Alert archive / South Carolina / Berkeley County
Weather alerts in Berkeley County, South Carolina, 2011
312 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Berkeley County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 312
- Warnings
- 71
- Watches
- 24
- Advisories
- 108
- Busiest month
- August56 alerts
- Busiest day
- April 16, 201110 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 3 tornado warnings covering Berkeley County in 2011 had a tornado report inside them; 7 of 8 tornado reports fell inside a warning, on average 23 minutes after it went out.
Berkeley County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 8 | 88% | 23 min |
| Severe thunderstorm warnings | 54 | 40 | 26% | 38 | 89% | 33 min |
| Flash flood warnings | 4 | 1 | 75% | 1 | 100% | 16 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 9 | 2 | 78% | 10 | 90% | 21 min |
| NWS Charleston, SC: severe thunderstorm warnings | 299 | 217 | 27% | 591 | 89% | 26 min |
| NWS Charleston, SC: flash flood warnings | 10 | 4 | 60% | 22 | 86% | 47 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 6, 3:18 AM EST | Lake Wind Advisory | CHS | 67 hr |
| Jan 9, 1:18 AM EST | Lake Wind Advisory | CHS | 3 hr |
| Jan 9, 4:30 AM EST | Winter Storm Watch | CHS | 12 hr |
| Jan 9, 4:30 AM EST | Winter Weather Advisory | CHS | 55 hr |
| Jan 9, 4:01 PM EST | Winter Storm Warning | CHS | 30 hr |
| Jan 10, 3:06 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 10, 11:27 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 11, 4:03 PM EST | Lake Wind Advisory | CHS | 30 hr |
| Jan 25, 6:10 PM EST | Special Weather Statement | CHS | 80 min |
| Jan 25, 7:23 PM EST | Special Weather Statement | CHS | 82 min |
| Jan 25, 10:43 PM EST | Dense Fog Advisory | CHS | 9 hr |
| Jan 26, 3:31 AM EST | Lake Wind Advisory | CHS | 6 hr |
| Jan 26, 9:48 AM EST | Wind Advisory | CHS | 9 hr |
| Jan 26, 6:56 PM EST | Lake Wind Advisory | CHS | 3 hr |
| Feb 2, 4:41 AM EST | Lake Wind Advisory | CHS | 7 hr |
| Feb 7, 10:34 PM EST | Lake Wind Advisory | CHS | 11 hr |
| Feb 13, 3:39 PM EST | Lake Wind Advisory | CHS | 36 hr |
| Feb 15, 3:45 PM EST | Dense Smoke Advisory | CHS | 17 hr |
| Feb 17, 4:14 PM EST | Dense Smoke Advisory | CHS | 17 hr |
| Feb 17, 8:00 PM EST | Dense Fog Advisory | CHS | 13 hr |
| Feb 18, 4:53 PM EST | Dense Smoke Advisory | CHS | 16 hr |
| Feb 20, 3:35 PM EST | Fire Weather Watch | CHS | 13 hr |
| Feb 20, 3:47 PM EST | Lake Wind Advisory | CHS | 12 hr |
| Feb 21, 4:01 AM EST | Wind Advisory | CHS | 12 hr |
| Feb 21, 4:43 AM EST | Red Flag Warning | CHS | 14 hr |
| Feb 21, 3:53 PM EST | Lake Wind Advisory | CHS | 12 hr |
| Feb 24, 4:14 PM EST | Lake Wind Advisory | CHS | 15 hr |
| Feb 25, 7:01 AM EST | Wind Advisory | CHS | 9 hr |
| Feb 25, 3:35 PM EST | Lake Wind Advisory | CHS | 3 hr |
| Feb 26, 6:04 PM EST | Dense Fog Advisory | CHS | 16 hr |
| Feb 27, 2:59 PM EST | Dense Fog Advisory | CHS | 14 hr |
| Feb 27, 10:12 PM EST | Lake Wind Advisory | CHS | 38 hr |
| Mar 3, 10:46 AM EST | Lake Wind Advisory | CHS | 17 hr |
| Mar 5, 3:28 PM EST | Lake Wind Advisory | CHS | 29 hr |
| Mar 6, 2:52 PM EST | Special Weather Statement | CHS | 23 min |
| Mar 9, 3:32 AM EST | Lake Wind Advisory | CHS | 17 hr |
| Mar 10, 4:35 AM EST | Lake Wind Advisory | CHS | 35 hr |
| Mar 10, 1:59 PM EST | Special Weather Statement | CHS | 31 min |
| Mar 22, 2:44 PM EDT | Lake Wind Advisory | CHS | 52 hr |
| Mar 24, 1:49 AM EDT | Red Flag Warning | CHS | 19 hr |
| Mar 27, 9:20 AM EDT | Special Weather Statement | CHS | 40 min |
| Mar 27, 9:29 AM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Mar 27, 9:55 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 27, 10:09 AM EDT | Special Weather Statement | CHS | 66 min |
| Apr 1, 3:24 PM EDT | Lake Wind Advisory | CHS | 5 hr |
| Apr 1, 3:24 PM EDT | Lake Wind Advisory | CHS | 28 hr |
| Apr 3, 4:11 PM EDT | Lake Wind Advisory | CHS | 24 hr |
| Apr 4, 4:14 PM EDT | Wind Advisory | CHS | 18 hr |
| Apr 5, 2:41 AM EDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 2:55 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 5:08 AM EDT | Special Weather Statement | CHS | 37 min |
