Alert archive / Missouri / Benton County
Weather alerts in Benton County, Missouri, 2009
190 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 190
- Warnings
- 81
- Watches
- 40
- Advisories
- 33
- Busiest month
- June63 alerts
- Busiest day
- June 9, 200911 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 Benton County in 2009 had a tornado report inside them.
Benton County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 22 | 9 | 59% | 13 | 92% | 43 min |
| Flash flood warnings | 21 | 13 | 38% | 10 | 100% | 294 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Springfield, MO: tornado warnings | 125 | 17 | 86% | 48 | 65% | 19 min |
| NWS Springfield, MO: severe thunderstorm warnings | 398 | 172 | 57% | 548 | 78% | 31 min |
| NWS Springfield, MO: flash flood warnings | 190 | 119 | 37% | 379 | 92% | 246 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 14, 3:24 AM CST | Wind Chill Advisory | SGF | 33 hr |
| Jan 25, 4:32 AM CST | Winter Storm Watch | SGF | 23 hr |
| Jan 26, 3:19 AM CST | Winter Storm Warning | SGF | 50 hr |
| Jan 26, 3:19 AM CST | Winter Weather Advisory | SGF | 15 hr |
| Feb 9, 8:43 AM CST | Mesoscale Discussion | SPC | 32 min |
| Feb 9, 10:28 AM CST | Mesoscale Discussion | SPC | 62 min |
| Feb 9, 3:32 PM CST | Flash Flood Watch | SGF | 44 hr |
| Feb 10, 2:18 PM CST | Wind Advisory | SGF | 23 hr |
| Feb 10, 10:35 PM CST | Flash Flood Warning | SGF | 7 hr |
| Feb 11, 5:10 AM CST | Areal Flood Advisory | SGF | 8 hr |
| Feb 11, 7:25 AM CST | Areal Flood Warning | SGF | 7 hr |
| Feb 26, 12:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Feb 26, 4:51 PM CST | Severe Thunderstorm Warning | SGF | 54 min |
| Feb 26, 5:05 PM CST | Severe Thunderstorm Warning | SGF | 55 min |
| Feb 26, 5:19 PM CST | Severe Thunderstorm Watch | SPC | 7 hr |
| Feb 27, 3:20 PM CST | Winter Weather Advisory | SGF | 29 hr |
| Feb 28, 10:44 AM CST | Winter Storm Warning | SGF | 9 hr |
| Mar 5, 9:09 AM CST | Wind Advisory | SGF | 9 hr |
| Mar 7, 10:14 AM CST | Wind Advisory | SGF | 5 hr |
| Mar 8, 5:56 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Mar 8, 6:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 8, 7:34 AM CDT | Severe Thunderstorm Warning | SGF | 56 min |
| Mar 22, 3:49 PM CDT | Wind Advisory | SGF | 48 hr |
| Mar 24, 7:03 AM CDT | Severe Thunderstorm Warning | SGF | 57 min |
| Mar 24, 7:34 AM CDT | Flash Flood Warning | SGF | 6 hr |
| Mar 24, 7:53 AM CDT | Tornado Warning | SGF | 23 min |
| Mar 24, 9:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Mar 24, 10:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 24, 10:42 AM CDT | Severe Thunderstorm Warning | SGF | 63 min |
| Mar 24, 10:48 AM CDT | Tornado Warning | SGF | 27 min |
| Mar 24, 11:32 AM CDT | Severe Thunderstorm Warning | SGF | 28 min |
| Mar 24, 1:49 PM CDT | Areal Flood Warning | SGF | 6 hr |
| Mar 26, 11:48 AM CDT | Winter Storm Watch | SGF | 28 hr |
| Mar 27, 3:24 PM CDT | Winter Storm Warning | SGF | 29 hr |
| Mar 27, 3:24 PM CDT | Winter Weather Advisory | SGF | 34 hr |
| Mar 28, 2:44 PM CDT | Freeze Warning | SGF | 18 hr |
| Mar 31, 3:27 PM CDT | Frost Advisory | SGF | 18 hr |
| Apr 2, 3:39 PM CDT | Freeze Warning | SGF | 17 hr |
| Apr 3, 9:47 AM CDT | Freeze Watch | SGF | 53 hr |
| Apr 5, 2:33 AM CDT | Freeze Watch | SGF | 25 hr |
| Apr 5, 2:33 AM CDT | Freeze Warning | SGF | 30 hr |
| Apr 5, 2:40 PM CDT | Freeze Warning | SGF | 42 hr |
| Apr 7, 3:13 AM CDT | Frost Advisory | SGF | 29 hr |
| Apr 9, 6:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 10, 3:27 AM CDT | Frost Advisory | SGF | 29 hr |
| Apr 14, 3:52 AM CDT | Frost Advisory | SGF | 24 hr |
| Apr 21, 10:22 AM CDT | Red Flag Warning | SGF | 9 hr |
| Apr 23, 1:36 PM CDT | Red Flag Warning | SGF | 5 hr |
| Apr 26, 3:53 AM CDT | Wind Advisory | SGF | 12 hr |
| Apr 27, 11:00 AM CDT | Flash Flood Warning | SGF | 6 hr |
| Apr 27, 12:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 27, 12:47 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 4:57 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Apr 27, 10:59 PM CDT | Areal Flood Warning | SGF | 18 hr |
| Apr 29, 3:06 AM CDT | Flash Flood Watch | SGF | 4 days |
| Apr 29, 5:28 PM CDT | Flash Flood Warning | SGF | 4 hr |
