Alert archive / South Dakota / Hamlin County
Weather alerts in Hamlin County, South Dakota, 2008
123 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 123
- Warnings
- 26
- Watches
- 20
- Advisories
- 44
- Busiest month
- July19 alerts
- Busiest day
- June 11, 20086 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hamlin County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 7 | 22% | 6 | 67% | 10 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 Aberdeen, SD: tornado warnings | 29 | 7 | 76% | 14 | 71% | 14 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 259 | 122 | 53% | 247 | 79% | 22 min |
| NWS Aberdeen, SD: flash flood warnings | 9 | 4 | 56% | 6 | 67% | 41 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 2, 10:54 PM CST | Wind Advisory | ABR | 7 hr |
| Jan 10, 3:50 AM CST | Dense Fog Advisory | ABR | 8 hr |
| Jan 14, 4:11 AM CST | Wind Chill Advisory | ABR | 6 hr |
| Jan 17, 3:56 AM CST | Winter Weather Advisory | ABR | 24 hr |
| Jan 17, 3:39 PM CST | Wind Chill Advisory | ABR | 45 hr |
| Jan 21, 2:33 PM CST | Wind Chill Advisory | ABR | 20 hr |
| Jan 22, 3:35 PM CST | Wind Chill Advisory | ABR | 26 hr |
| Jan 28, 3:45 AM CST | Winter Weather Advisory | ABR | 24 hr |
| Jan 28, 3:26 PM CST | Wind Chill Advisory | ABR | 45 hr |
| Feb 3, 3:49 PM CST | Snow Advisory | ABR | 19 hr |
| Feb 4, 10:24 AM CST | Winter Weather Advisory | ABR | 5 hr |
| Feb 8, 3:43 PM CST | Wind Chill Advisory | ABR | 47 hr |
| Feb 9, 2:23 PM CST | Wind Chill Warning | ABR | 22 hr |
| Feb 10, 2:51 PM CST | Winter Weather Advisory | ABR | 20 hr |
| Feb 11, 10:56 AM CST | Wind Chill Advisory | ABR | 4 hr |
| Feb 13, 3:33 PM CST | Wind Chill Advisory | ABR | 24 hr |
| Feb 17, 2:17 PM CST | Wind Advisory | ABR | 5 hr |
| Feb 17, 2:23 PM CST | Wind Chill Advisory | ABR | 25 hr |
| Feb 19, 3:33 AM CST | Wind Chill Advisory | ABR | 24 hr |
| Feb 19, 7:09 PM CST | Wind Chill Warning | ABR | 9 hr |
| Feb 24, 4:08 AM CST | Dense Fog Advisory | ABR | 6 hr |
| Mar 2, 3:30 AM CST | Wind Advisory | ABR | 18 hr |
| Mar 19, 3:42 PM CDT | Winter Storm Watch | ABR | 13 hr |
| Mar 20, 4:15 AM CDT | Snow Advisory | ABR | 17 hr |
| Mar 20, 4:15 AM CDT | Winter Storm Warning | ABR | 27 hr |
| Mar 25, 3:39 PM CDT | Winter Storm Watch | ABR | 45 hr |
| Mar 26, 12:12 PM CDT | Heavy Snow Warning | ABR | 20 hr |
| Mar 29, 4:14 AM CDT | Wind Advisory | ABR | 16 hr |
| Mar 29, 3:41 PM CDT | Winter Storm Watch | ABR | 23 hr |
| Mar 30, 2:55 PM CDT | Heavy Snow Warning | ABR | 24 hr |
| Mar 31, 2:30 AM CDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 5, 11:44 PM CDT | Winter Weather Advisory | ABR | 21 hr |
| Apr 6, 6:35 AM CDT | Winter Storm Warning | ABR | 17 hr |
| Apr 8, 3:42 PM CDT | Winter Storm Watch | ABR | 36 hr |
| Apr 9, 7:45 PM CDT | Winter Storm Warning | ABR | 8 hr |
| Apr 10, 3:49 AM CDT | Blizzard Warning | ABR | 35 hr |
| Apr 10, 7:49 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 14, 3:48 PM CDT | Wind Advisory | ABR | 29 hr |
| Apr 25, 3:53 AM CDT | Snow Advisory | ABR | 4 hr |
| Apr 25, 6:06 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 25, 7:56 AM CDT | Winter Weather Advisory | ABR | 12 hr |
| Apr 25, 12:24 PM CDT | Winter Storm Warning | ABR | 18 hr |
| May 1, 4:34 PM CDT | Tornado Watch | SPC | 5 hr |
| May 2, 4:23 AM CDT | Wind Advisory | ABR | 19 hr |
| May 19, 11:44 AM CDT | Wind Advisory | ABR | 9 hr |
| May 24, 6:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 24, 9:01 PM CDT | Mesoscale Discussion | SPC | 59 min |
| May 29, 11:55 PM CDT | Dense Fog Advisory | ABR | 8 hr |
| Jun 5, 10:11 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 5, 11:14 AM CDT | Flash Flood Watch | ABR | 11 hr |
| Jun 5, 5:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 10, 10:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 11, 12:39 AM CDT | Mesoscale Discussion | SPC | 36 min |
| Jun 11, 12:55 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 11, 3:19 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 11, 6:23 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 1:11 PM CDT | Flash Flood Watch | ABR | 8 hr |
| Jun 12, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 12, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 4:00 PM CDT | Severe Thunderstorm Warning | ABR | 30 min |
