Alert archive / Arkansas / Benton County
Weather alerts in Benton County, Arkansas, 2020
161 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Benton County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 161
- Warnings
- 56
- Watches
- 21
- Advisories
- 35
- Busiest month
- May32 alerts
- Busiest day
- January 10, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 3 tornado warnings covering Benton County in 2020 had a tornado report inside them.
Benton County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 2 | 33% | 0 | ||
| Severe thunderstorm warnings | 33 | 16 | 52% | 16 | 88% | 28 min |
| Flash flood warnings | 4 | 2 | 50% | 2 | 100% | 50 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Tulsa, OK: tornado warnings | 51 | 8 | 84% | 18 | 61% | 22 min |
| NWS Tulsa, OK: severe thunderstorm warnings | 391 | 154 | 61% | 385 | 84% | 24 min |
| NWS Tulsa, OK: flash flood warnings | 44 | 18 | 59% | 54 | 57% | 121 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, 3:51 AM CST | Flash Flood Watch | TSA | 47 hr |
| Jan 10, 10:42 AM CST | Tornado Watch | SPC | 10 hr |
| Jan 10, 1:44 PM CST | Mesoscale Discussion | SPC | 91 min |
| Jan 10, 3:12 PM CST | Tornado Warning | TSA | 28 min |
| Jan 10, 3:25 PM CST | Severe Thunderstorm Warning | TSA | 50 min |
| Jan 10, 3:39 PM CST | Severe Thunderstorm Warning | TSA | 36 min |
| Jan 10, 3:49 PM CST | Severe Thunderstorm Warning | TSA | 41 min |
| Jan 10, 3:50 PM CST | Areal Flood Advisory | TSA | 3 hr |
| Jan 10, 4:02 PM CST | Winter Weather Advisory | TSA | 23 hr |
| Jan 10, 4:12 PM CST | Severe Thunderstorm Warning | TSA | 48 min |
| Jan 10, 4:24 PM CST | Severe Thunderstorm Warning | TSA | 51 min |
| Jan 10, 5:10 PM CST | Severe Thunderstorm Warning | TSA | 48 min |
| Jan 10, 6:16 PM CST | Flash Flood Warning | TSA | 6 hr |
| Jan 10, 7:05 PM CST | Areal Flood Advisory | TSA | 6 hr |
| Jan 11, 12:06 AM CST | Areal Flood Warning | TSA | 6 hr |
| Jan 13, 9:21 PM CST | Dense Fog Advisory | TSA | 13 hr |
| Jan 21, 1:17 PM CST | Winter Weather Advisory | TSA | 47 hr |
| Jan 23, 2:29 PM CST | Winter Weather Advisory | TSA | 18 hr |
| Jan 26, 9:06 PM CST | Dense Fog Advisory | TSA | 12 hr |
| Feb 3, 3:33 PM CST | Winter Storm Watch | TSA | 23 hr |
| Feb 4, 11:04 AM CST | Winter Storm Warning | TSA | 37 hr |
| Feb 4, 2:45 PM CST | Winter Weather Advisory | TSA | 33 hr |
| Mar 8, 12:11 PM CDT | Red Flag Warning | TSA | 6 hr |
| Mar 11, 4:27 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 5:46 AM CDT | Severe Thunderstorm Warning | TSA | 44 min |
| Mar 11, 6:28 AM CDT | Severe Thunderstorm Warning | TSA | 47 min |
| Mar 18, 4:19 PM CDT | Flash Flood Watch | TSA | 27 hr |
| Mar 19, 6:32 AM CDT | Special Weather Statement | TSA | 28 min |
| Mar 19, 11:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 19, 11:15 AM CDT | Areal Flood Advisory | TSA | 3 hr |
| Mar 19, 12:14 PM CDT | Flash Flood Warning | TSA | 6 hr |
| Mar 19, 12:18 PM CDT | Special Weather Statement | TSA | 27 min |
| Mar 19, 12:58 PM CDT | Special Weather Statement | TSA | 47 min |
| Mar 19, 2:24 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 19, 6:20 PM CDT | Areal Flood Warning | TSA | 6 hr |
| Mar 20, 3:50 PM CDT | Freeze Warning | TSA | 18 hr |
| Mar 24, 2:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 24, 7:02 AM CDT | Special Weather Statement | TSA | 43 min |
| Mar 25, 3:23 AM CDT | Dense Fog Advisory | TSA | 8 hr |
| Mar 28, 8:46 AM CDT | Special Weather Statement | TSA | 44 min |
| Apr 12, 3:34 AM CDT | Wind Advisory | TSA | 19 hr |
| Apr 12, 1:19 PM CDT | Freeze Warning | TSA | 20 hr |
| Apr 12, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 2:22 PM CDT | Freeze Warning | TSA | 19 hr |
| Apr 14, 2:39 PM CDT | Freeze Warning | TSA | 18 hr |
