Alert archive / Arkansas / Clark County
Weather alerts in Clark County, Arkansas, 2018
137 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Clark County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 137
- Warnings
- 52
- Watches
- 22
- Advisories
- 18
- Busiest month
- July26 alerts
- Busiest day
- December 1, 20188 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Clark County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 20 | 12 | 40% | 5 | 100% | 18 min |
| Flash flood warnings | 8 | 3 | 63% | 4 | 100% | 241 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Little Rock, AR: tornado warnings | 45 | 6 | 87% | 13 | 77% | 9 min |
| NWS Little Rock, AR: severe thunderstorm warnings | 406 | 187 | 54% | 377 | 84% | 21 min |
| NWS Little Rock, AR: flash flood warnings | 139 | 53 | 62% | 109 | 94% | 89 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 11, 1:49 PM CST | Lake Wind Advisory | LZK | 22 hr |
| Jan 14, 8:45 PM CST | Wind Chill Advisory | LZK | 43 hr |
| Jan 15, 4:12 AM CST | Winter Storm Warning | LZK | 28 hr |
| Jan 21, 6:25 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 9:35 PM CST | Mesoscale Discussion | SPC | 115 min |
| Jan 21, 9:59 PM CST | Tornado Watch | SPC | 6 hr |
| Jan 21, 11:02 PM CST | Severe Thunderstorm Warning | LZK | 43 min |
| Jan 22, 1:16 AM CST | Mesoscale Discussion | SPC | 119 min |
| Feb 17, 10:45 PM CST | Dense Fog Advisory | LZK | 10 hr |
| Feb 19, 2:45 PM CST | Flood Watch | LZK | 5 days |
| Feb 20, 9:31 AM CST | River Flood Warning | LZK | 6 days |
| Feb 20, 9:34 AM CST | River Flood Warning | LZK | 6 days |
| Feb 21, 11:59 AM CST | Areal Flood Warning | LZK | 6 hr |
| Feb 21, 2:48 PM CST | Areal Flood Warning | LZK | 15 hr |
| Feb 21, 5:53 PM CST | Areal Flood Warning | LZK | 6 hr |
| Feb 22, 8:54 PM CST | Flash Flood Warning | LZK | 3 hr |
| Feb 23, 1:58 AM CST | Areal Flood Warning | LZK | 6 hr |
| Feb 23, 7:39 AM CST | Areal Flood Warning | LZK | 6 hr |
| Feb 23, 1:17 PM CST | Areal Flood Warning | LZK | 18 hr |
| Feb 24, 10:26 AM CST | Mesoscale Discussion | SPC | 64 min |
| Feb 24, 11:01 AM CST | Tornado Watch | SPC | 8 hr |
| Feb 24, 1:39 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 24, 2:06 PM CST | Severe Thunderstorm Warning | LZK | 39 min |
| Feb 24, 2:42 PM CST | Severe Thunderstorm Warning | LZK | 48 min |
| Feb 24, 3:26 PM CST | Flash Flood Warning | LZK | 5 hr |
| Feb 24, 3:33 PM CST | Severe Thunderstorm Warning | LZK | 42 min |
| Feb 24, 7:51 PM CST | Areal Flood Warning | LZK | 3 hr |
| Feb 24, 8:00 PM CST | Flash Flood Warning | LZK | 3 hr |
| Feb 24, 9:55 PM CST | Areal Flood Warning | LZK | 6 hr |
| Feb 26, 2:51 PM CST | Flood Watch | LZK | 69 hr |
| Feb 27, 8:43 AM CST | River Flood Warning | LZK | 4 days |
| Feb 28, 9:59 AM CST | River Flood Warning | LZK | 4 days |
| Feb 28, 8:10 PM CST | Flash Flood Warning | LZK | 12 hr |
| Feb 28, 11:53 PM CST | Flash Flood Warning | LZK | 8 hr |
| Mar 1, 7:58 AM CST | Areal Flood Warning | LZK | 9 hr |
| Mar 10, 3:11 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 10, 3:43 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 10, 5:57 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 10, 8:06 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 19, 4:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 19, 5:58 AM CDT | Severe Thunderstorm Warning | LZK | 32 min |
| Mar 26, 3:41 AM CDT | Flood Watch | LZK | 66 hr |
| Apr 3, 12:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 1:33 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 3, 3:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 6, 12:09 PM CDT | River Flood Warning | LZK | 64 hr |
| Apr 7, 3:17 AM CDT | Freeze Warning | LZK | 30 hr |
| Apr 13, 12:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 1:50 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 5:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 13, 8:13 PM CDT | Severe Thunderstorm Warning | LZK | 62 min |
| Apr 13, 8:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 13, 9:13 PM CDT | Severe Thunderstorm Warning | LZK | 62 min |
| Apr 13, 9:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 14, 10:53 AM CDT | River Flood Warning | LZK | 25 hr |
| Apr 15, 3:26 AM CDT | Freeze Warning | LZK | 30 hr |
| May 3, 12:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 3, 1:44 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 3, 3:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| May 3, 4:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 16, 11:21 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 5:01 PM CDT | Special Weather Statement | LZK | 44 min |
| May 23, 5:53 PM CDT | Special Weather Statement | LZK | 52 min |
| May 26, 2:26 PM CDT | Severe Thunderstorm Warning | LZK | 36 min |