| Apr 5, 5:25 AM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Apr 5, 10:34 AM EDT | Lake Wind Advisory | CHS | 9 hr |
| Apr 9, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 9, 5:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Apr 9, 8:21 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 9, 10:35 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Apr 9, 10:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 9, 11:25 PM EDT | Severe Thunderstorm Warning | CHS | 52 min |
| Apr 11, 3:45 AM EDT | Dense Fog Advisory | CHS | 5 hr |
| Apr 12, 3:53 AM EDT | Lake Wind Advisory | CHS | 16 hr |
| Apr 15, 3:55 PM EDT | Wind Advisory | CHS | 28 hr |
| Apr 16, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 12:02 PM EDT | Tornado Watch | SPC | 11 hr |
| Apr 16, 12:35 PM EDT | High Wind Warning | CHS | 7 hr |
| Apr 16, 2:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 16, 4:22 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Apr 16, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 16, 4:53 PM EDT | Tornado Warning | CHS | 37 min |
| Apr 16, 5:28 PM EDT | Tornado Warning | CHS | 32 min |
| Apr 16, 5:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Apr 16, 5:53 PM EDT | Tornado Warning | CHS | 52 min |
| Apr 21, 4:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Apr 21, 4:52 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Apr 21, 5:12 PM EDT | Severe Thunderstorm Warning | CHS | 41 min |
| Apr 21, 5:18 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Apr 21, 5:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 21, 5:46 PM EDT | Severe Thunderstorm Warning | CHS | 32 min |
| Apr 22, 3:06 PM EDT | Areal Flood Advisory | CHS | 105 min |
| Apr 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 26, 3:30 PM EDT | Lake Wind Advisory | CHS | 48 hr |
| Apr 27, 12:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 28, 4:30 AM EDT | Tornado Watch | SPC | 10 hr |
| Apr 28, 8:05 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 28, 8:48 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 11:22 AM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 28, 2:30 PM EDT | Special Weather Statement | CHS | 30 min |
| May 5, 2:23 AM EDT | Lake Wind Advisory | CHS | 8 hr |
| May 6, 11:33 PM EDT | Dense Fog Advisory | CHS | 9 hr |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 10, 7:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| May 10, 8:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| May 10, 9:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 10, 9:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| May 10, 10:16 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| May 11, 1:35 AM EDT | Mesoscale Discussion | SPC | 25 min |
| May 11, 1:41 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 11, 2:31 AM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| May 11, 3:27 AM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| May 11, 3:34 AM EDT | Mesoscale Discussion | SPC | 56 min |
| May 13, 10:43 PM EDT | Special Weather Statement | CHS | 32 min |
| May 14, 4:41 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 14, 6:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| May 22, 6:53 AM EDT | Dense Fog Advisory | CHS | 2 hr |
| May 27, 12:28 PM EDT | Special Weather Statement | CHS | 47 min |
| May 27, 12:51 PM EDT | Severe Thunderstorm Warning | CHS | 24 min |
| May 27, 6:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 28, 2:58 AM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| May 28, 2:25 PM EDT | Special Weather Statement | CHS | 35 min |
| Jun 3, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 11:28 PM EDT | Special Weather Statement | CHS | 47 min |
| Jun 12, 10:45 PM EDT | Special Weather Statement | CHS | 45 min |
| Jun 12, 11:44 PM EDT | Special Weather Statement | CHS | 31 min |
| Jun 14, 1:08 AM EDT | Special Weather Statement | CHS | 22 min |
