Alert archive / Missouri / Grundy County
Weather alerts in Grundy County, Missouri, 2011
148 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grundy County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 148
- Warnings
- 43
- Watches
- 27
- Advisories
- 31
- Busiest month
- June53 alerts
- Busiest day
- June 10, 201110 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 1 tornado warnings covering Grundy County in 2011 had a tornado report inside them.
Grundy County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 32 | 18 | 44% | 18 | 83% | 17 min |
| Flash flood warnings | 2 | 1 | 50% | 3 | 100% | 151 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Kansas City, MO: tornado warnings | 56 | 18 | 68% | 29 | 83% | 18 min |
| NWS Kansas City, MO: severe thunderstorm warnings | 359 | 198 | 45% | 552 | 82% | 21 min |
| NWS Kansas City, MO: flash flood warnings | 21 | 5 | 76% | 10 | 80% | 165 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 8, 1:02 PM CST | Winter Storm Watch | EAX | 25 hr |
| Jan 9, 1:40 PM CST | Winter Weather Advisory | EAX | 38 hr |
| Jan 11, 3:26 AM CST | Wind Chill Advisory | EAX | 31 hr |
| Jan 18, 10:59 AM CST | Winter Storm Watch | EAX | 17 hr |
| Jan 18, 3:34 PM CST | Winter Weather Advisory | EAX | 42 hr |
| Jan 22, 3:49 AM CST | Winter Weather Advisory | EAX | 34 hr |
| Jan 29, 3:22 PM CST | Winter Storm Watch | EAX | 23 hr |
| Jan 30, 2:46 PM CST | Winter Storm Warning | EAX | 39 hr |
| Jan 31, 2:01 PM CST | Blizzard Warning | EAX | 38 hr |
| Feb 1, 10:36 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 3:36 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 9:30 PM CST | Wind Chill Advisory | EAX | 37 hr |
| Feb 7, 3:29 PM CST | Wind Chill Advisory | EAX | 21 hr |
| Feb 8, 3:53 PM CST | Wind Chill Advisory | EAX | 11 hr |
| Feb 9, 3:47 PM CST | Wind Chill Advisory | EAX | 19 hr |
| Feb 15, 10:07 PM CST | Dense Fog Advisory | EAX | 16 hr |
| Feb 23, 3:37 PM CST | Winter Weather Advisory | EAX | 32 hr |
| Feb 24, 4:46 AM CST | Winter Storm Warning | EAX | 19 hr |
| Feb 24, 11:13 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 24, 8:02 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 25, 10:56 PM CST | Winter Weather Advisory | EAX | 14 hr |
| Feb 27, 10:08 AM CST | Flood Watch | EAX | 13 hr |
| Mar 20, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Mar 22, 2:03 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 22, 8:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Mar 22, 8:35 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 22, 8:58 PM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| Mar 22, 9:39 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Apr 2, 8:52 PM CDT | Wind Advisory | EAX | 23 hr |
| Apr 3, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 3, 7:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Apr 3, 7:48 PM CDT | Severe Thunderstorm Warning | EAX | 28 min |
| Apr 3, 8:15 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 3, 8:38 PM CDT | Special Weather Statement | EAX | 52 min |
| Apr 3, 8:55 PM CDT | Severe Thunderstorm Warning | EAX | 35 min |
| Apr 3, 9:07 PM CDT | Severe Thunderstorm Warning | EAX | 38 min |
| Apr 3, 9:24 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Apr 4, 4:08 AM CDT | Wind Advisory | EAX | 11 hr |
| Apr 10, 3:35 AM CDT | Wind Advisory | EAX | 15 hr |
| Apr 19, 2:53 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 2, 2:52 PM CDT | Frost Advisory | EAX | 17 hr |
| May 3, 3:15 AM CDT | Frost Advisory | EAX | 29 hr |
| May 5, 5:33 PM CDT | Special Weather Statement | EAX | 42 min |
| May 11, 7:37 AM CDT | Severe Thunderstorm Warning | EAX | 23 min |
| May 11, 8:09 AM CDT | Mesoscale Discussion | SPC | 66 min |
| May 11, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 11, 6:17 PM CDT | Mesoscale Discussion | SPC | 28 min |
| May 12, 5:31 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 21, 5:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 21, 5:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 7:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 21, 8:54 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| May 21, 9:23 PM CDT | Severe Thunderstorm Warning | EAX | 37 min |
| May 21, 10:09 PM CDT | Severe Thunderstorm Warning | EAX | 17 min |
| May 22, 10:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 12:51 PM CDT | Tornado Watch | SPC | 10 hr |
| May 24, 10:01 PM CDT | Flash Flood Watch | EAX | 19 hr |
| May 25, 12:22 AM CDT | Special Weather Statement | EAX | 38 min |
| May 25, 2:14 AM CDT | Areal Flood Advisory | EAX | 5 hr |
| May 25, 1:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 28, 12:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 29, 1:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 3:41 AM CDT | Special Weather Statement | EAX | 49 min |
| Jun 4, 5:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 5, 2:52 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 3:05 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 9, 5:41 PM CDT | Severe Thunderstorm Warning | EAX | 49 min |
