Alert archive / Maryland / Carroll County
Weather alerts in Carroll County, Maryland, 2012
236 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Carroll County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 236
- Warnings
- 72
- Watches
- 36
- Advisories
- 45
- Busiest month
- June49 alerts
- Busiest day
- June 1, 201217 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
4 of 9 tornado warnings covering Carroll County in 2012 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 20 minutes after it went out.
Carroll County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 9 | 4 | 56% | 2 | 100% | 20 min |
| Severe thunderstorm warnings | 35 | 28 | 20% | 25 | 80% | 26 min |
| Flash flood warnings | 5 | 4 | 20% | 7 | 29% | 40 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 43 | 9 | 79% | 18 | 61% | 13 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 365 | 286 | 22% | 1,001 | 90% | 26 min |
| NWS Baltimore/Washington: flash flood warnings | 81 | 46 | 43% | 156 | 78% | 70 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 10, 5:22 AM EST | Dense Fog Advisory | LWX | 4 hr |
| Jan 12, 1:51 PM EST | Wind Advisory | LWX | 28 hr |
| Jan 20, 1:00 PM EST | Winter Weather Advisory | LWX | 24 hr |
| Jan 22, 1:26 PM EST | Freezing Rain Advisory | LWX | 22 hr |
| Jan 23, 8:06 AM EST | Dense Fog Advisory | LWX | 4 hr |
| Jan 23, 11:04 AM EST | Freezing Rain Advisory | LWX | 114 min |
| Jan 24, 1:01 AM EST | Dense Fog Advisory | LWX | 9 hr |
| Jan 27, 6:57 AM EST | Special Weather Statement | LWX | 33 min |
| Feb 8, 3:27 AM EST | Winter Weather Advisory | LWX | 17 hr |
| Feb 10, 1:56 PM EST | Winter Weather Advisory | LWX | 29 hr |
| Feb 11, 12:38 PM EST | Wind Advisory | LWX | 17 hr |
| Feb 11, 2:39 PM EST | Special Weather Statement | LWX | 81 min |
| Feb 23, 10:05 AM EST | Fire Weather Watch | LWX | 18 hr |
| Feb 23, 1:40 PM EST | High Wind Watch | LWX | 14 hr |
| Feb 24, 3:53 AM EST | High Wind Warning | LWX | 14 hr |
| Feb 24, 3:53 AM EST | Wind Advisory | LWX | 20 hr |
| Feb 25, 12:08 AM EST | Wind Advisory | LWX | 3 hr |
| Feb 25, 2:52 AM EST | Wind Advisory | LWX | 15 hr |
| Feb 29, 7:25 PM EST | Areal Flood Warning | LWX | 3 hr |
| Mar 1, 2:27 AM EST | Dense Fog Advisory | LWX | 6 hr |
| Mar 2, 11:53 AM EST | Flood Watch | LWX | 18 hr |
| Mar 2, 10:41 PM EST | Special Weather Statement | LWX | 79 min |
| Mar 8, 11:21 PM EST | Special Weather Statement | LWX | 24 min |
| Mar 8, 11:52 PM EST | Special Weather Statement | LWX | 23 min |
| Mar 17, 5:11 AM EDT | Dense Fog Advisory | LWX | 3 hr |
| Mar 22, 3:55 AM EDT | Dense Fog Advisory | LWX | 7 hr |
| Mar 23, 4:05 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| Mar 25, 2:52 PM EDT | Freeze Watch | LWX | 26 hr |
| Mar 26, 4:10 AM EDT | Freeze Warning | LWX | 29 hr |
| Mar 29, 1:58 PM EDT | Frost Advisory | LWX | 19 hr |
| Apr 2, 12:01 PM EDT | Freeze Warning | LWX | 20 hr |
| Apr 5, 4:31 AM EDT | Freeze Watch | LWX | 23 hr |
| Apr 5, 11:32 AM EDT | Freeze Warning | LWX | 21 hr |
| Apr 6, 3:54 AM EDT | Freeze Warning | LWX | 28 hr |
| Apr 6, 2:25 PM EDT | Fire Weather Watch | LWX | 14 hr |
| Apr 7, 4:14 AM EDT | Fire Weather Watch | LWX | 17 hr |
| Apr 7, 4:14 AM EDT | Red Flag Warning | LWX | 15 hr |
| Apr 7, 2:47 PM EDT | Freeze Warning | LWX | 16 hr |
| Apr 7, 9:05 PM EDT | Red Flag Warning | LWX | 23 hr |
| Apr 8, 3:28 AM EDT | Fire Weather Watch | LWX | 22 hr |
| Apr 8, 8:19 PM EDT | Red Flag Warning | LWX | 23 hr |
| Apr 9, 10:34 AM EDT | Fire Weather Watch | LWX | 10 hr |
| Apr 9, 8:39 PM EDT | Red Flag Warning | LWX | 27 hr |
| Apr 10, 3:54 PM EDT | Freeze Watch | LWX | 22 hr |
| Apr 12, 2:54 PM EDT | Frost Advisory | LWX | 16 hr |
| Apr 24, 8:01 PM EDT | Frost Advisory | LWX | 12 hr |
| Apr 26, 8:41 PM EDT | Special Weather Statement | LWX | 34 min |
| Apr 27, 10:03 AM EDT | Freeze Watch | LWX | 4 hr |
| Apr 27, 1:55 PM EDT | Freeze Warning | LWX | 19 hr |
| May 3, 9:16 PM EDT | Special Weather Statement | LWX | 29 min |