| Jun 15, 9:27 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 15, 9:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jun 15, 11:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 16, 12:26 AM EDT | Severe Thunderstorm Warning | CHS | 44 min |
| Jun 18, 6:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 18, 7:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 18, 9:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 18, 10:17 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jun 19, 4:14 AM EDT | Heat Advisory | CHS | 16 hr |
| Jun 19, 2:22 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 19, 4:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 20, 3:45 AM EDT | Heat Advisory | CHS | 17 hr |
| Jun 20, 3:45 PM EDT | Heat Advisory | CHS | 27 hr |
| Jun 21, 3:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Jun 22, 3:46 AM EDT | Heat Advisory | CHS | 16 hr |
| Jun 23, 3:23 AM EDT | Heat Advisory | CHS | 15 hr |
| Jun 23, 1:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 23, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 3:46 PM EDT | Special Weather Statement | CHS | 29 min |
| Jun 23, 4:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Jun 23, 5:50 PM EDT | Severe Thunderstorm Warning | CHS | 40 min |
| Jun 23, 6:47 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Jun 24, 9:02 PM EDT | Severe Thunderstorm Warning | CHS | 43 min |
| Jun 24, 11:27 PM EDT | Areal Flood Advisory | CHS | 63 min |
| Jun 27, 1:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 28, 1:14 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jun 28, 1:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 30, 2:53 PM EDT | Areal Flood Advisory | CHS | 52 min |
| Jul 1, 2:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jul 1, 3:26 PM EDT | Severe Thunderstorm Warning | CHS | 32 min |
| Jul 1, 3:57 PM EDT | Special Weather Statement | CHS | 33 min |
| Jul 1, 4:36 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Jul 1, 4:55 PM EDT | Areal Flood Advisory | CHS | 92 min |
| Jul 2, 3:32 PM EDT | Special Weather Statement | CHS | 43 min |
| Jul 2, 3:56 PM EDT | Severe Thunderstorm Warning | CHS | 43 min |
| Jul 5, 4:44 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| Jul 5, 5:30 PM EDT | Special Weather Statement | CHS | 30 min |
| Jul 5, 5:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Jul 7, 2:24 PM EDT | Special Weather Statement | CHS | 21 min |
| Jul 7, 4:33 PM EDT | Special Weather Statement | CHS | 27 min |
| Jul 7, 5:09 PM EDT | Areal Flood Advisory | CHS | 77 min |
| Jul 8, 4:36 PM EDT | Special Weather Statement | CHS | 39 min |
| Jul 9, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 9, 1:23 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| Jul 9, 3:42 PM EDT | Special Weather Statement | CHS | 63 min |
| Jul 9, 4:24 PM EDT | Special Weather Statement | CHS | 51 min |
| Jul 9, 4:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jul 9, 4:54 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 9, 5:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jul 9, 6:01 PM EDT | Areal Flood Advisory | CHS | 59 min |
| Jul 11, 4:50 PM EDT | Heat Advisory | CHS | 27 hr |
| Jul 12, 3:33 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 13, 3:38 AM EDT | Excessive Heat Warning | CHS | 17 hr |
| Jul 13, 2:05 PM EDT | Special Weather Statement | CHS | 55 min |
| Jul 13, 2:08 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Jul 13, 3:17 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 13, 8:16 PM EDT | Special Weather Statement | CHS | 44 min |
| Jul 13, 8:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jul 13, 9:16 PM EDT | Severe Thunderstorm Warning | CHS | 35 min |
| Jul 14, 2:36 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Jul 14, 2:53 PM EDT | Flash Flood Warning | CHS | 61 min |
| Jul 21, 3:12 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 21, 3:59 PM EDT | Heat Advisory | CHS | 28 hr |
| Jul 22, 3:12 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 24, 3:29 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 24, 3:02 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 24, 4:19 PM EDT | Special Weather Statement | CHS | 41 min |
