Alert archive / Indiana / Porter County
Weather alerts in Porter County, Indiana, 2022
117 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Porter County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 117
- Warnings
- 23
- Watches
- 15
- Advisories
- 39
- Busiest month
- August20 alerts
- Busiest day
- August 29, 20228 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 Porter County in 2022 had a tornado report inside them.
Porter County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 11 | 8 | 27% | 12 | 75% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Chicago, IL: tornado warnings | 15 | 3 | 80% | 15 | 60% | 13 min |
| NWS Chicago, IL: severe thunderstorm warnings | 148 | 102 | 31% | 466 | 77% | 26 min |
| NWS Chicago, IL: flash flood warnings | 19 | 8 | 58% | 33 | 79% | 95 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 4, 3:43 AM CST | Winter Weather Advisory | LOT | 41 hr |
| Jan 5, 9:34 AM CST | Snow Squall Warning | LOT | 56 min |
| Jan 7, 2:17 PM CST | Winter Weather Advisory | LOT | 34 hr |
| Jan 18, 2:39 PM CST | Winter Storm Watch | LOT | 13 hr |
| Jan 19, 3:12 AM CST | Winter Weather Advisory | LOT | 39 hr |
| Jan 22, 9:21 AM CST | Winter Storm Watch | LOT | 10 hr |
| Jan 22, 9:21 AM CST | Winter Weather Advisory | LOT | 32 hr |
| Jan 23, 3:17 PM CST | Winter Weather Advisory | LOT | 22 hr |
| Jan 25, 3:13 AM CST | Wind Chill Advisory | LOT | 31 hr |
| Jan 27, 9:13 PM CST | Winter Weather Advisory | LOT | 24 hr |
| Jan 31, 3:41 AM CST | Winter Storm Watch | LOT | 23 hr |
| Jan 31, 2:07 PM CST | Winter Storm Warning | LOT | 3 days |
| Feb 2, 1:13 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 2, 7:11 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 15, 3:02 PM CST | Winter Storm Watch | LOT | 13 hr |
| Feb 16, 3:24 AM CST | Wind Advisory | LOT | 15 hr |
| Feb 16, 3:55 AM CST | Winter Storm Warning | LOT | 44 hr |
| Feb 16, 3:04 PM CST | Lakeshore Flood Advisory | LOT | 39 hr |
| Feb 17, 2:42 AM CST | Areal Flood Advisory | LOT | 9 hr |
| Feb 17, 11:22 AM CST | River Flood Watch | LOT | 24 hr |
| Feb 17, 1:12 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 18, 10:26 AM CST | Winter Weather Advisory | LOT | 23 hr |
| Feb 18, 11:21 AM CST | River Flood Warning | LOT | 21 days |
| Feb 21, 2:01 PM CST | Flood Watch | LOT | 22 hr |
| Feb 23, 2:50 PM CST | Winter Weather Advisory | LOT | 39 hr |
| Mar 5, 3:25 AM CST | Wind Advisory | LOT | 30 hr |
| Mar 5, 11:53 PM CST | Mesoscale Discussion | SPC | 67 min |
| Mar 11, 2:33 AM CST | Winter Weather Advisory | LOT | 6 hr |
| Mar 25, 3:03 AM CDT | Wind Advisory | LOT | 19 hr |
| Mar 25, 5:20 PM CDT | Severe Thunderstorm Warning | LOT | 40 min |
| Apr 5, 4:10 AM CDT | Dense Fog Advisory | LOT | 11 hr |
| Apr 13, 1:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 13, 2:08 PM CDT | Wind Advisory | LOT | 21 hr |
| Apr 14, 10:41 AM CDT | High Wind Warning | LOT | 8 hr |
| Apr 26, 3:20 AM CDT | Freeze Warning | LOT | 29 hr |
| Apr 30, 9:12 PM CDT | Special Weather Statement | LOT | 33 min |
| May 19, 1:56 AM CDT | Dense Fog Advisory | LOT | 7 hr |
| May 20, 10:48 AM CDT | Special Weather Statement | LOT | 57 min |
| May 20, 12:05 PM CDT | Wind Advisory | LOT | 7 hr |
| May 20, 7:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 3:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 26, 3:29 PM CDT | Beach Hazards Statement | LOT | 37 hr |
| Jun 7, 8:06 AM CDT | Beach Hazards Statement | LOT | 8 hr |
| Jun 12, 3:37 PM CDT | Heat Advisory | LOT | 3 days |
| Jun 13, 5:51 PM CDT | Tornado Watch | SPC | 3 hr |
| Jun 13, 7:28 PM CDT | Tornado Warning | LOT | 47 min |
| Jun 13, 8:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 13, 8:10 PM CDT | Severe Thunderstorm Warning | LOT | 20 min |
| Jun 14, 3:46 AM CDT | Excessive Heat Warning | LOT | 40 hr |
| Jun 17, 2:18 PM CDT | Beach Hazards Statement | LOT | 25 hr |
| Jul 2, 4:03 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Jul 4, 2:22 PM CDT | Heat Advisory | LOT | 30 hr |
| Jul 4, 8:07 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 4, 11:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 5, 1:02 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 5, 3:54 AM CDT | Flood Watch | LOT | 23 hr |