| Apr 17, 1:54 PM CDT | Freeze Warning | TSA | 19 hr |
| Apr 20, 5:30 PM CDT | Special Weather Statement | TSA | 45 min |
| Apr 20, 5:34 PM CDT | Severe Thunderstorm Warning | TSA | 56 min |
| Apr 20, 6:25 PM CDT | Severe Thunderstorm Warning | TSA | 50 min |
| Apr 22, 8:53 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 24, 3:44 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 24, 6:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 24, 7:03 PM CDT | Severe Thunderstorm Warning | TSA | 42 min |
| Apr 24, 7:40 PM CDT | Severe Thunderstorm Warning | TSA | 50 min |
| Apr 24, 8:07 PM CDT | Severe Thunderstorm Warning | TSA | 68 min |
| Apr 28, 1:55 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 28, 3:18 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 28, 6:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 6:37 PM CDT | Severe Thunderstorm Warning | TSA | 53 min |
| Apr 28, 7:02 PM CDT | Severe Thunderstorm Warning | TSA | 58 min |
| Apr 28, 7:37 PM CDT | Severe Thunderstorm Warning | TSA | 53 min |
| May 4, 8:55 AM CDT | Severe Thunderstorm Warning | TSA | 65 min |
| May 4, 9:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 4, 9:18 AM CDT | Severe Thunderstorm Warning | TSA | 57 min |
| May 4, 9:57 AM CDT | Severe Thunderstorm Warning | TSA | 63 min |
| May 4, 10:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 10:59 AM CDT | Severe Thunderstorm Warning | TSA | 61 min |
| May 4, 1:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 4, 2:32 PM CDT | Tornado Watch | SPC | 9 hr |
| May 4, 6:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 4, 7:34 PM CDT | Severe Thunderstorm Warning | TSA | 56 min |
| May 4, 8:08 PM CDT | Special Weather Statement | TSA | 37 min |
| May 4, 8:19 PM CDT | Severe Thunderstorm Warning | TSA | 41 min |
| May 8, 2:16 PM CDT | Frost Advisory | TSA | 18 hr |
| May 14, 1:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 2:33 PM CDT | Flash Flood Watch | TSA | 28 hr |
| May 15, 4:49 AM CDT | Special Weather Statement | TSA | 41 min |
| May 22, 8:26 AM CDT | Special Weather Statement | TSA | 49 min |
| May 22, 9:11 AM CDT | Special Weather Statement | TSA | 64 min |
| May 22, 10:15 AM CDT | Special Weather Statement | TSA | 30 min |
| May 24, 2:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 4:15 PM CDT | Special Weather Statement | TSA | 45 min |
| May 25, 2:57 AM CDT | Flash Flood Watch | TSA | 25 hr |
| May 25, 5:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 25, 6:14 PM CDT | Tornado Watch | SPC | 5 hr |
| May 25, 7:00 PM CDT | Tornado Warning | TSA | 45 min |
| May 25, 7:10 PM CDT | Severe Thunderstorm Warning | TSA | 35 min |
| May 25, 7:40 PM CDT | Tornado Warning | TSA | 50 min |
| May 25, 7:45 PM CDT | Severe Thunderstorm Warning | TSA | 60 min |
| May 25, 8:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 25, 8:38 PM CDT | Severe Thunderstorm Warning | TSA | 52 min |
| May 25, 9:46 PM CDT | Areal Flood Warning | TSA | 6 hr |
| May 27, 11:33 PM CDT | Dense Fog Advisory | TSA | 9 hr |
| Jun 4, 5:30 AM CDT | Special Weather Statement | TSA | 45 min |
| Jun 4, 6:15 AM CDT | Special Weather Statement | TSA | 45 min |
| Jun 8, 2:43 PM CDT | Wind Advisory | TSA | 40 hr |
| Jun 21, 6:12 AM CDT | Dense Fog Advisory | TSA | 3 hr |
| Jun 21, 4:01 PM CDT | Special Weather Statement | TSA | 29 min |
| Jun 30, 2:36 AM CDT | Heat Advisory | TSA | 65 hr |
| Jul 2, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 3:39 AM CDT | Special Weather Statement | TSA | 36 min |
| Jul 4, 7:05 PM CDT | Areal Flood Advisory | TSA | 3 hr |
| Jul 9, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jul 9, 7:16 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 9, 9:27 AM CDT | Special Weather Statement | TSA | 63 min |