| Jul 24, 5:33 PM EDT | Special Weather Statement | CHS | 42 min |
| Jul 25, 1:01 PM EDT | Special Weather Statement | CHS | 29 min |
| Jul 26, 2:14 AM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jul 29, 3:25 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 29, 3:46 PM EDT | Heat Advisory | CHS | 28 hr |
| Jul 31, 3:29 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 31, 1:05 PM EDT | Excessive Heat Warning | CHS | 6 hr |
| Jul 31, 1:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 31, 3:42 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 31, 4:01 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Jul 31, 4:59 PM EDT | Areal Flood Advisory | CHS | 91 min |
| Aug 3, 3:34 AM EDT | Heat Advisory | CHS | 16 hr |
| Aug 3, 3:37 PM EDT | Excessive Heat Watch | CHS | 12 hr |
| Aug 3, 3:37 PM EDT | Heat Advisory | CHS | 28 hr |
| Aug 4, 12:20 PM EDT | Excessive Heat Warning | CHS | 8 hr |
| Aug 4, 3:20 PM EDT | Heat Advisory | CHS | 28 hr |
| Aug 4, 7:09 PM EDT | Special Weather Statement | CHS | 36 min |
| Aug 5, 3:41 PM EDT | Special Weather Statement | CHS | 34 min |
| Aug 5, 3:43 PM EDT | Heat Advisory | CHS | 27 hr |
| Aug 5, 4:08 PM EDT | Special Weather Statement | CHS | 37 min |
| Aug 6, 2:28 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 6, 3:31 PM EDT | Flash Flood Warning | CHS | 49 min |
| Aug 6, 4:00 PM EDT | Heat Advisory | CHS | 27 hr |
| Aug 7, 6:53 PM EDT | Heat Advisory | CHS | 25 hr |
| Aug 8, 3:25 PM EDT | Heat Advisory | CHS | 28 hr |
| Aug 9, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 9, 7:52 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Aug 9, 8:45 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Aug 10, 3:48 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Aug 12, 12:03 PM EDT | Areal Flood Advisory | CHS | 57 min |
| Aug 12, 12:53 PM EDT | Areal Flood Advisory | CHS | 82 min |
| Aug 12, 1:12 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Aug 12, 1:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 7:18 AM EDT | Areal Flood Advisory | CHS | 97 min |
| Aug 13, 3:54 PM EDT | Areal Flood Advisory | CHS | 49 min |
| Aug 13, 4:04 PM EDT | Special Weather Statement | CHS | 56 min |
| Aug 14, 2:24 PM EDT | Mesoscale Discussion | SPC | 36 min |
| Aug 14, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 4:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Aug 14, 5:27 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Aug 18, 2:38 PM EDT | Special Weather Statement | CHS | 52 min |
| Aug 20, 2:52 PM EDT | Special Weather Statement | CHS | 38 min |
| Aug 20, 3:29 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 20, 4:03 PM EDT | Special Weather Statement | CHS | 27 min |
| Aug 20, 4:25 PM EDT | Special Weather Statement | CHS | 35 min |
| Aug 20, 5:59 PM EDT | Severe Thunderstorm Warning | CHS | 26 min |
| Aug 20, 7:00 PM EDT | Tropical Storm Warning | NHC | 8 days |
| Aug 22, 2:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 22, 5:52 PM EDT | Special Weather Statement | CHS | 38 min |
| Aug 22, 7:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Aug 23, 5:27 PM EDT | Special Weather Statement | CHS | 48 min |
| Aug 23, 6:11 PM EDT | Special Weather Statement | CHS | 49 min |
| Aug 25, 5:00 AM EDT | Tropical Storm Watch | NHC | 54 hr |
| Aug 25, 5:12 AM EDT | Tropical Storm Watch | CHS | 12 hr |
| Aug 25, 5:04 PM EDT | Tropical Storm Warning | CHS | 42 hr |
| Aug 26, 2:56 PM EDT | Areal Flood Advisory | CHS | 94 min |
| Aug 26, 5:23 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Aug 27, 5:47 AM EDT | Lake Wind Advisory | CHS | 12 hr |
| Aug 29, 6:09 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| Aug 29, 11:08 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 29, 12:37 PM EDT | Heat Advisory | CHS | 3 hr |
| Aug 29, 2:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 3:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 29, 3:53 PM EDT | Special Weather Statement | CHS | 37 min |
