9:45 PM CST | Winter Weather Advisory | ABR | 8 hr |
| Mar 9, 9:45 PM CST | Winter Weather Advisory | ABR | 4 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, 6:06 PM CDT | Dense Fog Advisory | ABR | 15 hr |
| Mar 13, 3:18 AM CDT | Flood Watch | ABR | 24 hr |
| Mar 13, 3:35 AM CDT | Winter Weather Advisory | ABR | 27 hr |
| Mar 14, 1:32 PM CDT | Winter Weather Advisory | ABR | 11 hr |
| Mar 16, 3:31 AM CDT | Dense Fog Advisory | ABR | 9 hr |
| Mar 22, 2:42 PM CDT | River Flood Warning | FSD | 88 days |
| Mar 22, 9:12 PM CDT | River Flood Warning | ABR | 54 days |
| Apr 4, 10:26 PM CDT | Dense Fog Advisory | ABR | 14 hr |
| Apr 6, 10:06 PM CDT | Dense Fog Advisory | ABR | 9 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 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 18, 9:40 AM CDT | River Flood Warning | ABR | 12 days |
| May 19, 3:23 AM CDT | Freeze Warning | ABR | 28 hr |
| May 20, 3:17 PM CDT | Wind Advisory | ABR | 34 hr |
| May 31, 3:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 11:05 PM CDT | Special Weather Statement | ABR | 25 min |
| May 31, 11:12 PM CDT | Severe Thunderstorm Warning | ABR | 33 min |
| Jun 4, 11:44 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 3:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 11, 2:45 PM CDT | Special Weather Statement | ABR | 15 min |
| Jun 15, 12:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 4:47 PM CDT | Special Weather Statement | ABR | 43 min |
| Jun 15, 4:57 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 16, 3:53 AM CDT | Dense Fog Advisory | ABR | 6 hr |
| Jun 23, 4:49 AM CDT | Dense Fog Advisory | ABR | 3 hr |
| Jun 24, 6:46 PM CDT | Special Weather Statement | ABR | 44 min |
| Jun 27, 4:01 AM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 27, 5:23 AM CDT | Special Weather Statement | ABR | 52 min |
| Jun 27, 10:22 AM CDT | River Flood Warning | FSD | 52 hr |
| Jun 28, 3:06 PM CDT | Heat Advisory | ABR | 30 hr |
| Jun 29, 5:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 1, 4:52 AM CDT | River Flood Warning | FSD | 37 days |
| Jul 12, 10:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 14, 3:10 PM CDT | Heat Advisory | ABR | 30 hr |
| Jul 15, 5:32 AM CDT | Areal Flood Warning | ABR | 3 hr |
| Jul 15, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 16, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 16, 11:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 19, 3:54 AM CDT | Heat Advisory | ABR | 16 hr |
| Jul 19, 7:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 5:02 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 20, 6:22 AM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jul 20, 6:44 AM CDT | Severe Thunderstorm Warning | ABR | 61 min |
| Aug 9, 12:26 PM CDT | Flood Watch | ABR | 9 hr |
| Aug 15, 1:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 15, 3:09 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 15, 5:24 PM CDT | Severe Thunderstorm Warning | ABR | 51 min |
| Aug 15, 5:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 15, 5:56 PM CDT | Severe Thunderstorm Warning | ABR | 49 min |
| Aug 15, 6:28 PM CDT | Severe Thunderstorm Warning | ABR | 47 min |
| Aug 17, 5:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 6:14 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 17, 8:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 18, 7:17 PM CDT | Areal Flood Warning | ABR | 48 hr |
| Aug 18, 9:09 PM CDT | River Flood Warning | ABR | 34 hr |
| Aug 20, 6:59 AM CDT | River Flood Warning | FSD | 37 hr |
| Sep 9, 6:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 11, 12:17 PM CDT | Flash Flood Watch | ABR | 18 hr |
| Sep 12, 3:08 PM CDT | River Flood Warning | FSD | 21 days |
| Sep 12, 5:34 PM CDT | River Flood Warning | ABR | 4 days |
| Sep 15, 4:02 AM CDT | Dense Fog Advisory | ABR | 6 hr |
| 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 10, 3:43 AM CDT | Winter Weather Advisory | ABR | 67 hr |
| Oct 21, 3:50 AM CDT | High Wind Warning | ABR | 22 hr |
| Oct 21, 3:50 AM CDT | Wind Advisory | ABR | 36 hr |
| Nov 12, 7:45 PM CST | River Flood Warning | FSD | 3 days |
| Nov 25, 4:04 AM CST | Winter Storm Watch | ABR | 10 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 |
| 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, 4:46 AM CST | Mesoscale Discussion | SPC | 4 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 | 7 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 5 |
| Flooding | |
| Areal Flood Warning | 2 |
| River Flood Warning | 10 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Winter | |
| Blizzard Warning | 6 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 26 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 3 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 8 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
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.