| Jun 9, 6:17 PM CDT | Tornado Warning | EAX | 28 min |
| Jun 9, 6:28 PM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| Jun 9, 6:38 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| Jun 9, 6:45 PM CDT | Flash Flood Warning | EAX | 6 hr |
| Jun 9, 6:59 PM CDT | Severe Thunderstorm Warning | EAX | 31 min |
| Jun 9, 7:28 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Jun 9, 7:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 9, 7:55 PM CDT | Severe Thunderstorm Warning | EAX | 35 min |
| Jun 9, 8:20 PM CDT | Severe Thunderstorm Warning | EAX | 25 min |
| Jun 9, 8:44 PM CDT | Severe Thunderstorm Warning | EAX | 31 min |
| Jun 9, 9:14 PM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Jun 9, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 10:06 PM CDT | Flash Flood Warning | EAX | 6 hr |
| Jun 9, 11:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 10, 12:31 AM CDT | Areal Flood Warning | EAX | 10 hr |
| Jun 10, 10:52 PM CDT | Special Weather Statement | EAX | 38 min |
| Jun 13, 5:16 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 13, 5:35 AM CDT | Severe Thunderstorm Warning | EAX | 40 min |
| Jun 13, 6:28 AM CDT | Severe Thunderstorm Warning | EAX | 47 min |
| Jun 13, 6:34 AM CDT | Areal Flood Advisory | EAX | 4 hr |
| Jun 13, 6:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 13, 7:11 AM CDT | Severe Thunderstorm Warning | EAX | 34 min |
| Jun 13, 10:04 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 13, 4:39 PM CDT | Flash Flood Watch | EAX | 35 hr |
| Jun 13, 9:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 14, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 14, 3:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 14, 7:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 14, 8:37 PM CDT | Special Weather Statement | EAX | 23 min |
| Jun 14, 9:06 PM CDT | Severe Thunderstorm Warning | EAX | 24 min |
| Jun 14, 9:29 PM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Jun 14, 10:31 PM CDT | Areal Flood Advisory | EAX | 4 hr |
| Jun 19, 6:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 9:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 20, 8:32 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 20, 10:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 20, 11:13 PM CDT | Severe Thunderstorm Warning | EAX | 32 min |
| Jun 20, 11:37 PM CDT | Special Weather Statement | EAX | 38 min |
| Jun 25, 3:51 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 2:55 PM CDT | Flash Flood Watch | EAX | 16 hr |
| Jun 26, 6:55 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 26, 10:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 10:54 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Jun 26, 11:24 PM CDT | Severe Thunderstorm Warning | EAX | 36 min |
| Jun 26, 11:42 PM CDT | Severe Thunderstorm Warning | EAX | 48 min |
| Jun 26, 11:44 PM CDT | Areal Flood Advisory | EAX | 6 hr |
| Jun 27, 5:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 28, 3:00 PM CDT | Excessive Heat Watch | EAX | 61 hr |
| Jun 29, 3:47 PM CDT | Excessive Heat Warning | EAX | 51 hr |
| Jul 8, 3:49 PM CDT | Heat Advisory | EAX | 60 hr |
| Jul 9, 9:23 PM CDT | Excessive Heat Warning | EAX | 69 hr |
| Jul 12, 3:58 AM CDT | Heat Advisory | EAX | 15 hr |
| Jul 14, 2:50 PM CDT | Excessive Heat Watch | EAX | 23 hr |
| Jul 14, 2:50 PM CDT | Excessive Heat Warning | EAX | 14 days |
| Jul 21, 10:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 24, 3:31 PM CDT | Excessive Heat Watch | EAX | 24 hr |
| Jul 25, 3:35 PM CDT | Heat Advisory | EAX | 3 days |
| Jul 28, 5:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 28, 10:08 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 29, 3:24 AM CDT | Excessive Heat Watch | EAX | 36 hr |
| Jul 29, 4:08 PM CDT | Excessive Heat Warning | EAX | 5 days |
| Jul 30, 5:30 AM CDT | Areal Flood Advisory | EAX | 6 hr |
| Jul 30, 6:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 30, 3:46 PM CDT | Heat Advisory | EAX | 45 hr |
| Aug 6, 8:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 10:14 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 6, 11:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 6, 11:07 PM CDT | Severe Thunderstorm Warning | EAX | 38 min |
| Aug 16, 8:55 AM CDT | Areal Flood Advisory | EAX | 5 hr |
| Aug 18, 8:14 PM CDT | Severe Thunderstorm Warning | EAX | 46 min |
| Sep 1, 10:21 AM CDT | Heat Advisory | EAX | 30 hr |
| Oct 6, 3:48 AM CDT | Red Flag Warning | EAX | 15 hr |
| Oct 11, 2:08 AM CDT | Dense Fog Advisory | EAX | 8 hr |
| Oct 12, 3:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Oct 18, 3:47 AM CDT | Frost Advisory | EAX | 28 hr |
| Oct 19, 4:15 AM CDT | Frost Advisory | EAX | 28 hr |
| Oct 20, 4:20 AM CDT | Freeze Warning | EAX | 28 hr |
| Oct 28, 3:41 PM CDT | Red Flag Warning | EAX | 27 hr |
| Nov 9, 2:47 AM CST | Special Weather Statement | EAX | 43 min |
| Dec 14, 11:04 AM CST | Special Weather Statement | EAX | 26 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.