Alert archive / Nebraska / Polk County
Weather alerts in Polk County, Nebraska, 2013
128 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 128
- Warnings
- 20
- Watches
- 19
- Advisories
- 37
- Busiest month
- May32 alerts
- Busiest day
- April 9, 20139 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Polk County in 2013 had a tornado report inside them.
Polk County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 12 | 3 | 75% | 5 | 80% | 8 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Hastings, NE: tornado warnings | 36 | 11 | 69% | 20 | 65% | 12 min |
| NWS Hastings, NE: severe thunderstorm warnings | 262 | 117 | 55% | 276 | 77% | 19 min |
| NWS Hastings, NE: flash flood warnings | 2 | 1 | 50% | 1 | 100% | 56 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, 10:30 PM CST | Dense Fog Advisory | GID | 10 hr |
| Jan 10, 2:43 PM CST | Dense Fog Advisory | GID | 21 hr |
| Jan 11, 3:57 AM CST | Wind Advisory | GID | 21 hr |
| Jan 27, 8:39 AM CST | Dense Fog Advisory | GID | 6 hr |
| Jan 27, 3:57 PM CST | Dense Fog Advisory | GID | 23 hr |
| Jan 28, 3:00 PM CST | Dense Fog Advisory | GID | 9 hr |
| Jan 29, 2:52 PM CST | Winter Weather Advisory | GID | 15 hr |
| Jan 29, 8:29 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 8, 2:16 AM CST | Dense Fog Advisory | GID | 10 hr |
| Feb 9, 3:24 PM CST | Wind Advisory | GID | 30 hr |
| Feb 13, 3:31 PM CST | Wind Advisory | GID | 26 hr |
| Feb 17, 9:45 PM CST | Wind Advisory | GID | 20 hr |
| Feb 18, 3:19 PM CST | Winter Storm Watch | GID | 23 hr |
| Feb 19, 2:29 PM CST | Winter Storm Warning | GID | 58 hr |
| Feb 21, 1:24 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 3:48 PM CST | Dense Fog Advisory | GID | 20 hr |
| Mar 4, 2:47 PM CST | Wind Advisory | GID | 24 hr |
| Mar 8, 3:23 PM CST | Winter Storm Watch | GID | 13 hr |
| Mar 9, 4:10 AM CST | Blizzard Warning | GID | 29 hr |
| Mar 10, 10:18 AM CDT | Blizzard Warning | GID | 5 hr |
| Mar 10, 10:18 AM CDT | Winter Weather Advisory | GID | 12 hr |
| Mar 22, 3:36 PM CDT | Winter Weather Advisory | GID | 32 hr |
| Mar 30, 6:26 AM CDT | Dense Fog Advisory | GID | 4 hr |
| Apr 8, 6:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 8, 11:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 9, 12:58 AM CDT | Wind Advisory | GID | 12 hr |
| Apr 9, 2:44 AM CDT | Severe Thunderstorm Warning | GID | 31 min |
| Apr 9, 3:03 AM CDT | Special Weather Statement | GID | 27 min |
| Apr 9, 3:14 AM CDT | Special Weather Statement | GID | 31 min |
| Apr 9, 3:38 AM CDT | Severe Thunderstorm Warning | GID | 22 min |
| Apr 9, 3:57 AM CDT | Severe Thunderstorm Warning | GID | 18 min |
| Apr 9, 10:42 AM CDT | Winter Weather Advisory | GID | 41 hr |
| Apr 9, 5:12 PM CDT | Special Weather Statement | GID | 48 min |
| Apr 9, 7:00 PM CDT | Special Weather Statement | GID | 45 min |
| Apr 9, 7:22 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 9, 7:51 PM CDT | Special Weather Statement | GID | 39 min |
| Apr 9, 8:35 PM CDT | Special Weather Statement | GID | 40 min |
| Apr 17, 4:07 AM CDT | Winter Weather Advisory | GID | 34 hr |
| Apr 27, 1:31 AM CDT | Dense Fog Advisory | GID | 8 hr |
| May 1, 4:14 PM CDT | Freeze Watch | GID | 11 hr |
| May 2, 3:43 AM CDT | Freeze Warning | GID | 29 hr |
| May 6, 3:39 AM CDT | Dense Fog Advisory | GID | 6 hr |
| May 11, 3:30 PM CDT | Frost Advisory | GID | 14 hr |
| May 13, 3:19 PM CDT | Fire Weather Watch | GID | 12 hr |
| May 14, 3:34 AM CDT | Red Flag Warning | GID | 17 hr |
| May 14, 2:55 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 16, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 18, 7:29 PM CDT | Tornado Watch | SPC | 5 hr |
| May 18, 9:28 PM CDT | Special Weather Statement | GID | 32 min |
| May 19, 4:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 19, 4:50 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 19, 7:07 PM CDT | Special Weather Statement | GID | 8 min |
| May 19, 7:20 PM CDT | Special Weather Statement | GID | 10 min |
| May 24, 11:50 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 25, 12:04 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 25, 9:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 26, 6:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 7:33 PM CDT | Tornado Watch | SPC | 4 hr |
| May 26, 9:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 26, 11:03 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 1:36 AM CDT | Special Weather Statement | GID | 24 min |