| May 3, 9:42 PM EDT | Special Weather Statement | LWX | 48 min |
| May 3, 9:58 PM EDT | Severe Thunderstorm Warning | LWX | 22 min |
| May 4, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 4:07 PM EDT | Special Weather Statement | LWX | 23 min |
| May 23, 6:41 PM EDT | Special Weather Statement | LWX | 34 min |
| May 23, 7:08 PM EDT | Special Weather Statement | LWX | 37 min |
| May 27, 6:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 27, 7:46 PM EDT | Special Weather Statement | LWX | 59 min |
| May 28, 4:16 AM EDT | Heat Advisory | LWX | 17 hr |
| May 29, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 29, 5:12 PM EDT | Special Weather Statement | LWX | 48 min |
| May 29, 6:06 PM EDT | Special Weather Statement | LWX | 39 min |
| May 29, 6:31 PM EDT | Special Weather Statement | LWX | 44 min |
| May 29, 7:29 PM EDT | Special Weather Statement | LWX | 61 min |
| Jun 1, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 1, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 1, 1:50 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 1, 2:05 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jun 1, 2:16 PM EDT | Tornado Warning | LWX | 29 min |
| Jun 1, 2:35 PM EDT | Tornado Warning | LWX | 25 min |
| Jun 1, 2:54 PM EDT | Severe Thunderstorm Warning | LWX | 66 min |
| Jun 1, 2:54 PM EDT | Tornado Warning | LWX | 51 min |
| Jun 1, 3:06 PM EDT | Tornado Warning | LWX | 24 min |
| Jun 1, 3:18 PM EDT | Flash Flood Warning | LWX | 6 hr |
| Jun 1, 3:30 PM EDT | Tornado Warning | LWX | 45 min |
| Jun 1, 3:40 PM EDT | Flash Flood Watch | LWX | 8 hr |
| Jun 1, 3:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 1, 4:07 PM EDT | Flash Flood Warning | LWX | 6 hr |
| Jun 1, 4:22 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Jun 1, 4:24 PM EDT | Tornado Warning | LWX | 36 min |
| Jun 1, 6:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 8:01 PM EDT | Tornado Watch | SPC | 4 hr |
| Jun 1, 8:46 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jun 1, 8:50 PM EDT | Tornado Warning | LWX | 12 min |
| Jun 1, 8:55 PM EDT | Tornado Warning | LWX | 35 min |
| Jun 1, 9:10 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Jun 1, 9:55 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Jun 3, 1:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 6:20 PM EDT | Special Weather Statement | LWX | 25 min |
| Jun 3, 6:32 PM EDT | Special Weather Statement | LWX | 58 min |
| Jun 3, 6:39 PM EDT | Severe Thunderstorm Warning | LWX | 53 min |
| Jun 7, 6:25 PM EDT | Special Weather Statement | LWX | 35 min |
| Jun 7, 6:46 PM EDT | Special Weather Statement | LWX | 29 min |
| Jun 19, 1:57 PM EDT | Heat Advisory | LWX | 51 hr |
| Jun 20, 3:21 AM EDT | Heat Advisory | LWX | 38 hr |
| Jun 22, 12:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 2:12 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 5:16 PM EDT | Special Weather Statement | LWX | 44 min |
| Jun 22, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jun 22, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Jun 22, 6:23 PM EDT | Severe Thunderstorm Warning | LWX | 37 min |
| Jun 22, 6:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 28, 2:46 PM EDT | Heat Advisory | LWX | 30 hr |
| Jun 29, 4:20 AM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jun 29, 4:34 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 29, 4:37 AM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jun 29, 4:52 AM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jun 29, 6:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 29, 9:34 PM EDT | Severe Thunderstorm Warning | LWX | 56 min |
| Jun 29, 10:17 PM EDT | Severe Thunderstorm Warning | LWX | 58 min |
| Jun 29, 10:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 29, 11:07 PM EDT | Severe Thunderstorm Warning | LWX | 53 min |
| Jun 30, 4:19 AM EDT | Heat Advisory | LWX | 14 hr |
| Jul 4, 3:12 PM EDT | Special Weather Statement | LWX | 3 hr |
