Alert archive / South Dakota / Hamlin County
Weather alerts in Hamlin County, South Dakota, 2023
94 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 94
- Warnings
- 18
- Watches
- 8
- Advisories
- 51
- Busiest month
- January18 alerts
- Busiest day
- July 26, 20235 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 Hamlin County in 2023 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 21 minutes after it went out.
Hamlin County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 1 | 100% | 21 min |
| Severe thunderstorm warnings | 5 | 4 | 20% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 6 | 3 | 50% | 7 | 57% | 18 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 126 | 71 | 44% | 157 | 73% | 23 min |
| NWS Aberdeen, SD: flash flood warnings | 1 | 0 | 100% | 0 |
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, 1:58 PM CST | Winter Storm Warning | ABR | 59 hr |
| Jan 1, 1:58 PM CST | Winter Weather Advisory | ABR | 64 hr |
| Jan 2, 3:16 PM CST | Winter Storm Warning | ABR | 34 hr |
| Jan 3, 6:09 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 6, 3:43 AM CST | Dense Fog Advisory | ABR | 32 hr |
| Jan 8, 9:02 AM CST | Dense Fog Advisory | ABR | 3 hr |
| Jan 9, 3:08 AM CST | Dense Fog Advisory | ABR | 7 hr |
| Jan 10, 12:59 AM CST | Dense Fog Advisory | ABR | 35 hr |
| Jan 12, 6:01 PM CST | Dense Fog Advisory | ABR | 15 hr |
| Jan 15, 2:24 PM CST | Winter Weather Advisory | ABR | 36 hr |
| Jan 18, 5:27 PM CST | Dense Fog Advisory | ABR | 13 hr |
| Jan 20, 7:06 PM CST | Dense Fog Advisory | ABR | 15 hr |
| Jan 21, 10:05 AM CST | Dense Fog Advisory | ABR | 115 min |
| Jan 21, 2:08 PM CST | Dense Fog Advisory | ABR | 22 hr |
| Jan 24, 2:05 AM CST | Dense Fog Advisory | ABR | 6 hr |
| Jan 26, 2:52 AM CST | Winter Weather Advisory | ABR | 31 hr |
| Jan 28, 1:53 PM CST | Wind Chill Advisory | ABR | 22 hr |
| Jan 29, 2:03 PM CST | Wind Chill Advisory | ABR | 44 hr |
| Feb 1, 2:07 PM CST | Wind Chill Advisory | ABR | 46 hr |
| Feb 2, 3:03 PM CST | Wind Chill Advisory | ABR | 21 hr |
| Feb 5, 2:02 PM CST | Wind Advisory | ABR | 22 hr |
| Feb 5, 6:26 PM CST | Dense Fog Advisory | ABR | 5 hr |
| Feb 9, 2:22 AM CST | Wind Advisory | ABR | 13 hr |
| Feb 13, 2:36 AM CST | Winter Storm Watch | ABR | 24 hr |
| Feb 14, 3:00 AM CST | Blizzard Warning | ABR | 31 hr |
| Feb 14, 8:11 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 19, 2:06 PM CST | Winter Storm Watch | ABR | 37 hr |
| Feb 20, 2:45 PM CST | Winter Weather Advisory | ABR | 39 hr |
| Feb 21, 2:41 AM CST | Blizzard Warning | ABR | 57 hr |
| Feb 22, 11:45 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 23, 2:39 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 27, 2:24 AM CST | Dense Fog Advisory | ABR | 10 hr |
| Feb 27, 1:52 PM CST | Winter Weather Advisory | ABR | 49 hr |
| Mar 5, 2:49 AM CST | Winter Weather Advisory | ABR | 29 hr |
| Mar 8, 2:59 AM CST | Winter Weather Advisory | ABR | 45 hr |
| Mar 10, 2:50 AM CST | Winter Weather Advisory | ABR | 34 hr |
| Mar 14, 11:45 AM CDT | Winter Weather Advisory | ABR | 4 hr |
| Mar 15, 2:01 PM CDT | Winter Weather Advisory | ABR | 29 hr |
| Mar 29, 2:22 PM CDT | Winter Storm Watch | ABR | 24 hr |
| Mar 30, 2:43 PM CDT | Blizzard Warning | ABR | 36 hr |
| Mar 30, 2:43 PM CDT | Ice Storm Warning | ABR | 25 hr |
| Mar 31, 9:06 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 2:29 AM CDT | Winter Storm Watch | ABR | 35 hr |
