Alert archive / Wisconsin / Portage County
Weather alerts in Portage County, Wisconsin, 2016
106 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Portage County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 106
- Warnings
- 19
- Watches
- 12
- Advisories
- 36
- Busiest month
- July18 alerts
- Busiest day
- September 21, 20166 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Portage County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 6 | 45% | 4 | 75% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: tornado warnings | 3 | 1 | 67% | 6 | 17% | 0 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 95 | 58 | 39% | 150 | 73% | 27 min |
| NWS Green Bay, WI: flash flood warnings | 1 | 1 | 0% | 1 | 100% | 101 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, 8:42 PM CST | Freezing Rain Advisory | GRB | 3 hr |
| Jan 8, 11:49 AM CST | Dense Fog Advisory | GRB | 11 hr |
| Jan 10, 3:19 PM CST | Wind Chill Advisory | GRB | 18 hr |
| Jan 11, 3:19 PM CST | Wind Chill Advisory | GRB | 20 hr |
| Jan 12, 2:53 PM CST | Wind Chill Advisory | GRB | 18 hr |
| Jan 16, 3:40 AM CST | Wind Chill Advisory | GRB | 56 hr |
| Jan 25, 3:50 AM CST | Winter Weather Advisory | GRB | 29 hr |
| Jan 31, 4:20 AM CST | Winter Storm Watch | GRB | 35 hr |
| Feb 1, 5:01 AM CST | Winter Storm Warning | GRB | 54 hr |
| Feb 2, 11:35 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 2, 8:37 PM CST | Winter Weather Advisory | GRB | 9 hr |
| Feb 3, 4:15 AM CST | Winter Weather Advisory | GRB | 105 min |
| Feb 12, 3:11 AM CST | Wind Chill Advisory | GRB | 30 hr |
| Feb 18, 2:46 PM CST | Wind Advisory | GRB | 29 hr |
| Feb 23, 3:29 AM CST | Freezing Fog Advisory | GRB | 6 hr |
| Mar 15, 3:23 PM CDT | Wind Advisory | GRB | 29 hr |
| Mar 16, 12:42 PM CDT | River Flood Advisory | GRB | 26 hr |
| Mar 16, 12:42 PM CDT | River Flood Advisory | GRB | 27 hr |
| Mar 16, 12:42 PM CDT | River Flood Advisory | GRB | 27 hr |
| Mar 16, 10:51 PM CDT | River Flood Warning | GRB | 69 hr |
| Mar 16, 10:51 PM CDT | River Flood Warning | GRB | 69 hr |
| Mar 21, 2:59 PM CDT | Winter Storm Watch | GRB | 38 hr |
| Mar 22, 3:22 PM CDT | Winter Storm Warning | GRB | 49 hr |
| Mar 23, 9:39 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 21, 5:46 PM CDT | Special Weather Statement | GRB | 89 min |
| Apr 21, 7:16 PM CDT | Special Weather Statement | GRB | 44 min |
| Apr 25, 3:38 PM CDT | Special Weather Statement | GRB | 22 min |
| May 3, 7:18 PM CDT | Special Weather Statement | GRB | 87 min |
| May 4, 3:45 AM CDT | Frost Advisory | GRB | 27 hr |
| May 13, 2:48 PM CDT | Freeze Watch | GRB | 13 hr |
| May 14, 4:17 AM CDT | Freeze Warning | GRB | 28 hr |
| May 17, 2:57 PM CDT | Frost Advisory | GRB | 16 hr |
| May 18, 2:22 PM CDT | Frost Advisory | GRB | 17 hr |
| May 25, 2:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 25, 3:54 PM CDT | Special Weather Statement | GRB | 36 min |
| May 25, 4:30 PM CDT | Severe Thunderstorm Warning | GRB | 45 min |
| Jun 3, 2:31 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 6:40 PM CDT | Severe Thunderstorm Warning | GRB | 65 min |
| Jun 5, 4:27 PM CDT | Severe Thunderstorm Warning | GRB | 48 min |
| Jun 5, 5:01 PM CDT | Severe Thunderstorm Warning | GRB | 59 min |
| Jun 10, 2:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Jun 10, 2:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 10, 5:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 6:21 PM CDT | Severe Thunderstorm Warning | GRB | 54 min |
| Jun 15, 12:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 2:13 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 15, 3:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 4:27 PM CDT | Severe Thunderstorm Warning | GRB | 33 min |