| Jul 5, 4:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 5, 7:08 PM EDT | Special Weather Statement | LWX | 32 min |
| Jul 5, 9:20 PM EDT | Excessive Heat Watch | LWX | 16 hr |
| Jul 6, 1:49 PM EDT | Excessive Heat Warning | LWX | 32 hr |
| Jul 6, 1:49 PM EDT | Heat Advisory | LWX | 32 hr |
| Jul 7, 5:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 7, 6:14 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 8, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 17, 1:40 PM EDT | Heat Advisory | LWX | 31 hr |
| Jul 18, 12:41 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 2:57 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 18, 3:15 PM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| Jul 18, 3:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 18, 4:03 PM EDT | Special Weather Statement | LWX | 27 min |
| Jul 19, 6:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 19, 7:56 PM EDT | Special Weather Statement | LWX | 49 min |
| Jul 19, 10:17 PM EDT | Flash Flood Warning | LWX | 3 hr |
| Jul 20, 4:26 AM EDT | Flash Flood Watch | LWX | 17 hr |
| Jul 24, 11:48 AM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 24, 1:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 4:27 PM EDT | Special Weather Statement | LWX | 48 min |
| Jul 25, 2:08 PM EDT | Heat Advisory | LWX | 30 hr |
| Jul 26, 3:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 7:37 PM EDT | Special Weather Statement | LWX | 38 min |
| Jul 26, 8:17 PM EDT | Special Weather Statement | LWX | 28 min |
| Jul 26, 8:31 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jul 26, 9:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 26, 9:26 PM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jul 26, 9:56 PM EDT | Flash Flood Warning | LWX | 3 hr |
| Jul 28, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 1:36 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 28, 4:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 5, 2:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 5, 3:21 PM EDT | Special Weather Statement | LWX | 24 min |
| Aug 5, 3:33 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Aug 5, 3:36 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 9, 5:17 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Aug 9, 7:44 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Aug 10, 3:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 10, 6:07 PM EDT | Special Weather Statement | LWX | 38 min |
| Aug 10, 6:43 PM EDT | Special Weather Statement | LWX | 47 min |
| Aug 10, 7:29 PM EDT | Special Weather Statement | LWX | 31 min |
| Aug 10, 7:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 14, 2:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 14, 6:33 PM EDT | Special Weather Statement | LWX | 27 min |
| Aug 14, 7:00 PM EDT | Special Weather Statement | LWX | 30 min |
| Aug 14, 7:03 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Aug 14, 7:44 PM EDT | Special Weather Statement | LWX | 31 min |
| Aug 14, 8:10 PM EDT | Special Weather Statement | LWX | 35 min |
| Aug 14, 8:14 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Aug 14, 8:32 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Aug 14, 8:49 PM EDT | Tornado Warning | LWX | 26 min |
| Aug 14, 9:48 PM EDT | Special Weather Statement | LWX | 27 min |
| Aug 14, 9:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 10:14 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Aug 26, 12:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 26, 2:35 PM EDT | Special Weather Statement | LWX | 40 min |
| Aug 26, 2:42 PM EDT | Flash Flood Watch | LWX | 7 hr |
| Aug 26, 5:03 PM EDT | Special Weather Statement | LWX | 42 min |
| Sep 1, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Sep 1, 7:03 PM EDT | Special Weather Statement | CTP | 42 min |
| Sep 1, 7:19 PM EDT | Severe Thunderstorm Warning | LWX | 9 min |