| Apr 29, 9:39 PM CDT | Areal Flood Warning | SGF | 12 hr |
| Apr 30, 10:02 AM CDT | Areal Flood Warning | SGF | 6 hr |
| May 7, 5:26 AM CDT | Dense Fog Advisory | SGF | 4 hr |
| May 7, 9:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 7, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 8, 4:55 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 8, 5:31 AM CDT | Severe Thunderstorm Warning | SGF | 44 min |
| May 8, 6:37 AM CDT | Flash Flood Warning | SGF | 6 hr |
| May 8, 6:54 AM CDT | Severe Thunderstorm Warning | SGF | 66 min |
| May 8, 7:58 AM CDT | Severe Thunderstorm Warning | SGF | 62 min |
| May 8, 12:57 PM CDT | Areal Flood Warning | SGF | 24 hr |
| May 12, 3:34 PM CDT | Flash Flood Watch | SGF | 35 hr |
| May 13, 1:52 PM CDT | Mesoscale Discussion | SPC | 23 min |
| May 13, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 13, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 13, 8:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 13, 8:45 PM CDT | Severe Thunderstorm Warning | SGF | 90 min |
| May 15, 2:59 PM CDT | Flash Flood Watch | SGF | 13 hr |
| May 15, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 29, 3:16 AM CDT | Dense Fog Advisory | SGF | 4 hr |
| Jun 2, 3:29 AM CDT | Flash Flood Watch | SGF | 23 hr |
| Jun 2, 2:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 12:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 7, 5:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 7, 11:31 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 8, 3:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 9, 9:02 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 11:11 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 12:02 PM CDT | Severe Thunderstorm Warning | SGF | 58 min |
| Jun 9, 12:17 PM CDT | Severe Thunderstorm Warning | SGF | 43 min |
| Jun 9, 12:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 9, 1:31 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 9, 2:28 PM CDT | Severe Thunderstorm Warning | SGF | 47 min |
| Jun 9, 2:30 PM CDT | Severe Thunderstorm Warning | SGF | 45 min |
| Jun 9, 3:02 PM CDT | Tornado Warning | SGF | 43 min |
| Jun 9, 3:08 PM CDT | Severe Thunderstorm Warning | SGF | 37 min |
| Jun 9, 4:26 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Jun 9, 9:13 PM CDT | Flash Flood Warning | SGF | 11 hr |
| Jun 9, 9:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 3:33 AM CDT | Mesoscale Discussion | SPC | 27 min |
| Jun 10, 11:47 AM CDT | Flash Flood Watch | SGF | 18 hr |
| Jun 10, 12:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 10, 4:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 10, 5:15 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 10, 6:03 PM CDT | Tornado Warning | SGF | 57 min |
| Jun 10, 6:54 PM CDT | Tornado Warning | SGF | 46 min |
| Jun 10, 7:09 PM CDT | Tornado Warning | SGF | 47 min |
| Jun 10, 7:34 PM CDT | Flash Flood Warning | SGF | 4 hr |
| Jun 10, 11:48 PM CDT | Areal Flood Warning | SGF | 9 hr |
| Jun 13, 2:33 AM CDT | Dense Fog Advisory | SGF | 5 hr |
| Jun 15, 3:55 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 15, 5:10 AM CDT | Areal Flood Advisory | SGF | 6 hr |
| Jun 15, 5:33 AM CDT | Severe Thunderstorm Warning | SGF | 42 min |
| Jun 15, 6:11 AM CDT | Flash Flood Warning | SGF | 6 hr |
| Jun 15, 6:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 15, 11:53 AM CDT | Flash Flood Warning | SGF | 3 hr |
| Jun 15, 12:52 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 15, 3:02 PM CDT | Areal Flood Warning | SGF | 18 hr |
| Jun 15, 3:35 PM CDT | Flash Flood Watch | SGF | 20 hr |
| Jun 15, 10:49 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 15, 11:05 PM CDT | Severe Thunderstorm Warning | SGF | 85 min |
| Jun 15, 11:13 PM CDT | Flash Flood Warning | SGF | 12 hr |
| Jun 16, 2:30 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 16, 3:53 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 16, 4:52 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 16, 5:04 AM CDT | Severe Thunderstorm Warning | SGF | 41 min |
| Jun 16, 6:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 16, 10:56 AM CDT | Areal Flood Warning | SGF | 9 hr |
| Jun 16, 4:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 16, 8:00 PM CDT | Areal Flood Warning | SGF | 12 hr |