| Jul 9, 9:44 AM CDT | Severe Thunderstorm Warning | TSA | 46 min |
| Jul 11, 1:05 PM CDT | Heat Advisory | TSA | 8 hr |
| Jul 11, 3:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 6:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 11, 7:44 PM CDT | Severe Thunderstorm Warning | TSA | 46 min |
| Jul 11, 8:27 PM CDT | Severe Thunderstorm Warning | TSA | 33 min |
| Jul 11, 8:55 PM CDT | Severe Thunderstorm Warning | TSA | 35 min |
| Jul 16, 11:59 PM CDT | Special Weather Statement | TSA | 46 min |
| Jul 22, 1:26 AM CDT | Areal Flood Advisory | TSA | 3 hr |
| Jul 22, 2:36 AM CDT | Flash Flood Warning | TSA | 3 hr |
| Jul 22, 5:37 PM CDT | Special Weather Statement | TSA | 23 min |
| Jul 27, 6:14 PM CDT | Areal Flood Advisory | TSA | 3 hr |
| Jul 28, 3:04 PM CDT | Flood Watch | TSA | 37 hr |
| Jul 30, 1:16 AM CDT | Flash Flood Warning | TSA | 3 hr |
| Aug 10, 4:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 11, 11:33 AM CDT | Flash Flood Watch | TSA | 16 hr |
| Aug 15, 2:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 5:42 AM CDT | Dense Fog Advisory | TSA | 3 hr |
| Aug 29, 3:14 AM CDT | Flash Flood Watch | TSA | 28 hr |
| Aug 29, 10:27 AM CDT | Special Weather Statement | TSA | 48 min |
| Aug 31, 4:18 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 3, 1:47 AM CDT | Dense Fog Advisory | TSA | 7 hr |
| Sep 10, 1:21 AM CDT | Areal Flood Advisory | TSA | 3 hr |
| Sep 13, 12:27 AM CDT | Dense Fog Advisory | TSA | 9 hr |
| Sep 23, 9:12 PM CDT | Dense Fog Advisory | TSA | 13 hr |
| Sep 25, 7:49 AM CDT | Dense Fog Advisory | TSA | 2 hr |
| Oct 15, 2:49 AM CDT | Frost Advisory | TSA | 30 hr |
| Oct 16, 3:07 PM CDT | Fire Weather Watch | TSA | 13 hr |
| Oct 17, 4:01 AM CDT | Red Flag Warning | TSA | 15 hr |
| Oct 17, 4:03 AM CDT | Wind Advisory | TSA | 13 hr |
| Oct 21, 4:06 AM CDT | Dense Fog Advisory | TSA | 5 hr |
| Oct 28, 2:57 AM CDT | Flood Watch | TSA | 34 hr |
| Oct 29, 2:15 PM CDT | Freeze Warning | TSA | 19 hr |
| Nov 1, 12:51 PM CST | Freeze Warning | TSA | 19 hr |
| Nov 6, 5:26 AM CST | Dense Fog Advisory | TSA | 5 hr |
| Nov 10, 1:37 PM CST | Freeze Warning | TSA | 19 hr |
| Nov 12, 1:18 PM CST | Freeze Warning | TSA | 20 hr |
| Nov 14, 4:46 PM CST | Mesoscale Discussion | SPC | 29 min |
| Nov 14, 5:14 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 14, 7:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 14, 7:34 PM CST | Special Weather Statement | TSA | 41 min |
| Nov 14, 7:59 PM CST | Severe Thunderstorm Warning | TSA | 46 min |
| Nov 14, 8:21 PM CST | Special Weather Statement | TSA | 24 min |
| Nov 14, 8:43 PM CST | Severe Thunderstorm Warning | TSA | 29 min |
| Nov 14, 8:58 PM CST | Special Weather Statement | TSA | 47 min |
| Nov 14, 9:49 PM CST | Severe Thunderstorm Warning | TSA | 41 min |
| Nov 18, 1:54 PM CST | Wind Advisory | TSA | 28 hr |
| Nov 23, 12:10 AM CST | Dense Fog Advisory | TSA | 9 hr |
| Nov 24, 8:20 PM CST | Mesoscale Discussion | SPC | 55 min |
| Nov 24, 8:39 PM CST | Severe Thunderstorm Warning | TSA | 51 min |
| Nov 26, 1:42 AM CST | Dense Fog Advisory | TSA | 8 hr |
| Dec 12, 3:41 AM CST | Winter Weather Advisory | TSA | 42 hr |
| Dec 12, 9:20 PM CST | Winter Storm Watch | TSA | 6 hr |
| Dec 13, 3:01 AM CST | Winter Storm Warning | TSA | 17 hr |
| Dec 13, 12:00 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 22, 8:32 PM CST | Wind Advisory | TSA | 21 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 | 33 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 23 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 6 |
| Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 9 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| 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 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.