| Jun 12, 4:31 PM CDT | Severe Thunderstorm Warning | ABR | 44 min |
| Jun 12, 7:50 PM CDT | Severe Thunderstorm Warning | ABR | 25 min |
| Jun 12, 8:11 PM CDT | Severe Thunderstorm Warning | ABR | 19 min |
| Jun 21, 3:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 27, 4:36 PM CDT | Severe Thunderstorm Warning | ABR | 24 min |
| Jun 28, 4:13 AM CDT | Wind Advisory | ABR | 16 hr |
| Jul 10, 7:58 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 10, 7:36 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 10, 9:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 11, 4:32 AM CDT | Wind Advisory | ABR | 16 hr |
| Jul 12, 4:50 AM CDT | Wind Advisory | ABR | 14 hr |
| Jul 16, 11:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 26, 11:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 27, 2:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 27, 3:14 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 27, 6:24 AM CDT | Severe Thunderstorm Warning | ABR | 66 min |
| Jul 27, 7:15 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 28, 8:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 28, 10:15 PM CDT | Tornado Watch | SPC | 4 hr |
| Jul 31, 12:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 31, 1:23 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 31, 3:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 31, 4:52 AM CDT | Severe Thunderstorm Warning | ABR | 53 min |
| Jul 31, 5:21 AM CDT | Severe Thunderstorm Warning | ABR | 39 min |
| Jul 31, 5:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 4, 3:56 AM CDT | Dense Fog Advisory | ABR | 5 hr |
| Aug 10, 4:23 AM CDT | Areal Flood Advisory | ABR | 5 hr |
| Aug 11, 4:30 AM CDT | Flash Flood Watch | ABR | 19 hr |
| Aug 14, 4:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 27, 4:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 31, 3:36 AM CDT | Wind Advisory | ABR | 17 hr |
| Sep 1, 10:02 AM CDT | Wind Advisory | ABR | 9 hr |
| Sep 12, 5:48 AM CDT | Dense Fog Advisory | ABR | 5 hr |
| Sep 24, 11:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Sep 28, 3:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 28, 4:58 PM CDT | Severe Thunderstorm Warning | ABR | 20 min |
| Oct 1, 3:17 PM CDT | Frost Advisory | ABR | 18 hr |
| Oct 8, 7:46 PM CDT | Freeze Warning | ABR | 9 hr |
| Oct 13, 3:03 PM CDT | Freeze Warning | ABR | 18 hr |
| Oct 25, 11:48 AM CDT | High Wind Watch | ABR | 16 hr |
| Oct 26, 3:51 AM CDT | High Wind Warning | ABR | 15 hr |
| Nov 4, 4:04 PM CST | Winter Storm Watch | ABR | 37 hr |
| Nov 5, 2:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Nov 6, 4:48 AM CST | Winter Weather Advisory | ABR | 31 hr |
| Nov 6, 6:35 PM CST | Winter Storm Warning | ABR | 9 hr |
| Nov 10, 3:00 PM CST | Winter Weather Advisory | ABR | 24 hr |
| Nov 11, 6:51 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 2, 9:32 AM CST | Winter Weather Advisory | ABR | 14 hr |
| Dec 8, 4:10 AM CST | Winter Weather Advisory | ABR | 17 hr |
| Dec 8, 6:22 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 12, 3:49 AM CST | Blizzard Watch | ABR | 24 hr |
| Dec 13, 3:36 AM CST | Blizzard Warning | ABR | 47 hr |
| Dec 14, 12:07 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 14, 5:25 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 14, 12:02 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 14, 3:33 PM CST | Wind Chill Warning | ABR | 23 hr |
| Dec 18, 4:28 AM CST | Winter Storm Watch | ABR | 10 hr |
| Dec 18, 2:22 PM CST | Blizzard Watch | ABR | 14 hr |
| Dec 19, 4:49 AM CST | Blizzard Warning | ABR | 34 hr |
| Dec 19, 11:21 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 20, 11:50 AM CST | Wind Chill Warning | ABR | 28 hr |
| Dec 26, 9:03 AM CST | Dense Fog Advisory | ABR | 12 hr |
| Dec 29, 3:14 AM CST | Winter Weather Advisory | ABR | 36 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 | 9 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 33 |
| Flooding | |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 3 |
| Heavy Snow Warning | 2 |
| Winter Storm Warning | 5 |
| Blizzard Watch | 2 |
| Winter Storm Watch | 6 |
| Snow Advisory | 3 |
| Winter Weather Advisory | 11 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 4 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 10 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.