Alert archive / Arkansas / Grant County
Weather alerts in Grant County, Arkansas, 2020
125 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grant County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 125
- Warnings
- 38
- Watches
- 21
- Advisories
- 21
- Busiest month
- April23 alerts
- Busiest day
- January 11, 20207 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Grant County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 26 | 14 | 46% | 9 | 78% | 15 min |
| Flash flood warnings | 8 | 4 | 50% | 4 | 100% | 59 min |
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, 4:53 AM CST | Mesoscale Discussion | SPC | 2 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, 10:40 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 10:44 PM CST | Severe Thunderstorm Warning | LZK | 61 min |
| Jan 10, 11:44 PM CST | Severe Thunderstorm Warning | LZK | 46 min |
| Jan 10, 11:51 PM CST | Severe Thunderstorm Warning | LZK | 54 min |
| Jan 11, 12:32 AM CST | Flash Flood Warning | LZK | 3 hr |
| Jan 11, 12:33 AM CST | Special Weather Statement | LZK | 42 min |
| Jan 11, 12:39 AM CST | Severe Thunderstorm Warning | LZK | 51 min |
| Jan 14, 6:24 PM CST | Dense Fog Advisory | LZK | 15 hr |
| Jan 15, 9:03 AM CST | Dense Fog Advisory | LZK | 117 min |
| Jan 15, 3:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 26, 10:52 PM CST | Dense Fog Advisory | LZK | 11 hr |
| Jan 27, 10:02 AM CST | Dense Fog Advisory | LZK | 118 min |
| Jan 27, 11:31 PM CST | Dense Fog Advisory | LZK | 12 hr |
| Feb 10, 3:33 AM CST | Flash Flood Watch | LZK | 62 hr |
| Feb 18, 9:13 AM CST | Flash Flood Warning | LZK | 115 min |
| Mar 11, 9:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 12, 3:44 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 12, 8:43 PM CDT | Severe Thunderstorm Warning | LZK | 21 min |
| Mar 12, 9:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Mar 17, 3:49 AM CDT | Dense Fog Advisory | LZK | 5 hr |
| Mar 19, 2:24 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 19, 9:50 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 19, 11:30 PM CDT | Special Weather Statement | LZK | 45 min |
| Mar 24, 2:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 12:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 2:10 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 28, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| 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, 9:19 AM CDT | Special Weather Statement | LZK | 26 min |
| Apr 12, 9:21 AM CDT | Special Weather Statement | LZK | 24 min |
| 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, 7:10 PM CDT | Severe Thunderstorm Warning | LZK | 50 min |
| Apr 12, 7:45 PM CDT | Severe Thunderstorm Warning | LZK | 45 min |
| Apr 12, 7:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 2:38 PM CDT | Frost Advisory | LZK | 18 hr |
| Apr 22, 3:35 PM CDT | Flash Flood Watch | LZK | 10 hr |
| Apr 22, 10:00 PM CDT | Special Weather Statement | LZK | 45 min |
| Apr 24, 8:31 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 24, 10:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 24, 11:35 PM CDT | Special Weather Statement | LZK | 55 min |
| Apr 28, 6:41 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Apr 28, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 10:32 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| Apr 28, 10:46 PM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Apr 28, 11:14 PM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| Apr 28, 11:24 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Apr 28, 11:55 PM CDT | Severe Thunderstorm Warning | LZK | 65 min |
| May 8, 5:12 AM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| May 16, 1:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 11:46 PM CDT | Flash Flood Warning | LZK | 3 hr |
| May 22, 12:16 AM CDT | Severe Thunderstorm Warning | LZK | 31 min |
| May 22, 12:51 AM CDT | Special Weather Statement | LZK | 39 min |
| May 22, 12:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 22, 7:34 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 22, 11:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 8:14 PM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 25, 9:10 PM CDT | Severe Thunderstorm Warning | LZK | 12 min |
