Alert archive / Wisconsin / Portage County
Weather alerts in Portage County, Wisconsin, 2017
151 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 151
- Warnings
- 24
- Watches
- 11
- Advisories
- 36
- Busiest month
- June32 alerts
- Busiest day
- May 17, 201713 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 reports fell inside a warning.
Portage County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 16 | 10 | 38% | 9 | 78% | 28 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: tornado warnings | 6 | 2 | 67% | 15 | 40% | 6 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 140 | 60 | 57% | 178 | 80% | 26 min |
| NWS Green Bay, WI: flash flood warnings | 1 | 0 | 100% | 0 |
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 1, 2:56 PM CST | Winter Weather Advisory | GRB | 39 hr |
| Jan 4, 2:44 PM CST | Wind Chill Advisory | GRB | 45 hr |
| Jan 6, 2:18 PM CST | Wind Chill Advisory | GRB | 20 hr |
| Jan 9, 3:44 AM CST | Winter Weather Advisory | GRB | 42 hr |
| Jan 9, 3:47 PM CST | Winter Storm Warning | GRB | 27 hr |
| Jan 15, 2:56 PM CST | Winter Storm Watch | GRB | 13 hr |
| Jan 16, 4:25 AM CST | Winter Weather Advisory | GRB | 32 hr |
| Jan 16, 6:27 PM CST | Winter Storm Warning | GRB | 12 hr |
| Jan 18, 2:10 AM CST | Dense Fog Advisory | GRB | 4 hr |
| Jan 19, 3:12 AM CST | Dense Fog Advisory | GRB | 9 hr |
| Jan 19, 3:33 PM CST | Freezing Rain Advisory | GRB | 20 hr |
| Jan 20, 3:33 PM CST | Dense Fog Advisory | GRB | 47 hr |
| Jan 24, 3:54 AM CST | Winter Weather Advisory | GRB | 44 hr |
| Jan 29, 2:33 PM CST | Winter Weather Advisory | GRB | 37 hr |
| Feb 6, 2:50 PM CST | Freezing Rain Advisory | GRB | 27 hr |
| Feb 23, 4:36 AM CST | Winter Storm Watch | GRB | 10 hr |
| Feb 23, 4:36 AM CST | Winter Weather Advisory | GRB | 49 hr |
| Feb 23, 8:35 AM CST | River Flood Warning | GRB | 34 hr |
| Feb 23, 2:50 PM CST | Winter Storm Warning | GRB | 39 hr |
| Feb 23, 11:54 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 28, 2:39 PM CST | Winter Weather Advisory | GRB | 27 hr |
| Mar 6, 3:28 PM CST | Wind Advisory | GRB | 52 hr |
| Mar 6, 9:47 PM CST | Severe Thunderstorm Warning | GRB | 28 min |
| Mar 6, 10:11 PM CST | Severe Thunderstorm Warning | GRB | 34 min |
| Mar 6, 10:47 PM CST | Severe Thunderstorm Warning | GRB | 43 min |
| Mar 16, 9:46 PM CDT | Winter Weather Advisory | GRB | 11 hr |
| Apr 9, 11:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 10, 12:01 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 10, 1:51 AM CDT | Special Weather Statement | GRB | 39 min |
| Apr 10, 2:16 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Apr 10, 7:33 AM CDT | Special Weather Statement | GRB | 27 min |
| Apr 15, 8:37 AM CDT | Special Weather Statement | GRB | 83 min |
| Apr 19, 8:50 PM CDT | Special Weather Statement | GRB | 85 min |
| May 2, 3:19 PM CDT | Frost Advisory | GRB | 17 hr |
| May 6, 3:35 AM CDT | Frost Advisory | GRB | 28 hr |
| May 7, 3:36 AM CDT | Freeze Warning | GRB | 28 hr |
| May 15, 3:18 PM CDT | Special Weather Statement | GRB | 57 min |
| May 16, 12:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 2:26 PM CDT | Special Weather Statement | GRB | 49 min |
| May 16, 3:15 PM CDT | Special Weather Statement | GRB | 45 min |
| May 16, 3:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 16, 6:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 16, 9:14 PM CDT | Mesoscale Discussion | SPC | 61 min |
| May 16, 9:47 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 16, 11:48 PM CDT | Special Weather Statement | GRB | 42 min |