| May 29, 8:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 29, 1:04 PM CDT | Tornado Watch | SPC | 9 hr |
| May 29, 3:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 29, 4:19 PM CDT | Severe Thunderstorm Warning | GID | 41 min |
| May 29, 4:58 PM CDT | Tornado Warning | GID | 32 min |
| May 29, 5:15 PM CDT | Severe Thunderstorm Warning | GID | 30 min |
| May 29, 5:18 PM CDT | Tornado Warning | GID | 27 min |
| May 29, 6:22 PM CDT | Areal Flood Advisory | GID | 4 hr |
| May 29, 8:38 PM CDT | Special Weather Statement | GID | 52 min |
| May 29, 10:30 PM CDT | Areal Flood Advisory | GID | 4 hr |
| Jun 8, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 5:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 12, 1:59 AM CDT | Special Weather Statement | GID | 31 min |
| Jun 12, 2:16 AM CDT | Severe Thunderstorm Warning | GID | 29 min |
| Jun 14, 2:28 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 3:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 3:37 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 14, 5:44 PM CDT | Severe Thunderstorm Warning | GID | 46 min |
| Jun 14, 6:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 14, 6:58 PM CDT | Severe Thunderstorm Warning | GID | 47 min |
| Jun 21, 10:25 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 22, 5:56 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 23, 8:35 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 23, 10:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jun 24, 2:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 24, 9:48 PM CDT | Special Weather Statement | GID | 27 min |
| Jun 24, 10:12 PM CDT | Special Weather Statement | GID | 33 min |
| Jun 27, 4:28 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 7, 9:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 6:40 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 4:42 AM CDT | Special Weather Statement | GID | 48 min |
| Jul 24, 4:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 25, 5:18 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 25, 7:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 29, 9:43 PM CDT | Dense Fog Advisory | GID | 11 hr |
| Jul 30, 2:27 PM CDT | Dense Fog Advisory | GID | 13 hr |
| Aug 1, 8:16 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 1, 1:22 PM CDT | Tornado Watch | SPC | 9 hr |
| Aug 1, 3:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 1, 6:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 1, 6:23 PM CDT | Severe Thunderstorm Warning | GID | 52 min |
| Aug 6, 5:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 6, 5:22 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 9:26 PM CDT | Special Weather Statement | GID | 34 min |
| Aug 11, 3:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 31, 3:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Sep 1, 1:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Sep 8, 5:46 AM CDT | Dense Fog Advisory | GID | 4 hr |
| Sep 25, 5:35 AM CDT | Dense Fog Advisory | GID | 4 hr |
| Sep 27, 5:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Oct 3, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 3, 8:16 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Oct 4, 2:06 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Oct 4, 1:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 10, 2:17 PM CDT | Wind Advisory | GID | 25 hr |
| Oct 12, 3:34 PM CDT | Frost Advisory | GID | 17 hr |
| Oct 15, 11:23 AM CDT | Frost Advisory | GID | 22 hr |
| Oct 17, 11:56 AM CDT | Freeze Warning | GID | 21 hr |
| Oct 29, 11:48 AM CDT | Dense Fog Advisory | GID | 16 hr |
| Oct 30, 5:42 AM CDT | Severe Thunderstorm Warning | GID | 18 min |
| Oct 30, 5:59 AM CDT | Severe Thunderstorm Warning | GID | 31 min |
| Oct 30, 6:16 AM CDT | Severe Thunderstorm Warning | GID | 29 min |
| Nov 16, 2:30 PM CST | Wind Advisory | GID | 27 hr |
| Dec 4, 3:55 AM CST | Winter Weather Advisory | GID | 5 hr |
| Dec 7, 11:19 PM CST | Winter Weather Advisory | GID | 19 hr |
| Dec 8, 3:52 PM CST | Wind Chill Advisory | GID | 18 hr |
| Dec 28, 2:58 AM CST | Wind Advisory | GID | 24 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 | 12 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 36 |
| Special Weather Statement | 16 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.