Alert archive / Arkansas / Marion County
Weather alerts in Marion County, Arkansas, 2020
114 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marion County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 114
- Warnings
- 30
- Watches
- 19
- Advisories
- 20
- Busiest month
- May23 alerts
- Busiest day
- May 3, 20206 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 1 tornado warnings covering Marion County in 2020 had a tornado report inside them.
Marion County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 0 | ||
| Severe thunderstorm warnings | 22 | 13 | 41% | 6 | 100% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Little Rock, AR: tornado warnings | 54 | 11 | 80% | 30 | 70% | 16 min |
| NWS Little Rock, AR: severe thunderstorm warnings | 376 | 136 | 64% | 298 | 85% | 24 min |
| NWS Little Rock, AR: flash flood warnings | 107 | 43 | 60% | 104 | 84% | 82 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 9, 4:30 AM CST | Flash Flood Watch | LZK | 49 hr |
| Jan 10, 4:55 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 5:34 PM CST | Tornado Watch | SPC | 11 hr |
| Jan 10, 7:30 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 8:46 PM CST | Severe Thunderstorm Warning | LZK | 59 min |
| Jan 10, 9:44 PM CST | Severe Thunderstorm Warning | LZK | 46 min |
| Jan 14, 4:01 AM CST | Dense Fog Advisory | LZK | 5 hr |
| Jan 14, 6:24 PM CST | Dense Fog Advisory | LZK | 15 hr |
| Jan 17, 2:46 AM CST | Winter Weather Advisory | LZK | 9 hr |
| Jan 21, 11:10 AM CST | Winter Weather Advisory | LZK | 49 hr |
| Jan 26, 10:52 PM CST | Dense Fog Advisory | LZK | 11 hr |
| Feb 6, 6:49 AM CST | Special Weather Statement | LZK | 56 min |
| Feb 24, 12:20 PM CST | Mesoscale Discussion | SPC | 115 min |
| Mar 2, 3:54 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 2, 5:21 PM CST | Tornado Watch | SPC | 8 hr |
| Mar 2, 5:22 PM CST | Special Weather Statement | LZK | 38 min |
| Mar 11, 4:27 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 12, 2:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Mar 12, 3:44 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 12, 3:48 PM CDT | Severe Thunderstorm Warning | LZK | 27 min |
| Mar 12, 3:58 PM CDT | Special Weather Statement | LZK | 47 min |
| Mar 12, 5:07 PM CDT | Severe Thunderstorm Warning | LZK | 38 min |
| Mar 18, 2:54 PM CDT | Flash Flood Watch | LZK | 31 hr |
| Mar 19, 11:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 19, 2:24 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 19, 6:42 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| Mar 19, 7:10 PM CDT | Tornado Warning | LZK | 50 min |
| Mar 24, 2:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 2:10 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 8, 5:10 AM CDT | Dense Fog Advisory | LZK | 5 hr |
| Apr 12, 3:17 AM CDT | Wind Advisory | LZK | 28 hr |
| Apr 12, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 12, 5:59 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 12, 6:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 12, 7:22 PM CDT | Special Weather Statement | LZK | 53 min |
| Apr 12, 7:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 3:45 PM CDT | Freeze Warning | LZK | 17 hr |
| Apr 14, 2:38 PM CDT | Freeze Warning | LZK | 18 hr |
| Apr 17, 2:05 PM CDT | Freeze Warning | LZK | 19 hr |
| Apr 20, 1:33 AM CDT | Dense Fog Advisory | LZK | 9 hr |
| Apr 24, 8:31 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 27, 7:59 PM CDT | Special Weather Statement | LZK | 31 min |
| Apr 28, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 8:42 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| May 3, 10:34 AM CDT | Mesoscale Discussion | SPC | 86 min |
| May 3, 11:03 AM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| May 3, 11:44 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 3, 11:44 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 3, 11:45 AM CDT | Special Weather Statement | LZK | 45 min |
| May 3, 11:54 AM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| May 4, 9:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 4, 10:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 11:49 AM CDT | Special Weather Statement | LZK | 41 min |