| May 16, 11:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 17, 12:31 AM CDT | Special Weather Statement | GRB | 44 min |
| May 17, 2:01 AM CDT | Special Weather Statement | GRB | 89 min |
| May 17, 12:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 17, 1:46 PM CDT | Severe Thunderstorm Warning | GRB | 44 min |
| May 17, 2:44 PM CDT | Special Weather Statement | GRB | 61 min |
| May 17, 3:13 PM CDT | Tornado Watch | SPC | 9 hr |
| May 17, 3:17 PM CDT | Special Weather Statement | GRB | 58 min |
| May 17, 6:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 17, 6:57 PM CDT | Severe Thunderstorm Warning | GRB | 63 min |
| May 17, 7:59 PM CDT | Severe Thunderstorm Warning | GRB | 61 min |
| May 17, 8:37 PM CDT | Areal Flood Advisory | GRB | 12 hr |
| May 17, 8:54 PM CDT | Severe Thunderstorm Warning | GRB | 44 min |
| May 17, 9:26 PM CDT | Severe Thunderstorm Warning | GRB | 49 min |
| May 18, 2:50 PM CDT | Frost Advisory | GRB | 17 hr |
| May 18, 7:35 PM CDT | River Flood Warning | GRB | 64 hr |
| May 18, 7:36 PM CDT | River Flood Warning | GRB | 64 hr |
| May 21, 10:37 PM CDT | Areal Flood Advisory | GRB | 24 hr |
| Jun 3, 3:37 AM CDT | Special Weather Statement | GRB | 38 min |
| Jun 3, 2:48 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 3, 5:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 3, 6:33 PM CDT | Special Weather Statement | GRB | 42 min |
| Jun 11, 9:30 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 11, 10:39 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 11, 12:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 12:22 PM CDT | Special Weather Statement | GRB | 53 min |
| Jun 11, 1:08 PM CDT | Special Weather Statement | GRB | 67 min |
| Jun 11, 6:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 11:23 PM CDT | Special Weather Statement | GRB | 67 min |
| Jun 12, 6:20 AM CDT | Areal Flood Advisory | GRB | 48 hr |
| Jun 12, 4:37 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 12, 4:47 PM CDT | Severe Thunderstorm Warning | GRB | 58 min |
| Jun 12, 5:39 PM CDT | Severe Thunderstorm Warning | GRB | 51 min |
| Jun 12, 6:30 PM CDT | Severe Thunderstorm Warning | GRB | 30 min |
| Jun 12, 6:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 9:59 AM CDT | Areal Flood Advisory | GRB | 2 hr |
| Jun 13, 10:56 AM CDT | Special Weather Statement | GRB | 49 min |
| Jun 13, 11:55 AM CDT | Flash Flood Warning | GRB | 6 hr |
| Jun 14, 12:06 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 12:44 PM CDT | Special Weather Statement | GRB | 76 min |
| Jun 14, 1:58 PM CDT | Special Weather Statement | GRB | 77 min |
| Jun 14, 2:14 PM CDT | Severe Thunderstorm Warning | GRB | 59 min |
| Jun 14, 2:48 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Jun 16, 1:41 PM CDT | Special Weather Statement | GRB | 49 min |
| Jun 16, 2:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 9:07 PM CDT | Special Weather Statement | GRB | 38 min |
| Jun 19, 8:05 AM CDT | River Flood Advisory | GRB | 36 hr |
| Jun 22, 12:12 AM CDT | Special Weather Statement | GRB | 48 min |
| Jun 22, 12:02 PM CDT | Special Weather Statement | GRB | 58 min |
| Jul 5, 11:23 AM CDT | Special Weather Statement | GRB | 37 min |
| Jul 6, 9:19 AM CDT | Special Weather Statement | GRB | 41 min |
| Jul 6, 5:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 6, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 9:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 6, 10:24 PM CDT | Special Weather Statement | GRB | 51 min |
