Alert archive / Arkansas / Polk County
Weather alerts in Polk County, Arkansas, 2010
100 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Polk County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 100
- Warnings
- 48
- Watches
- 11
- Advisories
- 3
- Busiest month
- May35 alerts
- Busiest day
- May 20, 201012 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 6 tornado warnings covering Polk County in 2010 had a tornado report inside them.
Polk County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 27 | 5 | 81% | 3 | 100% | 23 min |
| Flash flood warnings | 15 | 8 | 47% | 3 | 100% | 26 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Little Rock, AR: tornado warnings | 87 | 11 | 87% | 19 | 79% | 25 min |
| NWS Little Rock, AR: severe thunderstorm warnings | 444 | 173 | 61% | 295 | 81% | 19 min |
| NWS Little Rock, AR: flash flood warnings | 138 | 47 | 66% | 71 | 87% | 62 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 19, 10:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 20, 6:17 PM CST | Mesoscale Discussion | SPC | 88 min |
| Jan 20, 7:31 PM CST | Severe Thunderstorm Warning | LZK | 29 min |
| Jan 20, 9:20 PM CST | Mesoscale Discussion | SPC | 55 min |
| Jan 20, 11:03 PM CST | Mesoscale Discussion | SPC | 87 min |
| Mar 10, 11:39 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 10, 3:13 PM CST | Mesoscale Discussion | SPC | 92 min |
| Mar 10, 5:55 PM CST | Severe Thunderstorm Warning | LZK | 50 min |
| Apr 2, 9:35 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Apr 2, 8:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 23, 1:13 PM CDT | Severe Thunderstorm Warning | LZK | 34 min |
| Apr 23, 2:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 30, 1:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 30, 1:46 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 30, 4:16 PM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Apr 30, 5:24 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Apr 30, 5:32 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| Apr 30, 5:40 PM CDT | Severe Thunderstorm Warning | LZK | 50 min |
| Apr 30, 5:53 PM CDT | Mesoscale Discussion | SPC | 37 min |
| Apr 30, 6:13 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Apr 30, 6:24 PM CDT | Tornado Watch | SPC | 3 hr |
| Apr 30, 7:00 PM CDT | Tornado Warning | LZK | 30 min |
| Apr 30, 8:44 PM CDT | Tornado Warning | LZK | 31 min |
| Apr 30, 9:14 PM CDT | Tornado Warning | LZK | 31 min |
| May 1, 6:36 PM CDT | Tornado Warning | LZK | 24 min |
| May 1, 7:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 1, 7:52 PM CDT | Tornado Warning | LZK | 23 min |
| May 10, 9:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 10, 10:06 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| May 14, 3:43 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| May 14, 4:28 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| May 14, 4:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| May 14, 4:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 14, 6:04 PM CDT | Severe Thunderstorm Warning | LZK | 56 min |
| May 14, 6:28 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| May 14, 7:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 14, 7:55 PM CDT | Flash Flood Warning | LZK | 3 hr |
| May 14, 8:11 PM CDT | Flash Flood Warning | LZK | 5 hr |
| May 16, 12:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 16, 1:28 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 16, 1:34 PM CDT | Severe Thunderstorm Warning | LZK | 56 min |
| May 16, 5:48 PM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| May 16, 6:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 19, 5:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| May 19, 7:32 PM CDT | Tornado Watch | SPC | 6 hr |
| May 19, 9:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 19, 10:39 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| May 19, 10:47 PM CDT | Tornado Warning | LZK | 43 min |
| May 19, 11:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 19, 11:31 PM CDT | Severe Thunderstorm Warning | LZK | 59 min |
| May 20, 12:22 AM CDT | Flash Flood Warning | LZK | 6 hr |
| May 20, 12:30 AM CDT | Severe Thunderstorm Warning | LZK | 60 min |
| May 20, 1:16 AM CDT | Severe Thunderstorm Warning | LZK | 59 min |
| May 20, 1:54 AM CDT | Mesoscale Discussion | SPC | 66 min |
| May 20, 2:05 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 20, 9:14 AM CDT | Flash Flood Warning | LZK | 2 hr |
| Jun 11, 1:57 AM CDT | Flash Flood Warning | LZK | 4 hr |
| Jun 11, 6:07 AM CDT | Flash Flood Warning | LZK | 2 hr |
| Jun 16, 4:18 PM CDT | Flash Flood Warning | LZK | 47 min |
| Jun 24, 3:23 PM CDT | Severe Thunderstorm Warning | LZK | 37 min |
| Jun 24, 4:01 PM CDT | Flash Flood Warning | LZK | 119 min |
| Jun 24, 4:01 PM CDT | Severe Thunderstorm Warning | LZK | 29 min |
| Jun 28, 1:08 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Jun 28, 1:27 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| Jun 29, 3:23 AM CDT | Flash Flood Warning | LZK | 4 hr |
| Jul 11, 1:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 12, 2:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 16, 6:32 PM CDT | Flash Flood Warning | LZK | 58 min |
| Jul 16, 7:59 PM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| Jul 25, 5:54 PM CDT | Severe Thunderstorm Warning | LZK | 36 min |
| Jul 25, 6:35 PM CDT | Special Weather Statement | LZK | 30 min |
| Jul 25, 7:23 PM CDT | Flash Flood Warning | LZK | 112 min |
| Aug 5, 2:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Aug 8, 5:43 PM CDT | Areal Flood Advisory | LZK | 107 min |
| Aug 11, 12:51 PM CDT | Special Weather Statement | LZK | 39 min |
| Aug 11, 12:58 PM CDT | Flash Flood Warning | LZK | 2 hr |
| Aug 15, 4:27 PM CDT | Special Weather Statement | LZK | 28 min |
| Aug 15, 5:57 PM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| Aug 15, 6:15 PM CDT | Flash Flood Warning | LZK | 105 min |
| Sep 1, 2:00 PM CDT | Areal Flood Advisory | LZK | 2 hr |
| Sep 8, 9:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 8, 10:12 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 11, 1:32 PM CDT | Special Weather Statement | LZK | 58 min |
| Sep 11, 2:05 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Sep 11, 3:09 PM CDT | Special Weather Statement | TSA | 36 min |
| Sep 11, 3:46 PM CDT | Special Weather Statement | LZK | 59 min |
| Sep 18, 3:44 PM CDT | Special Weather Statement | LZK | 31 min |
| Sep 18, 4:15 PM CDT | Special Weather Statement | LZK | 30 min |
| Sep 18, 4:42 PM CDT | Special Weather Statement | LZK | 28 min |
| Sep 18, 5:09 PM CDT | Areal Flood Advisory | LZK | 111 min |
| Oct 11, 9:33 PM CDT | Special Weather Statement | TSA | 27 min |
| Oct 24, 1:51 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 24, 2:23 PM CDT | Severe Thunderstorm Warning | LZK | 37 min |
| Oct 26, 2:52 AM CDT | Special Weather Statement | LZK | 28 min |
| Oct 26, 4:23 AM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| Nov 22, 3:19 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 23, 5:50 PM CST | Special Weather Statement | LZK | 45 min |
| Dec 30, 8:52 PM CST | Mesoscale Discussion | SPC | 113 min |
| Dec 31, 7:29 AM CST | Tornado Watch | SPC | 8 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 | 27 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Warning | 15 |
| Areal Flood Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.