Alert archive / Arkansas / Logan County
Weather alerts in Logan County, Arkansas, 2009
153 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Logan County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 153
- Warnings
- 69
- Watches
- 21
- Advisories
- 10
- Busiest month
- May40 alerts
- Busiest day
- June 12, 200910 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Logan County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 49 | 24 | 51% | 11 | 100% | 29 min |
| Flash flood warnings | 17 | 6 | 65% | 3 | 67% | 16 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Little Rock, AR: tornado warnings | 50 | 8 | 84% | 11 | 82% | 26 min |
| NWS Little Rock, AR: severe thunderstorm warnings | 548 | 174 | 68% | 413 | 85% | 25 min |
| NWS Little Rock, AR: flash flood warnings | 167 | 71 | 57% | 138 | 87% | 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 26, 10:54 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 26, 6:59 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 27, 6:06 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 27, 12:16 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 10, 4:50 PM CST | Mesoscale Discussion | SPC | 85 min |
| Feb 10, 8:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Feb 10, 9:30 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 10, 11:13 PM CST | Mesoscale Discussion | SPC | 92 min |
| Feb 10, 11:33 PM CST | Severe Thunderstorm Warning | LZK | 57 min |
| Feb 17, 9:45 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 26, 5:56 PM CST | Mesoscale Discussion | SPC | 94 min |
| Feb 26, 6:12 PM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Feb 26, 7:42 PM CST | Mesoscale Discussion | SPC | 93 min |
| Feb 26, 7:53 PM CST | Severe Thunderstorm Warning | LZK | 67 min |
| Feb 26, 8:28 PM CST | Severe Thunderstorm Warning | LZK | 62 min |
| Feb 26, 8:40 PM CST | Severe Thunderstorm Warning | LZK | 65 min |
| Feb 27, 2:40 PM CST | Mesoscale Discussion | SPC | 65 min |
| Mar 24, 9:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Mar 24, 12:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Mar 24, 1:26 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Mar 24, 2:04 PM CDT | Severe Thunderstorm Warning | LZK | 56 min |
| Mar 26, 5:20 PM CDT | Severe Thunderstorm Warning | LZK | 25 min |
| Mar 26, 7:37 PM CDT | Severe Thunderstorm Warning | LZK | 38 min |
| Mar 26, 8:15 PM CDT | Severe Thunderstorm Warning | LZK | 12 min |
| Mar 27, 8:12 PM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| Mar 31, 8:44 AM CDT | River Flood Advisory | LZK | 46 hr |
| Apr 2, 8:45 AM CDT | River Flood Advisory | LZK | 36 hr |
| Apr 2, 12:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 4, 11:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 9, 1:44 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 9, 6:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 9, 7:21 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 9, 7:44 PM CDT | Severe Thunderstorm Warning | LZK | 61 min |
| Apr 9, 8:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Apr 9, 8:46 PM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Apr 18, 4:23 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 26, 11:50 AM CDT | River Flood Advisory | LZK | 43 hr |
| Apr 27, 8:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 28, 5:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Apr 29, 9:36 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 5:35 PM CDT | Severe Thunderstorm Warning | LZK | 40 min |
| Apr 29, 7:47 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Apr 30, 1:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 7:26 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 1, 10:32 AM CDT | Mesoscale Discussion | SPC | 58 min |
| May 1, 1:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 1, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 1, 6:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 1, 9:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 1, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 1, 11:36 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| May 1, 11:50 PM CDT | Flash Flood Warning | LZK | 6 hr |
| May 2, 1:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 2, 10:09 AM CDT | Flash Flood Warning | LZK | 3 hr |
| May 3, 9:19 AM CDT | River Flood Advisory | LZK | 22 hr |
| May 4, 9:38 AM CDT | River Flood Advisory | LZK | 21 hr |
| May 5, 8:45 AM CDT | River Flood Advisory | LZK | 36 hr |
| May 5, 9:55 PM CDT | Severe Thunderstorm Warning | LZK | 50 min |
| May 5, 10:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 5, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 6, 12:18 AM CDT | Flash Flood Warning | LZK | 4 hr |
| May 6, 1:43 AM CDT | Flash Flood Warning | LZK | 3 hr |
| May 6, 1:51 AM CDT | Flash Flood Warning | LZK | 3 hr |
| May 6, 2:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 9:22 AM CDT | River Flood Warning | LZK | 47 hr |
| May 8, 11:39 AM CDT | Severe Thunderstorm Warning | LZK | 36 min |
| May 8, 12:12 PM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| May 8, 5:52 PM CDT | Tornado Watch | SPC | 11 hr |
| May 8, 9:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 9, 12:18 AM CDT | Severe Thunderstorm Warning | LZK | 57 min |
| May 9, 1:12 AM CDT | Severe Thunderstorm Warning | LZK | 63 min |
| May 9, 1:25 AM CDT | Severe Thunderstorm Warning | LZK | 50 min |
