Alert archive / South Dakota / Lyman County
Weather alerts in Lyman County, South Dakota, 2014
86 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lyman County and its neighbors
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Alerts
- 86
- Warnings
- 20
- Watches
- 10
- Advisories
- 42
- Busiest month
- June23 alerts
- Busiest day
- June 16, 20147 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lyman County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 7 | 36% | 5 | 80% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 15 | 8 | 47% | 15 | 73% | 12 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 141 | 78 | 45% | 133 | 75% | 19 min |
| NWS Aberdeen, SD: flash flood warnings | 31 | 22 | 29% | 35 | 97% | 104 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, 2:03 PM CST | Wind Advisory | ABR | 14 hr |
| Jan 4, 4:12 AM CST | Wind Chill Warning | ABR | 72 hr |
| Jan 13, 3:36 AM CST | Wind Advisory | ABR | 31 hr |
| Jan 14, 2:58 PM CST | High Wind Watch | ABR | 13 hr |
| Jan 15, 3:52 AM CST | High Wind Warning | ABR | 38 hr |
| Jan 17, 10:27 AM CST | Wind Advisory | ABR | 25 hr |
| Jan 19, 12:30 PM CST | Wind Advisory | ABR | 3 hr |
| Jan 20, 3:59 AM CST | Wind Advisory | ABR | 5 hr |
| Jan 20, 9:07 AM CST | High Wind Warning | ABR | 6 hr |
| Jan 20, 2:39 PM CST | Wind Advisory | ABR | 3 hr |
| Jan 21, 6:12 PM CST | Wind Advisory | ABR | 116 min |
| Jan 24, 4:22 AM CST | Wind Advisory | ABR | 19 hr |
| Jan 25, 4:24 AM CST | High Wind Watch | ABR | 6 hr |
| Jan 25, 10:38 AM CST | High Wind Warning | ABR | 34 hr |
| Jan 26, 2:33 PM CST | Wind Chill Advisory | ABR | 45 hr |
| Feb 4, 2:50 PM CST | Wind Chill Advisory | ABR | 44 hr |
| Feb 6, 2:51 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 18, 3:47 AM CST | Wind Advisory | ABR | 14 hr |
| Feb 19, 3:44 PM CST | Wind Advisory | ABR | 26 hr |
| Feb 24, 10:44 AM CST | Winter Weather Advisory | ABR | 8 hr |
| Feb 28, 6:45 AM CST | Wind Advisory | ABR | 9 hr |
| Feb 28, 4:02 PM CST | Wind Chill Advisory | ABR | 44 hr |
| Feb 28, 4:02 PM CST | Winter Weather Advisory | ABR | 29 hr |
| Mar 2, 3:44 PM CST | Wind Chill Advisory | ABR | 18 hr |
| Mar 12, 1:28 PM CDT | River Flood Warning | UNR | 32 hr |
| Mar 17, 2:56 PM CDT | Winter Weather Advisory | ABR | 17 hr |
| Mar 29, 4:26 AM CDT | Blizzard Watch | ABR | 48 hr |
| Mar 29, 4:26 AM CDT | Winter Storm Watch | ABR | 24 hr |
| Mar 30, 12:01 PM CDT | Blizzard Warning | ABR | 42 hr |
| Apr 18, 3:56 AM CDT | Wind Advisory | ABR | 27 hr |
| Apr 23, 4:12 AM CDT | Wind Advisory | ABR | 15 hr |
| Apr 26, 10:35 AM CDT | Wind Advisory | ABR | 32 hr |
| Apr 28, 8:20 PM CDT | Areal Flood Warning | ABR | 24 hr |
| May 11, 3:12 PM CDT | Wind Advisory | ABR | 28 hr |
| May 13, 3:00 PM CDT | Frost Advisory | ABR | 17 hr |
| May 14, 3:18 PM CDT | Freeze Warning | ABR | 17 hr |
| May 27, 2:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 31, 1:50 PM CDT | Flash Flood Watch | ABR | 31 hr |
| Jun 3, 9:36 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 9:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 13, 3:56 AM CDT | Wind Advisory | ABR | 12 hr |
| Jun 14, 7:14 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 11:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 14, 11:57 AM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 14, 12:42 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 14, 1:02 PM CDT | Severe Thunderstorm Warning | ABR | 43 min |
| Jun 16, 7:03 AM CDT | Severe Thunderstorm Warning | ABR | 42 min |
| Jun 16, 7:33 AM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 16, 7:37 AM CDT | Severe Thunderstorm Warning | ABR | 53 min |
| Jun 16, 8:04 AM CDT | Severe Thunderstorm Warning | ABR | 41 min |
| Jun 16, 8:45 AM CDT | Severe Thunderstorm Warning | ABR | 45 min |
| Jun 16, 10:08 AM CDT | Severe Thunderstorm Warning | ABR | 52 min |
| Jun 16, 10:27 AM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 18, 1:28 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 21, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 5:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 21, 8:10 PM CDT | Severe Thunderstorm Warning | ABR | 25 min |
| Jun 21, 8:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 26, 7:44 PM CDT | Flash Flood Watch | ABR | 31 hr |
| Jun 27, 4:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 30, 3:33 AM CDT | Wind Advisory | ABR | 16 hr |
| Jul 10, 6:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 20, 4:09 AM CDT | Heat Advisory | ABR | 41 hr |
| Aug 1, 5:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 16, 5:02 AM CDT | Dense Fog Advisory | ABR | 4 hr |
| Aug 22, 11:03 PM CDT | Flood Watch | ABR | 22 hr |
| Aug 23, 3:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 1, 2:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Sep 7, 8:08 PM CDT | Severe Thunderstorm Warning | ABR | 22 min |
| Sep 7, 10:13 PM CDT | Special Weather Statement | ABR | 32 min |
| Sep 24, 5:59 AM CDT | Dense Fog Advisory | ABR | 3 hr |
| Sep 30, 3:33 AM CDT | Wind Advisory | ABR | 15 hr |
| Oct 2, 3:26 PM CDT | Wind Advisory | ABR | 27 hr |
| Oct 3, 4:41 AM CDT | Freeze Warning | ABR | 28 hr |
| Nov 4, 3:23 PM CST | Wind Advisory | ABR | 26 hr |
| Nov 7, 3:53 AM CST | Wind Advisory | ABR | 20 hr |
| Nov 9, 4:07 AM CST | Winter Weather Advisory | ABR | 41 hr |
| Nov 14, 3:50 AM CST | Winter Weather Advisory | ABR | 36 hr |
| Nov 15, 3:25 PM CST | Winter Weather Advisory | ABR | 30 hr |
| Nov 22, 3:39 PM CST | Wind Advisory | ABR | 44 hr |
| Dec 14, 2:58 PM CST | Winter Weather Advisory | ABR | 33 hr |
| Dec 22, 2:47 AM CST | Winter Weather Advisory | ABR | 36 hr |
| Dec 24, 2:35 PM CST | Winter Weather Advisory | ABR | 34 hr |
| Dec 29, 3:20 AM CST | Wind Chill Advisory | ABR | 33 hr |
| Dec 30, 3:01 PM CST | Wind Chill Advisory | ABR | 18 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 | 11 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 1 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 22 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
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.