Alert archive / Oklahoma / Seminole County
Weather alerts in Seminole County, Oklahoma, 2013
182 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Seminole County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 182
- Warnings
- 43
- Watches
- 29
- Advisories
- 29
- Busiest month
- May47 alerts
- Busiest day
- June 1, 201314 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Seminole County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 28 | 17 | 39% | 6 | 67% | 30 min |
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Norman, OK: tornado warnings | 67 | 17 | 75% | 26 | 77% | 17 min |
| NWS Norman, OK: severe thunderstorm warnings | 689 | 337 | 51% | 841 | 79% | 24 min |
| NWS Norman, OK: flash flood warnings | 32 | 15 | 53% | 39 | 90% | 95 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 12, 10:52 AM CST | Winter Weather Advisory | OUN | 11 hr |
| Jan 13, 1:48 AM CST | Winter Weather Advisory | OUN | 4 hr |
| Jan 29, 9:46 AM CST | Mesoscale Discussion | SPC | 119 min |
| Jan 29, 10:59 AM CST | Tornado Watch | SPC | 8 hr |
| Feb 5, 8:45 PM CST | Dense Fog Advisory | OUN | 15 hr |
| Feb 19, 3:27 PM CST | Winter Weather Advisory | OUN | 48 hr |
| Feb 20, 7:09 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 1:49 AM CST | Winter Storm Watch | OUN | 24 hr |
| Feb 24, 1:36 AM CST | Winter Storm Warning | OUN | 51 hr |
| Feb 24, 7:23 PM CST | Winter Weather Advisory | OUN | 33 hr |
| Feb 25, 6:24 AM CST | Special Weather Statement | OUN | 21 min |
| Mar 9, 5:21 PM CST | Special Weather Statement | OUN | 24 min |
| Mar 30, 10:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 30, 6:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 30, 6:36 PM CDT | Special Weather Statement | OUN | 24 min |
| Mar 30, 6:52 PM CDT | Severe Thunderstorm Warning | OUN | 23 min |
| Mar 30, 6:55 PM CDT | Special Weather Statement | OUN | 35 min |
| Mar 30, 7:05 PM CDT | Severe Thunderstorm Warning | OUN | 40 min |
| Mar 30, 7:46 PM CDT | Severe Thunderstorm Warning | OUN | 44 min |
| Mar 30, 8:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 30, 8:28 PM CDT | Severe Thunderstorm Warning | OUN | 47 min |
| Mar 31, 1:13 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Mar 31, 4:33 AM CDT | Severe Thunderstorm Warning | OUN | 42 min |
| Apr 9, 9:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 10, 3:55 PM CDT | Freeze Warning | OUN | 17 hr |
| Apr 15, 2:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 15, 3:41 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 15, 7:04 PM CDT | Mesoscale Discussion | SPC | 41 min |
| Apr 15, 8:22 PM CDT | Severe Thunderstorm Warning | OUN | 38 min |
| Apr 15, 8:59 PM CDT | Special Weather Statement | OUN | 46 min |
| Apr 17, 1:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 17, 1:21 PM CDT | Tornado Watch | SPC | 10 hr |
| Apr 17, 5:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 17, 8:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 17, 9:49 PM CDT | Severe Thunderstorm Warning | OUN | 26 min |
| Apr 17, 10:37 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 17, 10:47 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 17, 11:05 PM CDT | Special Weather Statement | OUN | 25 min |
| Apr 17, 11:23 PM CDT | Severe Thunderstorm Warning | OUN | 82 min |
| Apr 17, 11:30 PM CDT | Severe Thunderstorm Warning | OUN | 75 min |
| Apr 18, 12:48 AM CDT | Special Weather Statement | OUN | 27 min |
| Apr 18, 2:15 AM CDT | River Flood Warning | OUN | 18 hr |
| Apr 18, 3:24 AM CDT | Flash Flood Warning | OUN | 4 hr |
| Apr 18, 3:26 AM CDT | Freeze Watch | OUN | 12 hr |
| Apr 18, 3:26 AM CDT | Freeze Warning | OUN | 30 hr |
| Apr 23, 1:40 PM CDT | Frost Advisory | OUN | 19 hr |
| Apr 24, 3:48 PM CDT | Frost Advisory | OUN | 16 hr |
| Apr 26, 7:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 10:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 10:59 PM CDT | Special Weather Statement | OUN | 31 min |
| Apr 26, 11:42 PM CDT | Severe Thunderstorm Warning | OUN | 63 min |
| May 1, 4:08 AM CDT | Freeze Watch | OUN | 36 hr |
| May 1, 3:49 PM CDT | Wind Advisory | OUN | 27 hr |
| May 2, 3:58 PM CDT | Freeze Warning | OUN | 17 hr |
