Alert archive / Nebraska / Cedar County
Weather alerts in Cedar County, Nebraska, 2011
115 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cedar County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 115
- Warnings
- 35
- Watches
- 16
- Advisories
- 44
- Busiest month
- August28 alerts
- Busiest day
- August 18, 20118 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cedar County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 25 | 13 | 48% | 11 | 82% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Omaha, NE: tornado warnings | 31 | 5 | 84% | 9 | 78% | 18 min |
| NWS Omaha, NE: severe thunderstorm warnings | 364 | 244 | 33% | 491 | 86% | 22 min |
| NWS Omaha, NE: flash flood warnings | 31 | 9 | 71% | 16 | 94% | 86 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 7, 4:47 AM CST | Wind Advisory | OAX | 11 hr |
| Jan 8, 2:26 PM CST | Winter Weather Advisory | OAX | 69 hr |
| Jan 11, 3:46 PM CST | Wind Chill Advisory | OAX | 18 hr |
| Jan 21, 3:24 PM CST | Winter Storm Watch | OAX | 13 hr |
| Jan 22, 4:26 AM CST | Winter Weather Advisory | OAX | 29 hr |
| Jan 23, 4:16 AM CST | Wind Chill Advisory | OAX | 7 hr |
| Jan 30, 4:55 PM CST | Winter Storm Warning | OAX | 58 hr |
| Jan 30, 4:55 PM CST | Winter Weather Advisory | OAX | 23 hr |
| Feb 1, 4:05 AM CST | Wind Chill Warning | OAX | 23 hr |
| Feb 1, 4:05 AM CST | Wind Chill Advisory | OAX | 31 hr |
| Feb 1, 4:05 AM CST | Winter Weather Advisory | OAX | 20 hr |
| Feb 2, 3:24 PM CST | Wind Chill Advisory | OAX | 17 hr |
| Feb 7, 3:24 PM CST | Wind Chill Advisory | OAX | 21 hr |
| Feb 8, 3:24 PM CST | Wind Chill Advisory | OAX | 17 hr |
| Feb 19, 4:20 AM CST | Winter Storm Watch | OAX | 11 hr |
| Feb 19, 3:27 PM CST | Ice Storm Warning | OAX | 13 hr |
| Feb 20, 4:29 AM CST | Winter Weather Advisory | OAX | 11 hr |
| Mar 7, 1:45 AM CST | Winter Weather Advisory | OAX | 16 hr |
| Mar 7, 3:47 PM CST | Winter Weather Advisory | OAX | 30 hr |
| Mar 11, 12:12 PM CST | Wind Advisory | OAX | 3 hr |
| Apr 3, 11:08 AM CDT | Wind Advisory | OAX | 28 hr |
| Apr 9, 5:48 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 9, 6:55 PM CDT | Severe Thunderstorm Warning | OAX | 50 min |
| Apr 9, 7:24 PM CDT | Severe Thunderstorm Warning | OAX | 22 min |
| Apr 9, 9:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 12, 1:30 PM CDT | Red Flag Warning | OAX | 6 hr |
| Apr 15, 3:49 AM CDT | Winter Weather Advisory | OAX | 16 hr |
| Apr 15, 8:04 PM CDT | Winter Weather Advisory | OAX | 116 min |
| Apr 18, 11:37 PM CDT | Winter Weather Advisory | OAX | 8 hr |
| Apr 28, 3:57 PM CDT | Wind Advisory | OAX | 28 hr |
| Apr 30, 3:41 AM CDT | Wind Advisory | OAX | 12 hr |
| May 1, 11:58 AM CDT | Red Flag Warning | OAX | 4 hr |
| May 2, 3:58 PM CDT | Frost Advisory | OAX | 16 hr |
| May 11, 5:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 15, 3:33 PM CDT | Frost Advisory | OAX | 16 hr |
| May 21, 6:44 PM CDT | Severe Thunderstorm Warning | OAX | 33 min |
| May 25, 4:01 AM CDT | Wind Advisory | OAX | 12 hr |
| May 29, 3:28 PM CDT | Wind Advisory | OAX | 34 hr |
| May 29, 9:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 29, 10:27 PM CDT | Severe Thunderstorm Warning | OAX | 46 min |
| May 30, 1:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 30, 2:08 PM CDT | Tornado Watch | SPC | 7 hr |
| May 30, 6:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 30, 8:37 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 2, 8:05 AM CDT | River Flood Warning | FSD | 109 days |
| Jun 8, 8:47 AM CDT | River Flood Warning | FSD | 75 days |
| Jun 9, 9:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 16, 11:03 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 17, 1:25 AM CDT | Severe Thunderstorm Warning | OAX | 34 min |
| Jun 20, 6:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 20, 6:53 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 20, 7:27 PM CDT | Severe Thunderstorm Warning | OAX | 48 min |
| Jun 20, 7:50 PM CDT | Severe Thunderstorm Warning | OAX | 40 min |
| Jun 20, 8:27 PM CDT | Severe Thunderstorm Warning | OAX | 33 min |
| Jun 20, 8:49 PM CDT | Areal Flood Advisory | OAX | 6 hr |