| Jun 16, 10:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 17, 7:44 AM CDT | Areal Flood Warning | SGF | 30 hr |
| Jun 17, 7:16 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 19, 7:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 19, 8:40 PM CDT | Severe Thunderstorm Warning | SGF | 50 min |
| Jun 22, 3:20 AM CDT | Heat Advisory | SGF | 19 hr |
| Jun 23, 4:00 AM CDT | Heat Advisory | SGF | 42 hr |
| Jun 23, 9:46 AM CDT | Excessive Heat Warning | SGF | 36 hr |
| Jun 24, 3:59 PM CDT | Flash Flood Warning | SGF | 4 hr |
| Jun 25, 4:05 AM CDT | Heat Advisory | SGF | 65 hr |
| Jun 27, 5:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 27, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 7:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 2:53 AM CDT | Dense Fog Advisory | SGF | 4 hr |
| Jul 11, 6:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 12, 7:54 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 12, 7:58 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 16, 1:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 16, 3:13 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 25, 2:17 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 28, 3:57 PM CDT | Flash Flood Warning | SGF | 3 hr |
| Aug 10, 1:50 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 10, 3:24 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Aug 19, 3:51 PM CDT | Flash Flood Watch | SGF | 12 hr |
| Aug 29, 3:02 AM CDT | Dense Fog Advisory | SGF | 6 hr |
| Sep 4, 10:46 AM CDT | Flash Flood Warning | SGF | 6 hr |
| Sep 5, 10:03 PM CDT | Dense Fog Advisory | SGF | 12 hr |
| Sep 6, 8:39 PM CDT | Dense Fog Advisory | SGF | 13 hr |
| Sep 21, 3:25 AM CDT | Flash Flood Watch | SGF | 24 hr |
| Sep 21, 4:00 AM CDT | Dense Fog Advisory | SGF | 5 hr |
| Sep 21, 1:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 21, 1:55 PM CDT | Severe Thunderstorm Warning | SGF | 40 min |
| Sep 21, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 21, 2:30 PM CDT | Severe Thunderstorm Warning | SGF | 46 min |
| Oct 1, 3:16 PM CDT | Severe Thunderstorm Warning | SGF | 59 min |
| Oct 7, 4:00 AM CDT | Flash Flood Watch | SGF | 47 hr |
| Oct 8, 8:31 AM CDT | Flash Flood Warning | SGF | 4 hr |
| Oct 8, 12:46 PM CDT | Flash Flood Warning | SGF | 12 hr |
| Oct 9, 12:58 AM CDT | Areal Flood Warning | SGF | 9 hr |
| Oct 9, 10:00 AM CDT | Areal Flood Warning | SGF | 24 hr |
| Oct 10, 9:58 AM CDT | Areal Flood Warning | SGF | 24 hr |
| Oct 16, 1:38 PM CDT | Freeze Watch | SGF | 13 hr |
| Oct 17, 2:33 AM CDT | Frost Advisory | SGF | 30 hr |
| Oct 17, 2:35 PM CDT | Freeze Warning | SGF | 18 hr |
| Oct 22, 4:49 PM CDT | Flash Flood Warning | SGF | 6 hr |
| Oct 22, 10:58 PM CDT | Areal Flood Warning | SGF | 11 hr |
| Oct 23, 2:52 AM CDT | Frost Advisory | SGF | 30 hr |
| Oct 28, 3:30 PM CDT | Flash Flood Watch | SGF | 36 hr |
| Oct 30, 1:16 AM CDT | Areal Flood Warning | SGF | 5 hr |
| Oct 30, 2:49 AM CDT | Areal Flood Warning | SGF | 15 hr |
| Oct 30, 6:00 PM CDT | Areal Flood Warning | SGF | 18 hr |
| Nov 4, 3:36 AM CST | Frost Advisory | SGF | 28 hr |
| Nov 15, 12:46 PM CST | Flood Watch | SGF | 18 hr |
| Nov 15, 12:47 PM CST | Flash Flood Warning | SGF | 3 hr |
| Nov 15, 3:45 PM CST | Areal Flood Warning | SGF | 6 hr |
| Nov 15, 8:47 PM CST | Areal Flood Warning | SGF | 12 hr |
| Nov 16, 9:35 AM CST | Areal Flood Advisory | SGF | 23 hr |
| Dec 8, 3:03 AM CST | Winter Weather Advisory | SGF | 6 hr |
| Dec 8, 2:54 PM CST | Wind Advisory | SGF | 21 hr |
| Dec 23, 3:00 AM CST | Winter Storm Watch | SGF | 25 hr |
| Dec 23, 2:56 PM CST | Winter Storm Warning | SGF | 43 hr |
| Dec 23, 3:06 PM CST | Flash Flood Warning | SGF | 10 hr |
| Dec 24, 8:18 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 29, 3:22 PM CST | Winter Weather Advisory | SGF | 19 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 | 6 |
| Severe Thunderstorm Watch | 18 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 36 |
| Flooding | |
| Areal Flood Warning | 20 |
| Flash Flood Warning | 21 |
| Flash Flood Watch | 11 |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 3 |
| Frost Advisory | 7 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.