| Apr 3, 1:47 PM CDT | Winter Weather Advisory | ABR | 65 hr |
| Apr 10, 2:49 AM CDT | River Flood Warning | ABR | 25 days |
| Apr 11, 3:15 AM CDT | River Flood Warning | FSD | 14 days |
| Apr 15, 2:58 PM CDT | Wind Advisory | ABR | 28 hr |
| Apr 30, 2:38 AM CDT | Wind Advisory | ABR | 17 hr |
| Jun 7, 5:06 PM CDT | Special Weather Statement | ABR | 24 min |
| Jun 7, 5:26 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 4, 1:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 4, 5:55 AM CDT | Special Weather Statement | ABR | 50 min |
| Jul 13, 4:02 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 13, 4:05 PM CDT | Severe Thunderstorm Warning | ABR | 40 min |
| Jul 13, 4:25 PM CDT | Severe Thunderstorm Warning | ABR | 16 min |
| Jul 13, 4:27 PM CDT | Severe Thunderstorm Warning | ABR | 18 min |
| Jul 25, 6:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 25, 7:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 9:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 25, 11:58 PM CDT | Special Weather Statement | ABR | 47 min |
| Jul 26, 12:17 AM CDT | Severe Thunderstorm Warning | ABR | 47 min |
| Jul 26, 1:06 AM CDT | Special Weather Statement | ABR | 24 min |
| Jul 27, 4:04 AM CDT | Heat Advisory | ABR | 16 hr |
| Aug 10, 3:50 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 10, 4:56 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 6:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 7:10 PM CDT | Severe Thunderstorm Warning | ABR | 50 min |
| Aug 10, 7:33 PM CDT | Tornado Warning | ABR | 27 min |
| Aug 10, 7:56 PM CDT | Special Weather Statement | ABR | 34 min |
| Aug 10, 7:59 PM CDT | Tornado Warning | ABR | 31 min |
| Aug 20, 1:52 PM CDT | Heat Advisory | ABR | 30 hr |
| Aug 21, 2:21 PM CDT | Heat Advisory | ABR | 30 hr |
| Aug 22, 10:05 AM CDT | Excessive Heat Warning | ABR | 10 hr |
| Aug 22, 8:20 PM CDT | Heat Advisory | ABR | 24 hr |
| Aug 24, 2:19 AM CDT | Dense Fog Advisory | ABR | 8 hr |
| Sep 3, 3:53 AM CDT | Heat Advisory | ABR | 15 hr |
| Sep 23, 2:10 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 26, 5:50 AM CDT | Dense Fog Advisory | ABR | 4 hr |
| Sep 30, 4:19 AM CDT | Dense Fog Advisory | ABR | 8 hr |
| Oct 5, 1:38 AM CDT | Freeze Watch | ABR | 24 hr |
| Oct 5, 8:49 PM CDT | Wind Advisory | ABR | 13 hr |
| Oct 6, 2:01 AM CDT | Freeze Warning | ABR | 31 hr |
| Oct 11, 2:54 PM CDT | Wind Advisory | ABR | 48 hr |
| Oct 30, 2:43 AM CDT | Wind Advisory | ABR | 21 hr |
| Oct 31, 12:03 AM CDT | Wind Advisory | ABR | 4 hr |
| Nov 25, 1:39 PM CST | Wind Advisory | ABR | 24 hr |
| Dec 3, 6:58 PM CST | Dense Fog Advisory | ABR | 10 hr |
| Dec 7, 3:01 AM CST | Wind Advisory | ABR | 60 hr |
| Dec 21, 10:42 PM CST | Dense Fog Advisory | ABR | 13 hr |
| Dec 22, 12:01 PM CST | Dense Fog Advisory | ABR | 3 hr |
| Dec 22, 3:09 PM CST | Dense Fog Advisory | ABR | 22 hr |
| Dec 24, 2:12 PM CST | Winter Weather Advisory | ABR | 34 hr |
| Dec 25, 2:22 AM CST | Ice Storm Warning | ABR | 49 hr |
| Dec 25, 7:00 AM CST | Mesoscale Discussion | SPC | 6 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 | 5 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 5 |
| Flooding | |
| River Flood Warning | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Ice Storm Warning | 2 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 12 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 19 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.