| Aug 29, 3:56 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 29, 4:07 PM EDT | Severe Thunderstorm Warning | CHS | 33 min |
| Aug 29, 7:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Sep 5, 3:40 PM EDT | Lake Wind Advisory | CHS | 25 hr |
| Sep 5, 5:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 6, 9:17 AM EDT | Special Weather Statement | CHS | 58 min |
| Sep 6, 10:11 AM EDT | Tornado Watch | SPC | 7 hr |
| Sep 6, 10:28 AM EDT | Special Weather Statement | CHS | 47 min |
| Sep 6, 2:13 PM EDT | Special Weather Statement | CHS | 47 min |
| Sep 14, 4:13 PM EDT | Special Weather Statement | CHS | 32 min |
| Sep 15, 3:29 PM EDT | Lake Wind Advisory | CHS | 24 hr |
| Sep 20, 1:53 PM EDT | Areal Flood Advisory | CHS | 55 min |
| Sep 20, 2:58 PM EDT | Areal Flood Advisory | CHS | 32 min |
| Sep 24, 5:23 AM EDT | Special Weather Statement | CHS | 22 min |
| Sep 24, 5:49 PM EDT | Areal Flood Advisory | CHS | 56 min |
| Sep 25, 6:01 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| Sep 25, 4:48 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Sep 25, 6:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 26, 6:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 27, 6:24 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Sep 27, 6:46 PM EDT | Severe Thunderstorm Warning | CHS | 44 min |
| Sep 27, 7:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Sep 27, 7:47 PM EDT | Areal Flood Advisory | CHS | 59 min |
| Sep 27, 8:11 PM EDT | Special Weather Statement | CHS | 34 min |
| Sep 27, 8:31 PM EDT | Special Weather Statement | CHS | 29 min |
| Sep 27, 8:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Sep 28, 7:17 AM EDT | Special Weather Statement | CHS | 43 min |
| Sep 28, 3:27 PM EDT | Special Weather Statement | CHS | 48 min |
| Sep 28, 4:56 PM EDT | Special Weather Statement | CHS | 49 min |
| Sep 28, 6:22 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Sep 28, 7:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Sep 30, 3:58 AM EDT | Lake Wind Advisory | CHS | 31 hr |
| Sep 30, 5:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Oct 9, 4:21 AM EDT | Lake Wind Advisory | CHS | 43 hr |
| Oct 13, 9:15 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Oct 14, 4:06 AM EDT | Lake Wind Advisory | CHS | 13 hr |
| Oct 18, 5:42 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| Oct 18, 3:38 PM EDT | Lake Wind Advisory | CHS | 52 hr |
| Oct 19, 3:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 19, 3:52 PM EDT | Special Weather Statement | CHS | 23 min |
| Oct 19, 4:44 PM EDT | Special Weather Statement | CHS | 16 min |
| Oct 29, 3:41 AM EDT | Frost Advisory | CHS | 29 hr |
| Oct 29, 8:46 AM EDT | Lake Wind Advisory | CHS | 14 hr |
| Nov 4, 3:33 AM EDT | Lake Wind Advisory | CHS | 39 hr |
| Nov 10, 3:39 AM EST | Lake Wind Advisory | CHS | 28 hr |
| Nov 10, 4:00 PM EST | Freeze Watch | CHS | 11 hr |
| Nov 11, 3:26 AM EST | Freeze Warning | CHS | 29 hr |
| Nov 15, 5:28 AM EST | Dense Fog Advisory | CHS | 5 hr |
| Nov 16, 4:06 PM EST | Mesoscale Discussion | SPC | 114 min |
| Nov 16, 4:30 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 16, 6:48 PM EST | Mesoscale Discussion | SPC | 87 min |
| Nov 16, 8:02 PM EST | Special Weather Statement | CHS | 28 min |
| Nov 16, 10:20 PM EST | Mesoscale Discussion | SPC | 55 min |
| Nov 17, 9:41 AM EST | Lake Wind Advisory | CHS | 13 hr |
| Nov 23, 4:31 AM EST | Lake Wind Advisory | CHS | 23 hr |
| Nov 27, 3:13 PM EST | Lake Wind Advisory | CHS | 30 hr |
| Nov 28, 6:46 PM EST | Special Weather Statement | CHS | 89 min |
| Nov 29, 3:17 AM EST | Lake Wind Advisory | CHS | 16 hr |
| Dec 6, 4:31 PM EST | Lake Wind Advisory | CHS | 19 hr |
| Dec 7, 11:17 AM EST | Wind Advisory | CHS | 5 hr |
| Dec 7, 3:50 PM EST | Lake Wind Advisory | CHS | 12 hr |
| Dec 7, 4:16 PM EST | Special Weather Statement | CHS | 44 min |
| Dec 10, 4:04 PM EST | Lake Wind Advisory | CHS | 24 hr |
| Dec 26, 4:02 PM EST | Lake Wind Advisory | CHS | 12 hr |
| Dec 27, 4:25 AM EST | Wind Advisory | CHS | 10 hr |
| Dec 27, 2:21 PM EST | Lake Wind Advisory | CHS | 17 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.