| Jul 5, 4:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 10:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 5, 11:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 3:44 PM CDT | Beach Hazards Statement | LOT | 54 hr |
| Jul 13, 3:07 AM CDT | Beach Hazards Statement | LOT | 24 hr |
| Jul 21, 5:32 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 1:06 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:01 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 23, 4:58 AM CDT | Severe Thunderstorm Warning | LOT | 62 min |
| Jul 23, 5:35 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 23, 10:49 AM CDT | Special Weather Statement | LOT | 41 min |
| Jul 23, 2:28 PM CDT | Flood Watch | LOT | 20 hr |
| Jul 27, 4:06 PM CDT | Special Weather Statement | LOT | 39 min |
| Aug 2, 2:18 PM CDT | Heat Advisory | LOT | 25 hr |
| Aug 3, 1:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 3, 1:25 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 2:17 PM CDT | Severe Thunderstorm Warning | LOT | 43 min |
| Aug 3, 2:56 PM CDT | Severe Thunderstorm Warning | LOT | 79 min |
| Aug 3, 3:43 PM CDT | Beach Hazards Statement | LOT | 32 hr |
| Aug 7, 12:53 PM CDT | Severe Thunderstorm Warning | LOT | 51 min |
| Aug 7, 3:37 PM CDT | Beach Hazards Statement | LOT | 48 hr |
| Aug 10, 3:39 AM CDT | Beach Hazards Statement | LOT | 54 hr |
| Aug 16, 3:56 AM CDT | Beach Hazards Statement | LOT | 18 hr |
| Aug 21, 3:23 AM CDT | Beach Hazards Statement | LOT | 34 hr |
| Aug 25, 4:46 AM CDT | Beach Hazards Statement | LOT | 41 hr |
| Aug 29, 10:12 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 29, 12:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 1:11 PM CDT | Special Weather Statement | LOT | 2 hr |
| Aug 29, 1:17 PM CDT | Severe Thunderstorm Warning | LOT | 43 min |
| Aug 29, 1:29 PM CDT | Severe Thunderstorm Warning | LOT | 61 min |
| Aug 29, 1:39 PM CDT | Severe Thunderstorm Warning | LOT | 51 min |
| Aug 29, 1:44 PM CDT | Severe Thunderstorm Warning | LOT | 46 min |
| Aug 29, 1:59 PM CDT | Severe Thunderstorm Warning | LOT | 16 min |
| Sep 2, 2:53 PM CDT | Beach Hazards Statement | LOT | 67 hr |
| Sep 8, 4:35 AM CDT | Dense Fog Advisory | LOT | 3 hr |
| Sep 10, 4:09 AM CDT | Beach Hazards Statement | LOT | 59 hr |
| Sep 11, 10:46 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Sep 12, 3:52 PM CDT | Special Weather Statement | LOT | 53 min |
| Sep 12, 4:03 PM CDT | Beach Hazards Statement | LOT | 23 hr |
| Sep 14, 5:09 AM CDT | Dense Fog Advisory | LOT | 3 hr |
| Sep 15, 2:36 AM CDT | Dense Fog Advisory | LOT | 6 hr |
| Sep 21, 4:04 AM CDT | Beach Hazards Statement | LOT | 48 hr |
| Sep 24, 3:08 PM CDT | Beach Hazards Statement | LOT | 4 days |
| Oct 7, 3:06 AM CDT | Frost Advisory | LOT | 29 hr |
| Oct 13, 2:26 PM CDT | Freeze Warning | LOT | 13 hr |
| Oct 16, 3:01 PM CDT | Lakeshore Flood Advisory | LOT | 60 hr |
| Oct 17, 3:36 AM CDT | Wind Advisory | LOT | 23 hr |
| Oct 17, 3:46 AM CDT | Winter Weather Advisory | LOT | 16 hr |
| Oct 31, 3:07 AM CDT | Dense Fog Advisory | LOT | 9 hr |
| Oct 31, 9:17 PM CDT | Dense Fog Advisory | LOT | 13 hr |
| Nov 4, 3:18 AM CDT | Wind Advisory | LOT | 40 hr |
| Nov 5, 2:21 AM CDT | High Wind Warning | LOT | 17 hr |
| Nov 16, 9:38 AM CST | Winter Weather Advisory | LOT | 9 hr |
| Nov 29, 3:40 AM CST | Wind Advisory | LOT | 19 hr |
| Dec 2, 3:39 AM CST | Wind Advisory | LOT | 29 hr |
| Dec 10, 8:40 PM CST | Dense Fog Advisory | LOT | 6 hr |
| Dec 19, 2:30 PM CST | Winter Storm Watch | LOT | 44 hr |
| Dec 21, 10:41 AM CST | Blizzard Warning | LOT | 67 hr |
| Dec 21, 10:41 AM CST | Winter Storm Warning | LOT | 3 days |
| Dec 22, 3:39 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 24, 1:05 PM CST | Wind Chill Advisory | LOT | 21 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 | 11 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 6 |
| Flooding | |
| River Flood Warning | 1 |
| Flood Watch | 3 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 1 |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 11 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
| Beach Hazards Statement | 16 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.