| May 8, 8:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 8, 9:10 PM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| May 8, 10:20 PM CDT | Special Weather Statement | OUN | 25 min |
| May 8, 10:47 PM CDT | Special Weather Statement | OUN | 28 min |
| May 15, 3:35 PM CDT | Special Weather Statement | OUN | 25 min |
| May 15, 4:03 PM CDT | Special Weather Statement | OUN | 42 min |
| May 15, 7:04 PM CDT | Severe Thunderstorm Warning | OUN | 41 min |
| May 17, 5:01 AM CDT | Dense Fog Advisory | OUN | 5 hr |
| May 18, 10:44 PM CDT | Mesoscale Discussion | SPC | 31 min |
| May 18, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 18, 11:08 PM CDT | Special Weather Statement | OUN | 37 min |
| May 18, 11:15 PM CDT | Severe Thunderstorm Warning | OUN | 45 min |
| May 19, 12:07 AM CDT | Special Weather Statement | OUN | 23 min |
| May 19, 1:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| May 19, 2:14 PM CDT | Tornado Watch | SPC | 9 hr |
| May 19, 8:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 20, 12:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 1:10 PM CDT | Tornado Watch | SPC | 9 hr |
| May 20, 5:05 PM CDT | Severe Thunderstorm Warning | OUN | 55 min |
| May 21, 12:03 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 12:13 AM CDT | Severe Thunderstorm Warning | OUN | 47 min |
| May 21, 1:10 AM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| May 21, 3:12 AM CDT | Special Weather Statement | OUN | 33 min |
| May 21, 4:20 AM CDT | Mesoscale Discussion | SPC | 55 min |
| May 21, 7:39 AM CDT | Areal Flood Advisory | OUN | 3 hr |
| May 21, 9:46 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 21, 10:45 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 21, 12:10 PM CDT | Special Weather Statement | OUN | 35 min |
| May 21, 12:52 PM CDT | Special Weather Statement | OUN | 53 min |
| May 25, 7:56 PM CDT | Special Weather Statement | OUN | 64 min |
| May 29, 3:45 PM CDT | Tornado Watch | SPC | 7 hr |
| May 29, 6:13 PM CDT | Severe Thunderstorm Warning | OUN | 62 min |
| May 29, 6:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 29, 10:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 29, 10:44 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 30, 3:18 AM CDT | Mesoscale Discussion | SPC | 87 min |
| May 30, 12:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 12:30 PM CDT | Flash Flood Watch | OUN | 43 hr |
| May 30, 12:52 PM CDT | Tornado Watch | SPC | 10 hr |
| May 30, 2:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 30, 5:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 31, 2:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 31, 3:27 PM CDT | Tornado Watch | SPC | 9 hr |
| May 31, 4:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 31, 8:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| May 31, 8:59 PM CDT | Severe Thunderstorm Warning | OUN | 46 min |
| May 31, 9:40 PM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| May 31, 10:33 PM CDT | Severe Thunderstorm Warning | OUN | 42 min |
| May 31, 11:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 31, 11:10 PM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| May 31, 11:46 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 31, 11:56 PM CDT | Severe Thunderstorm Warning | OUN | 49 min |
| Jun 1, 12:57 AM CDT | River Flood Warning | OUN | 26 hr |
| Jun 1, 1:15 AM CDT | Flash Flood Warning | OUN | 3 hr |
| Jun 1, 2:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 4:13 AM CDT | Flash Flood Warning | OUN | 3 hr |
| Jun 1, 4:53 AM CDT | Areal Flood Advisory | OUN | 112 min |
| Jun 1, 6:20 AM CDT | Areal Flood Advisory | OUN | 115 min |
| Jun 4, 3:44 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 4, 2:43 PM CDT | River Flood Warning | OUN | 12 min |
| Jun 4, 4:06 PM CDT | Flash Flood Watch | OUN | 36 hr |
| Jun 15, 1:43 PM CDT | Severe Thunderstorm Warning | OUN | 62 min |
| Jun 15, 2:06 PM CDT | Special Weather Statement | OUN | 39 min |
| Jun 15, 2:47 PM CDT | Special Weather Statement | OUN | 58 min |