| Jun 4, 1:52 AM CDT | Special Weather Statement | LZK | 23 min |
| Jun 5, 10:38 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 9:16 PM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Jun 5, 10:12 PM CDT | Special Weather Statement | LZK | 48 min |
| Jun 5, 10:49 PM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| Jun 7, 2:50 AM CDT | Flash Flood Watch | LZK | 49 hr |
| Jun 8, 1:30 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Jun 9, 8:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 21, 9:14 PM CDT | Special Weather Statement | LZK | 31 min |
| Jun 23, 11:06 AM CDT | Severe Thunderstorm Warning | LZK | 24 min |
| Jun 23, 11:30 AM CDT | Severe Thunderstorm Warning | LZK | 45 min |
| Jun 23, 12:01 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 6:20 PM CDT | Special Weather Statement | LZK | 25 min |
| Jun 28, 6:42 PM CDT | Special Weather Statement | LZK | 48 min |
| Jun 28, 7:14 PM CDT | Special Weather Statement | LZK | 31 min |
| Jun 29, 3:15 PM CDT | Severe Thunderstorm Warning | LZK | 45 min |
| Jun 29, 3:57 PM CDT | Special Weather Statement | LZK | 48 min |
| Jun 30, 2:22 PM CDT | Heat Advisory | LZK | 53 hr |
| Jul 2, 4:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 10:20 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Jul 9, 10:46 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 9, 12:13 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 10, 4:11 AM CDT | Heat Advisory | LZK | 15 hr |
| Jul 10, 9:19 PM CDT | Heat Advisory | LZK | 23 hr |
| Jul 13, 2:32 PM CDT | Heat Advisory | LZK | 29 hr |
| Jul 14, 2:43 PM CDT | Heat Advisory | LZK | 29 hr |
| Jul 15, 2:22 PM CDT | Heat Advisory | LZK | 30 hr |
| Jul 30, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 10:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 10, 3:22 AM CDT | Heat Advisory | LZK | 17 hr |
| Aug 11, 4:10 PM CDT | Severe Thunderstorm Warning | LZK | 35 min |
| Aug 11, 4:24 PM CDT | Severe Thunderstorm Warning | LZK | 36 min |
| Aug 14, 6:27 AM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| Aug 14, 7:14 AM CDT | Special Weather Statement | LZK | 46 min |
| Aug 26, 3:11 AM CDT | Flash Flood Watch | LZK | 50 hr |
| Aug 26, 4:38 PM CDT | Tropical Storm Warning | LZK | 30 hr |
| Aug 27, 6:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 27, 7:47 AM CDT | Tornado Watch | SPC | 8 hr |
| Aug 27, 1:54 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 27, 3:47 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 27, 4:03 PM CDT | Flash Flood Warning | LZK | 4 hr |
| Aug 28, 2:43 PM CDT | Heat Advisory | LZK | 29 hr |
| Aug 29, 11:17 AM CDT | Excessive Heat Warning | LZK | 9 hr |
| Aug 29, 3:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 31, 6:20 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 31, 9:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 31, 9:53 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Aug 31, 2:49 PM CDT | Flash Flood Watch | LZK | 60 hr |
| Sep 1, 2:56 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Sep 1, 3:17 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 1, 3:39 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Sep 1, 5:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Sep 2, 10:11 AM CDT | Special Weather Statement | LZK | 34 min |
| Nov 1, 8:22 PM CST | Frost Advisory | LZK | 12 hr |
| Nov 21, 9:12 PM CST | Dense Fog Advisory | LZK | 6 hr |
| Nov 26, 1:49 AM CST | Dense Fog Advisory | LZK | 8 hr |
| Nov 29, 2:27 PM CST | Freeze Warning | LZK | 19 hr |
| Nov 30, 2:30 PM CST | Freeze Warning | LZK | 19 hr |
| Dec 19, 9:29 PM CST | Dense Fog Advisory | LZK | 11 hr |
| Dec 23, 3:46 PM CST | Mesoscale Discussion | SPC | 89 min |
| Dec 30, 3:56 AM CST | Flash Flood Watch | LZK | 44 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 | 26 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 16 |
| Flooding | |
| Flash Flood Warning | 8 |
| Flash Flood Watch | 7 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
| Tropical | |
| Tropical Storm Warning | 1 |
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.