| May 4, 12:34 PM CDT | Special Weather Statement | LZK | 41 min |
| May 4, 12:35 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 4, 1:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 8, 2:38 PM CDT | Frost Advisory | LZK | 17 hr |
| May 14, 1:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 4:45 PM CDT | Flash Flood Watch | LZK | 16 hr |
| May 22, 11:29 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 22, 12:06 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| May 24, 4:13 PM CDT | Special Weather Statement | LZK | 47 min |
| May 25, 3:17 AM CDT | Flash Flood Watch | LZK | 48 hr |
| May 25, 10:04 PM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| May 25, 10:42 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| May 27, 4:26 PM CDT | Special Weather Statement | LZK | 49 min |
| May 27, 5:47 PM CDT | Special Weather Statement | LZK | 43 min |
| Jun 4, 5:42 AM CDT | Severe Thunderstorm Warning | LZK | 63 min |
| Jun 4, 5:44 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 4, 6:01 AM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Jun 4, 6:28 AM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Jun 7, 2:50 AM CDT | Flash Flood Watch | LZK | 49 hr |
| Jun 21, 3:21 AM CDT | Dense Fog Advisory | LZK | 6 hr |
| Jun 30, 2:22 PM CDT | Heat Advisory | LZK | 53 hr |
| Jul 1, 11:51 AM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| Jul 1, 12:28 PM CDT | Severe Thunderstorm Warning | LZK | 37 min |
| Jul 2, 4:40 PM CDT | Special Weather Statement | LZK | 35 min |
| Jul 2, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 4:42 PM CDT | Special Weather Statement | LZK | 48 min |
| Jul 9, 7:16 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 10, 9:19 PM CDT | Heat Advisory | LZK | 23 hr |
| Jul 16, 12:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 11:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 4:27 PM CDT | Special Weather Statement | LZK | 33 min |
| Aug 2, 5:24 PM CDT | Special Weather Statement | LZK | 36 min |
| Aug 9, 5:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 10, 4:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 11, 12:03 PM CDT | Severe Thunderstorm Warning | LZK | 30 min |
| Aug 11, 12:34 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 15, 2:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 4:01 AM CDT | Flash Flood Watch | LZK | 27 hr |
| Aug 29, 11:40 AM CDT | Special Weather Statement | LZK | 50 min |
| Aug 29, 11:56 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 29, 11:59 AM CDT | Severe Thunderstorm Warning | LZK | 29 min |
| Aug 29, 8:47 PM CDT | Special Weather Statement | LZK | 43 min |
| Aug 31, 2:49 PM CDT | Flash Flood Watch | LZK | 60 hr |
| Sep 3, 3:11 AM CDT | Dense Fog Advisory | LZK | 6 hr |
| Sep 24, 9:35 PM CDT | Dense Fog Advisory | LZK | 9 hr |
| Sep 25, 8:07 AM CDT | Dense Fog Advisory | LZK | 113 min |
| Oct 15, 3:52 AM CDT | Frost Advisory | LZK | 29 hr |
| Oct 16, 2:25 PM CDT | Red Flag Warning | LZK | 29 hr |
| Oct 17, 11:03 AM CDT | Wind Advisory | LZK | 7 hr |
| Oct 20, 10:58 PM CDT | Dense Fog Advisory | LZK | 11 hr |
| Oct 28, 11:19 AM CDT | Flood Watch | LZK | 26 hr |
| Oct 28, 8:21 PM CDT | Areal Flood Warning | LZK | 4 hr |
| Nov 1, 3:42 AM CST | Freeze Warning | LZK | 28 hr |
| Nov 14, 5:14 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 14, 7:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 14, 10:18 PM CST | Special Weather Statement | LZK | 42 min |
| Nov 14, 10:34 PM CST | Severe Thunderstorm Warning | LZK | 41 min |
| Nov 14, 10:58 PM CST | Severe Thunderstorm Warning | LZK | 32 min |
| Nov 19, 1:08 PM CST | Red Flag Warning | LZK | 5 hr |
| Nov 21, 9:12 PM CST | Dense Fog Advisory | LZK | 6 hr |
| Dec 12, 3:23 PM CST | Winter Weather Advisory | LZK | 33 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 | 22 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 7 |
| Flood Watch | 1 |
| Winter | |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.