| May 13, 9:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 13, 11:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 14, 12:32 AM CDT | Severe Thunderstorm Warning | LZK | 58 min |
| May 14, 1:14 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 14, 1:28 AM CDT | Severe Thunderstorm Warning | LZK | 62 min |
| May 16, 2:06 AM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| May 16, 3:12 AM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| May 19, 2:04 PM CDT | River Flood Advisory | LZK | 36 hr |
| May 21, 9:38 AM CDT | River Flood Advisory | LZK | 36 hr |
| May 21, 9:38 AM CDT | River Flood Advisory | LZK | 36 hr |
| May 27, 6:05 AM CDT | Severe Thunderstorm Warning | LZK | 22 min |
| Jun 10, 6:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 10, 6:37 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 10, 7:18 PM CDT | Severe Thunderstorm Warning | LZK | 57 min |
| Jun 10, 7:54 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Jun 10, 8:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jun 12, 6:23 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 12, 9:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 12, 10:03 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 12, 11:35 AM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 12, 12:26 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Jun 12, 1:04 PM CDT | Severe Thunderstorm Warning | LZK | 56 min |
| Jun 12, 1:09 PM CDT | Severe Thunderstorm Warning | LZK | 66 min |
| Jun 12, 1:28 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Jun 12, 1:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 12, 1:39 PM CDT | Severe Thunderstorm Warning | LZK | 66 min |
| Jun 12, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 12, 11:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 13, 3:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 14, 1:51 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 14, 2:37 AM CDT | Severe Thunderstorm Warning | LZK | 38 min |
| Jun 14, 3:05 AM CDT | Severe Thunderstorm Warning | LZK | 40 min |
| Jun 14, 5:26 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 25, 4:45 PM CDT | Severe Thunderstorm Warning | LZK | 31 min |
| Jun 30, 7:57 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 30, 12:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 30, 1:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 3:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 30, 6:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 11:52 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 4, 12:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 4, 6:20 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 4, 7:20 PM CDT | Mesoscale Discussion | SPC | 25 min |
| Jul 5, 12:12 AM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| Jul 13, 3:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 16, 2:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 16, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 5, 4:06 PM CDT | Severe Thunderstorm Warning | LZK | 54 min |
| Aug 5, 4:29 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 5, 4:47 PM CDT | Severe Thunderstorm Warning | LZK | 58 min |
| Aug 5, 5:23 PM CDT | Severe Thunderstorm Warning | LZK | 37 min |
| Aug 5, 5:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 5, 6:00 PM CDT | Severe Thunderstorm Warning | LZK | 60 min |
| Aug 5, 6:05 PM CDT | Severe Thunderstorm Warning | LZK | 40 min |
| Aug 10, 7:36 PM CDT | Severe Thunderstorm Warning | LZK | 54 min |
| Aug 10, 9:37 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 17, 4:06 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| Aug 17, 4:37 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 20, 7:05 AM CDT | Severe Thunderstorm Warning | LZK | 55 min |
| Sep 3, 5:11 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Sep 3, 6:18 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Sep 15, 3:04 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 16, 7:33 AM CDT | Flash Flood Warning | LZK | 4 hr |
| Sep 21, 1:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 21, 9:37 PM CDT | Mesoscale Discussion | SPC | 23 min |
| Sep 21, 9:56 PM CDT | Severe Thunderstorm Warning | LZK | 64 min |
| Sep 21, 10:18 PM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| Sep 21, 10:44 PM CDT | Flash Flood Warning | LZK | 2 hr |
| Oct 1, 5:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Oct 8, 8:00 PM CDT | Tornado Watch | SPC | 7 hr |
| Oct 9, 12:30 AM CDT | Flash Flood Warning | LZK | 6 hr |
| Oct 9, 1:02 AM CDT | Flash Flood Warning | LZK | 6 hr |
| Oct 9, 6:10 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Oct 9, 8:58 AM CDT | Areal Flood Warning | LZK | 4 hr |
| Oct 9, 9:57 AM CDT | River Flood Advisory | LZK | 45 hr |
| Oct 29, 5:26 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Oct 29, 5:27 PM CDT | Tornado Watch | SPC | 3 hr |
| Oct 29, 6:30 PM CDT | Severe Thunderstorm Warning | LZK | 45 min |
| Oct 29, 7:12 PM CDT | Flash Flood Warning | LZK | 6 hr |
| Oct 29, 8:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Dec 24, 9:43 AM CST | Areal Flood Warning | LZK | 4 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 | 49 |
| Severe Thunderstorm Watch | 15 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 53 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 17 |
| River Flood Warning | 1 |
| River Flood Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.