| Jun 16, 2:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 16, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 6:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 17, 12:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 17, 1:02 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 3:16 AM CDT | Severe Thunderstorm Warning | OUN | 44 min |
| Jun 17, 4:02 AM CDT | Special Weather Statement | OUN | 28 min |
| Jun 17, 4:17 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 27, 3:20 AM CDT | Heat Advisory | OUN | 17 hr |
| Jun 27, 9:47 PM CDT | Special Weather Statement | OUN | 28 min |
| Jul 10, 4:15 AM CDT | Heat Advisory | OUN | 35 hr |
| Jul 10, 2:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 10, 4:34 PM CDT | Special Weather Statement | OUN | 41 min |
| Jul 11, 7:58 PM CDT | Severe Thunderstorm Warning | OUN | 32 min |
| Jul 14, 5:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 14, 7:07 PM CDT | Special Weather Statement | OUN | 38 min |
| Jul 14, 7:21 PM CDT | Special Weather Statement | OUN | 39 min |
| Jul 14, 7:33 PM CDT | Severe Thunderstorm Warning | OUN | 42 min |
| Jul 14, 8:02 PM CDT | Special Weather Statement | OUN | 43 min |
| Jul 17, 2:49 PM CDT | Special Weather Statement | OUN | 26 min |
| Jul 24, 12:26 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Jul 24, 12:44 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 24, 1:44 AM CDT | Special Weather Statement | OUN | 31 min |
| Jul 24, 2:32 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 24, 3:25 AM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| Jul 24, 4:47 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 24, 3:40 PM CDT | Flash Flood Watch | OUN | 43 hr |
| Jul 26, 7:11 AM CDT | Flash Flood Warning | OUN | 3 hr |
| Jul 26, 8:07 AM CDT | River Flood Warning | OUN | 23 hr |
| Jul 30, 2:36 AM CDT | Areal Flood Advisory | OUN | 3 hr |
| Jul 30, 3:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Aug 5, 3:37 AM CDT | Heat Advisory | OUN | 66 hr |
| Aug 8, 5:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 8, 6:23 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 8, 8:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 8, 10:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 12, 4:26 AM CDT | Flash Flood Watch | OUN | 34 hr |
| Aug 12, 4:03 PM CDT | Severe Thunderstorm Warning | OUN | 27 min |
| Aug 15, 6:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 15, 10:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 17, 7:01 PM CDT | Special Weather Statement | OUN | 29 min |
| Oct 11, 11:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Oct 15, 12:00 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Oct 18, 11:47 AM CDT | Frost Advisory | OUN | 21 hr |
| Oct 27, 9:11 PM CDT | Dense Fog Advisory | OUN | 15 hr |
| Nov 2, 2:48 PM CDT | Frost Advisory | OUN | 19 hr |
| Nov 6, 3:37 AM CST | Frost Advisory | OUN | 28 hr |
| Nov 10, 5:49 PM CST | Hard Freeze Warning | OUN | 64 hr |
| Nov 21, 4:14 AM CST | Winter Weather Advisory | OUN | 50 hr |
| Nov 23, 4:45 AM CST | Winter Weather Advisory | OUN | 54 hr |
| Nov 24, 5:54 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 1, 5:13 AM CST | Dense Fog Advisory | OUN | 5 hr |
| Dec 1, 7:40 PM CST | Dense Fog Advisory | OUN | 18 hr |
| Dec 2, 4:58 PM CST | Dense Fog Advisory | OUN | 18 hr |
| Dec 3, 4:25 AM CST | Winter Storm Watch | OUN | 29 hr |
| Dec 4, 9:42 AM CST | Winter Storm Warning | OUN | 50 hr |
| Dec 13, 10:45 PM CST | Dense Fog Advisory | OUN | 7 hr |
| Dec 20, 11:18 AM CST | Ice Storm Warning | OUN | 28 hr |
| Dec 20, 3:32 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 20, 8:18 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 21, 3:08 PM CST | Winter Weather Advisory | OUN | 7 hr |
| Dec 24, 8:55 PM CST | Freezing Fog Advisory | OUN | 13 hr |
| Dec 26, 3:56 AM CST | Freezing Fog Advisory | OUN | 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 | 28 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 52 |
| Special Weather Statement | 29 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 4 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 4 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 2 |
| Frost Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.