| Jul 7, 3:51 PM CDT | Special Weather Statement | GRB | 69 min |
| Jul 12, 1:49 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 3:56 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 12, 4:50 AM CDT | Special Weather Statement | GRB | 85 min |
| Jul 12, 2:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 12, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 12, 6:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 12, 7:31 PM CDT | Special Weather Statement | GRB | 59 min |
| Jul 12, 8:17 PM CDT | Special Weather Statement | GRB | 43 min |
| Jul 12, 8:27 PM CDT | Severe Thunderstorm Warning | GRB | 28 min |
| Jul 15, 4:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 5:53 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 15, 7:22 PM CDT | Special Weather Statement | GRB | 68 min |
| Jul 18, 11:42 AM CDT | Special Weather Statement | GRB | 93 min |
| Jul 18, 2:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 18, 3:51 PM CDT | Special Weather Statement | GRB | 69 min |
| Jul 18, 5:00 PM CDT | Special Weather Statement | GRB | 90 min |
| Jul 19, 8:24 PM CDT | Wind Advisory | GRB | 2 hr |
| Jul 26, 3:17 AM CDT | Special Weather Statement | GRB | 58 min |
| Jul 26, 7:43 AM CDT | Special Weather Statement | GRB | 47 min |
| Jul 31, 2:50 PM CDT | Special Weather Statement | GRB | 40 min |
| Aug 3, 8:01 AM CDT | Special Weather Statement | GRB | 59 min |
| Aug 3, 6:51 PM CDT | Special Weather Statement | GRB | 84 min |
| Aug 5, 4:11 PM CDT | Special Weather Statement | GRB | 79 min |
| Aug 10, 2:52 PM CDT | Special Weather Statement | GRB | 53 min |
| Aug 28, 10:31 AM CDT | Special Weather Statement | GRB | 89 min |
| Aug 28, 12:45 PM CDT | Special Weather Statement | GRB | 75 min |
| Sep 2, 10:00 PM CDT | Dense Fog Advisory | GRB | 10 hr |
| Sep 4, 6:28 PM CDT | Special Weather Statement | GRB | 92 min |
| Sep 17, 5:38 AM CDT | Special Weather Statement | GRB | 52 min |
| Sep 20, 7:28 AM CDT | Special Weather Statement | GRB | 47 min |
| Sep 20, 3:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Sep 20, 4:11 PM CDT | Special Weather Statement | GRB | 49 min |
| Sep 20, 4:58 PM CDT | Severe Thunderstorm Warning | GRB | 47 min |
| Sep 20, 5:27 PM CDT | Severe Thunderstorm Warning | GRB | 48 min |
| Sep 20, 6:36 PM CDT | Areal Flood Advisory | GRB | 4 hr |
| Sep 20, 7:30 PM CDT | Severe Thunderstorm Warning | GRB | 45 min |
| Oct 3, 7:49 PM CDT | Special Weather Statement | GRB | 41 min |
| Oct 3, 8:08 PM CDT | Special Weather Statement | GRB | 22 min |
| Oct 3, 8:29 PM CDT | Special Weather Statement | GRB | 31 min |
| Oct 15, 3:18 PM CDT | Frost Advisory | GRB | 18 hr |
| Oct 22, 12:27 AM CDT | Special Weather Statement | GRB | 63 min |
| Oct 22, 1:24 AM CDT | Special Weather Statement | GRB | 51 min |
| Oct 22, 11:12 PM CDT | Dense Fog Advisory | GRB | 11 hr |
| Oct 23, 2:33 PM CDT | Wind Advisory | GRB | 24 hr |
| Nov 2, 5:38 AM CDT | Dense Fog Advisory | GRB | 5 hr |
| Dec 4, 3:53 AM CST | Wind Advisory | GRB | 38 hr |
| Dec 12, 1:45 PM CST | Winter Weather Advisory | GRB | 31 hr |
| Dec 24, 2:09 PM CST | Wind Chill Advisory | GRB | 70 hr |
| Dec 29, 1:26 PM CST | Wind Chill Advisory | GRB | 4 days |
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 | 16 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 53 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 3 |
| Areal Flood Advisory | 6 |
| River Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 9 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.