| Jun 2, 1:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 8, 4:06 PM CDT | Severe Thunderstorm Warning | LZK | 24 min |
| Jun 8, 6:29 PM CDT | Special Weather Statement | LZK | 31 min |
| Jun 13, 4:42 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| Jun 13, 5:19 PM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| Jun 22, 11:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 4:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 23, 4:48 AM CDT | Special Weather Statement | LZK | 42 min |
| Jun 24, 5:28 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 24, 7:37 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 24, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 7:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 27, 2:42 PM CDT | Heat Advisory | LZK | 3 days |
| Jul 2, 3:59 PM CDT | Severe Thunderstorm Warning | LZK | 31 min |
| Jul 2, 4:26 PM CDT | Severe Thunderstorm Warning | LZK | 23 min |
| Jul 3, 1:58 PM CDT | Severe Thunderstorm Warning | LZK | 32 min |
| Jul 3, 2:29 PM CDT | Special Weather Statement | LZK | 31 min |
| Jul 5, 3:41 PM CDT | Special Weather Statement | LZK | 34 min |
| Jul 5, 3:47 PM CDT | Severe Thunderstorm Warning | LZK | 28 min |
| Jul 5, 4:55 PM CDT | Special Weather Statement | LZK | 35 min |
| Jul 11, 5:49 PM CDT | Severe Thunderstorm Warning | LZK | 26 min |
| Jul 12, 4:38 PM CDT | Special Weather Statement | LZK | 52 min |
| Jul 13, 3:21 AM CDT | Heat Advisory | LZK | 17 hr |
| Jul 14, 4:04 AM CDT | Heat Advisory | LZK | 16 hr |
| Jul 15, 3:33 AM CDT | Heat Advisory | LZK | 15 hr |
| Jul 17, 6:34 PM CDT | Special Weather Statement | LZK | 26 min |
| Jul 18, 2:43 PM CDT | Heat Advisory | LZK | 30 hr |
| Jul 18, 2:43 PM CDT | Heat Advisory | LZK | 37 hr |
| Jul 19, 8:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 19, 8:54 PM CDT | Severe Thunderstorm Watch | SPC | 114 min |
| Jul 20, 3:37 AM CDT | Excessive Heat Warning | LZK | 17 hr |
| Jul 20, 3:04 PM CDT | Heat Advisory | LZK | 28 hr |
| Jul 20, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 21, 2:33 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 21, 3:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 2:30 AM CDT | Dense Fog Advisory | LZK | 7 hr |
| Jul 30, 9:50 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 30, 10:39 AM CDT | Special Weather Statement | LZK | 36 min |
| Jul 31, 7:40 AM CDT | Special Weather Statement | LZK | 35 min |
| Aug 8, 3:50 PM CDT | Special Weather Statement | LZK | 55 min |
| Aug 8, 4:20 PM CDT | Severe Thunderstorm Warning | LZK | 40 min |
| Aug 9, 8:54 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 16, 2:27 PM CDT | Heat Advisory | LZK | 5 hr |
| Aug 19, 8:16 PM CDT | Special Weather Statement | LZK | 59 min |
| Aug 19, 8:46 PM CDT | Severe Thunderstorm Warning | LZK | 29 min |
| Sep 4, 2:25 PM CDT | Flash Flood Watch | LZK | 4 days |
| Sep 8, 4:05 PM CDT | Flash Flood Warning | LZK | 86 min |
| Sep 20, 2:15 PM CDT | Flash Flood Watch | LZK | 65 hr |
| Sep 21, 6:01 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Oct 9, 6:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 31, 3:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Oct 31, 4:11 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 31, 7:26 PM CDT | Areal Flood Warning | LZK | 6 hr |
| Nov 1, 6:22 AM CDT | River Flood Warning | LZK | 25 hr |
| Nov 6, 12:49 AM CST | Dense Fog Advisory | LZK | 11 hr |
| Nov 8, 3:56 AM CST | Freeze Watch | LZK | 24 hr |
| Nov 8, 8:33 PM CST | Freeze Warning | LZK | 36 hr |
| Nov 23, 10:10 PM CST | Dense Fog Advisory | LZK | 13 hr |
| Nov 30, 3:34 PM CST | Mesoscale Discussion | SPC | 116 min |
| Nov 30, 6:17 PM CST | Mesoscale Discussion | SPC | 58 min |
| Nov 30, 6:40 PM CST | Tornado Watch | SPC | 7 hr |
| Nov 30, 9:02 PM CST | Mesoscale Discussion | SPC | 58 min |
| Nov 30, 11:20 PM CST | Mesoscale Discussion | SPC | 85 min |
| Dec 1, 12:58 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 1, 1:31 AM CST | Severe Thunderstorm Warning | LZK | 44 min |
| Dec 1, 1:58 AM CST | Tornado Watch | SPC | 5 hr |
| Dec 1, 2:05 AM CST | Severe Thunderstorm Warning | LZK | 40 min |
| Dec 8, 10:48 AM CST | River Flood Warning | LZK | 25 hr |
| Dec 14, 8:23 PM CST | River Flood Warning | LZK | 23 hr |
| Dec 16, 8:22 PM CST | Dense Fog Advisory | LZK | 16 hr |
| Dec 17, 9:47 PM CST | Dense Fog Advisory | LZK | 12 hr |
| Dec 18, 9:42 PM CST | Dense Fog Advisory | LZK | 11 hr |
| Dec 26, 1:11 PM CST | Wind Advisory | LZK | 23 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 | 20 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 32 |
| Special Weather Statement | 13 |
| Flooding | |
| Areal Flood Warning | 10 |
| Flash Flood Warning | 8 |
| River Flood Warning | 9 |
| Flash Flood Watch | 2 |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Lake Wind Advisory | 1 |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.