| Sep 8, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 8, 12:15 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 8, 1:09 PM EDT | Severe Thunderstorm Warning | LWX | 66 min |
| Sep 8, 2:10 PM EDT | Severe Thunderstorm Warning | LWX | 80 min |
| Sep 8, 2:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 18, 8:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 18, 10:54 AM EDT | Tornado Watch | SPC | 9 hr |
| Sep 18, 11:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Sep 18, 11:39 AM EDT | Special Weather Statement | LWX | 66 min |
| Sep 18, 12:19 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Sep 18, 12:39 PM EDT | Flash Flood Warning | LWX | 4 hr |
| Sep 18, 1:10 PM EDT | Severe Thunderstorm Warning | LWX | 54 min |
| Sep 18, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Sep 18, 1:56 PM EDT | Flash Flood Watch | LWX | 4 hr |
| Sep 18, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| Sep 18, 3:24 PM EDT | Severe Thunderstorm Warning | LWX | 66 min |
| Sep 18, 3:53 PM EDT | Areal Flood Warning | LWX | 20 hr |
| Sep 22, 3:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 22, 3:25 PM EDT | Special Weather Statement | LWX | 50 min |
| Sep 22, 4:07 PM EDT | Special Weather Statement | LWX | 23 min |
| Sep 22, 5:00 PM EDT | Special Weather Statement | LWX | 30 min |
| Sep 27, 4:42 AM EDT | Special Weather Statement | LWX | 33 min |
| Sep 27, 3:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 30, 4:07 PM EDT | Special Weather Statement | LWX | 23 min |
| Oct 2, 12:37 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Oct 3, 2:41 AM EDT | Dense Fog Advisory | LWX | 7 hr |
| Oct 11, 2:26 PM EDT | Freeze Watch | LWX | 24 hr |
| Oct 12, 2:00 PM EDT | Freeze Warning | LWX | 19 hr |
| Oct 18, 9:55 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| Oct 18, 10:30 PM EDT | Special Weather Statement | LWX | 30 min |
| Oct 18, 10:53 PM EDT | Special Weather Statement | LWX | 37 min |
| Oct 19, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Oct 27, 4:39 AM EDT | Flood Watch | LWX | 61 hr |
| Oct 27, 5:02 PM EDT | High Wind Watch | LWX | 12 hr |
| Oct 28, 4:34 AM EDT | High Wind Warning | LWX | 48 hr |
| Oct 29, 12:26 PM EDT | Areal Flood Warning | LWX | 26 hr |
| Oct 30, 4:13 AM EDT | Wind Advisory | LWX | 6 hr |
| Nov 4, 3:30 AM EST | Freeze Watch | LWX | 11 hr |
| Nov 4, 2:43 PM EST | Freeze Warning | LWX | 17 hr |
| Nov 5, 2:18 PM EST | Freeze Warning | LWX | 19 hr |
| Nov 7, 3:12 AM EST | Winter Weather Advisory | LWX | 7 hr |
| Nov 7, 10:08 AM EST | Winter Weather Advisory | LWX | 7 hr |
| Nov 12, 10:47 PM EST | Special Weather Statement | LWX | 43 min |
| Nov 26, 9:33 PM EST | Winter Weather Advisory | LWX | 12 hr |
| Dec 1, 9:57 PM EST | Dense Fog Advisory | LWX | 12 hr |
| Dec 8, 4:13 AM EST | Dense Fog Advisory | LWX | 5 hr |
| Dec 9, 7:10 PM EST | Dense Fog Advisory | LWX | 14 hr |
| Dec 16, 8:42 PM EST | Dense Fog Advisory | LWX | 13 hr |
| Dec 17, 2:16 PM EST | Dense Fog Advisory | LWX | 13 hr |
| Dec 20, 2:11 PM EST | High Wind Watch | LWX | 23 hr |
| Dec 20, 2:11 PM EST | Wind Advisory | LWX | 50 hr |
| Dec 22, 2:42 AM EST | High Wind Warning | LWX | 14 hr |
| Dec 23, 8:50 PM EST | Winter Weather Advisory | LWX | 31 hr |
| Dec 25, 1:13 AM EST | Dense Fog Advisory | LWX | 11 hr |
| Dec 25, 2:29 PM EST | Winter Weather Advisory | LWX | 35 hr |
| Dec 26, 12:48 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 1:40 PM EST | Wind Advisory | LWX | 27 hr |
| Dec 28, 4:30 AM EST | Winter Weather Advisory | LWX | 51 hr |
| Dec 30, 9:31 AM EST | Wind Advisory | LWX | 5 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 | 35 |
| Tornado Warning | 9 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 34 |
| Special Weather Statement | 49 |
| Flooding | |
| Areal Flood Warning | 6 |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Winter | |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 9 |
| Freeze Watch | 6 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 3 |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.