| Jun 23, 1:30 AM CDT | Special Weather Statement | GRB | 60 min |
| Jun 26, 12:33 AM CDT | Special Weather Statement | GRB | 87 min |
| Jun 26, 1:59 AM CDT | Special Weather Statement | GRB | 91 min |
| Jun 30, 2:32 PM CDT | Special Weather Statement | GRB | 28 min |
| Jun 30, 7:46 PM CDT | Special Weather Statement | GRB | 44 min |
| Jun 30, 8:04 PM CDT | Special Weather Statement | GRB | 41 min |
| Jul 5, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 10:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 7, 4:52 PM CDT | Special Weather Statement | GRB | 53 min |
| Jul 7, 7:04 PM CDT | Special Weather Statement | GRB | 41 min |
| Jul 7, 7:44 PM CDT | Special Weather Statement | GRB | 46 min |
| Jul 8, 2:33 AM CDT | Special Weather Statement | GRB | 87 min |
| Jul 13, 8:15 PM CDT | Severe Thunderstorm Warning | GRB | 24 min |
| Jul 20, 10:49 AM CDT | Special Weather Statement | GRB | 41 min |
| Jul 20, 11:39 AM CDT | Special Weather Statement | GRB | 51 min |
| Jul 20, 3:02 PM CDT | Heat Advisory | GRB | 13 hr |
| Jul 21, 6:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 7:13 AM CDT | Severe Thunderstorm Warning | GRB | 68 min |
| Jul 21, 3:01 PM CDT | Special Weather Statement | GRB | 44 min |
| Jul 21, 3:50 PM CDT | Special Weather Statement | GRB | 40 min |
| Jul 21, 4:00 PM CDT | Severe Thunderstorm Warning | GRB | 75 min |
| Jul 27, 5:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 4, 12:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 12:30 PM CDT | Special Weather Statement | GRB | 60 min |
| Aug 4, 1:31 PM CDT | Special Weather Statement | GRB | 89 min |
| Aug 11, 8:50 AM CDT | Special Weather Statement | GRB | 55 min |
| Aug 16, 10:29 PM CDT | Special Weather Statement | GRB | 91 min |
| Sep 5, 6:19 PM CDT | Flood Watch | GRB | 49 hr |
| Sep 6, 2:22 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 5:18 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 20, 1:32 AM CDT | Dense Fog Advisory | GRB | 7 hr |
| Sep 21, 2:42 AM CDT | Severe Thunderstorm Warning | GRB | 48 min |
| Sep 21, 3:02 AM CDT | Flash Flood Watch | GRB | 30 hr |
| Sep 21, 2:30 PM CDT | Areal Flood Advisory | GRB | 6 hr |
| Sep 21, 2:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Sep 21, 2:37 PM CDT | Special Weather Statement | GRB | 23 min |
| Sep 21, 2:56 PM CDT | Severe Thunderstorm Warning | GRB | 22 min |
| Sep 21, 10:49 PM CDT | Areal Flood Warning | GRB | 21 hr |
| Sep 24, 3:12 PM CDT | Flash Flood Watch | GRB | 16 hr |
| Oct 7, 3:42 AM CDT | Frost Advisory | GRB | 28 hr |
| Oct 8, 2:28 PM CDT | Frost Advisory | GRB | 18 hr |
| Oct 12, 4:46 AM CDT | Freeze Warning | GRB | 28 hr |
| Oct 17, 2:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 4, 5:48 AM CDT | Dense Fog Advisory | GRB | 6 hr |
| Nov 18, 4:06 AM CST | Wind Advisory | GRB | 48 hr |
| Nov 22, 3:47 AM CST | Winter Weather Advisory | GRB | 41 hr |
| Nov 26, 10:50 PM CST | Dense Fog Advisory | GRB | 14 hr |
| Dec 3, 2:36 PM CST | Winter Weather Advisory | GRB | 30 hr |
| Dec 9, 12:11 PM CST | Winter Storm Watch | GRB | 26 hr |
| Dec 10, 2:26 PM CST | Winter Weather Advisory | GRB | 28 hr |
| Dec 14, 3:37 AM CST | Wind Chill Advisory | GRB | 31 hr |
| Dec 14, 1:54 PM CST | Winter Storm Watch | GRB | 22 hr |
| Dec 15, 11:35 AM CST | Winter Storm Warning | GRB | 58 hr |
| Dec 17, 3:24 PM CST | Wind Chill Advisory | GRB | 43 hr |
| Dec 22, 2:21 PM CST | Winter Weather Advisory | GRB | 33 hr |
| Dec 24, 2:54 PM CST | Freezing Rain Advisory | GRB | 13 hr |
| Dec 25, 3:35 AM CST | Freezing Rain Advisory | GRB | 19 hr |
| Dec 25, 9:25 PM CST | Wind Advisory | GRB | 25 hr |
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 archive20152017
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.