| Jun 26, 6:16 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 26, 4:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 6:28 PM CDT | Severe Thunderstorm Warning | OAX | 47 min |
| Jun 26, 7:10 PM CDT | Areal Flood Advisory | OAX | 97 min |
| Jun 29, 3:05 PM CDT | Heat Advisory | OAX | 28 hr |
| Jul 1, 12:59 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Jul 10, 10:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 10, 10:57 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 10, 11:56 PM CDT | Severe Thunderstorm Warning | OAX | 49 min |
| Jul 11, 12:25 AM CDT | Severe Thunderstorm Warning | OAX | 35 min |
| Jul 12, 2:09 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 14, 3:09 AM CDT | Excessive Heat Watch | OAX | 36 hr |
| Jul 14, 2:30 PM CDT | Excessive Heat Warning | OAX | 6 days |
| Jul 22, 3:31 PM CDT | Heat Advisory | OAX | 28 hr |
| Jul 30, 3:26 PM CDT | Heat Advisory | OAX | 60 hr |
| Aug 6, 3:51 AM CDT | Dense Fog Advisory | OAX | 5 hr |
| Aug 6, 2:58 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 9:35 PM CDT | Severe Thunderstorm Warning | OAX | 40 min |
| Aug 7, 7:49 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 9:46 PM CDT | Severe Thunderstorm Warning | OAX | 44 min |
| Aug 7, 10:25 PM CDT | Severe Thunderstorm Warning | OAX | 50 min |
| Aug 7, 10:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 10:58 PM CDT | Severe Thunderstorm Warning | OAX | 47 min |
| Aug 11, 6:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 11, 7:19 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 11, 8:03 PM CDT | Severe Thunderstorm Warning | OAX | 42 min |
| Aug 11, 8:46 PM CDT | Severe Thunderstorm Warning | OAX | 44 min |
| Aug 11, 9:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Aug 18, 12:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 18, 12:56 PM CDT | Severe Thunderstorm Warning | OAX | 49 min |
| Aug 18, 1:22 PM CDT | Severe Thunderstorm Warning | OAX | 53 min |
| Aug 18, 1:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 18, 3:14 PM CDT | Severe Thunderstorm Warning | OAX | 46 min |
| Aug 18, 3:59 PM CDT | Severe Thunderstorm Warning | OAX | 20 min |
| Aug 18, 5:28 PM CDT | Severe Thunderstorm Warning | OAX | 47 min |
| Aug 18, 6:18 PM CDT | Mesoscale Discussion | SPC | 27 min |
| Aug 22, 1:10 AM CDT | Severe Thunderstorm Warning | OAX | 28 min |
| Aug 22, 1:42 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 22, 2:34 AM CDT | Severe Thunderstorm Warning | OAX | 41 min |
| Aug 28, 8:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 28, 8:22 AM CDT | Severe Thunderstorm Warning | OAX | 38 min |
| Aug 28, 10:41 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 31, 5:54 AM CDT | Dense Fog Advisory | OAX | 3 hr |
| Sep 3, 3:11 AM CDT | Dense Fog Advisory | OAX | 6 hr |
| Sep 14, 4:12 AM CDT | Frost Advisory | OAX | 28 hr |
| Sep 22, 3:40 PM CDT | Frost Advisory | OAX | 16 hr |
| Oct 3, 3:32 PM CDT | Fire Weather Watch | OAX | 12 hr |
| Oct 4, 3:45 AM CDT | Fire Weather Watch | OAX | 24 hr |
| Oct 4, 3:45 AM CDT | Red Flag Warning | OAX | 15 hr |
| Oct 5, 3:35 AM CDT | Red Flag Warning | OAX | 15 hr |
| Oct 5, 3:31 PM CDT | Wind Advisory | OAX | 30 hr |
| Oct 7, 2:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Nov 4, 3:56 PM CDT | Wind Advisory | OAX | 27 hr |
| Nov 15, 3:23 AM CST | Wind Advisory | OAX | 11 hr |
| Nov 19, 6:38 AM CST | Winter Weather Advisory | OAX | 8 hr |
| Nov 25, 3:34 PM CST | Wind Advisory | OAX | 26 hr |
| Nov 26, 3:06 AM CST | Wind Advisory | OAX | 15 hr |
| Dec 3, 3:41 AM CST | Winter Weather Advisory | OAX | 19 hr |
| Dec 13, 9:07 PM CST | Dense Fog Advisory | OAX | 9 hr |
| Dec 30, 3:54 PM CST | Wind Advisory | OAX | 35 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 | 25 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 20 |
| Flooding | |
| River Flood Warning | 2 |
| Areal Flood Advisory | 2 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 12 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Wind Chill Warning | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 13 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
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.