Alert archive / Indiana / Porter County
Weather alerts in Porter County, Indiana, 2013
141 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 141
- Warnings
- 24
- Watches
- 22
- Advisories
- 35
- Busiest month
- June36 alerts
- Busiest day
- April 18, 20137 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Porter County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 11 | 31% | 12 | 100% | 37 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Chicago, IL: tornado warnings | 17 | 6 | 65% | 25 | 56% | 13 min |
| NWS Chicago, IL: severe thunderstorm warnings | 135 | 86 | 36% | 425 | 79% | 29 min |
| NWS Chicago, IL: flash flood warnings | 32 | 12 | 63% | 37 | 86% | 123 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 12, 4:31 PM CST | Winter Weather Advisory | LOT | 11 hr |
| Jan 12, 6:17 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 19, 10:58 AM CST | Wind Advisory | LOT | 16 hr |
| Jan 21, 3:57 AM CST | Wind Chill Advisory | LOT | 30 hr |
| Jan 23, 10:54 PM CST | Lake Effect Snow Advisory | LOT | 12 hr |
| Jan 26, 4:21 AM CST | Winter Storm Watch | LOT | 24 hr |
| Jan 26, 3:14 PM CST | Freezing Rain Advisory | LOT | 30 hr |
| Jan 27, 3:31 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 28, 3:28 PM CST | Flood Watch | LOT | 37 hr |
| Jan 28, 3:54 PM CST | Dense Fog Advisory | LOT | 11 hr |
| Jan 28, 11:41 PM CST | Special Weather Statement | LOT | 34 min |
| Jan 28, 11:45 PM CST | Severe Thunderstorm Warning | LOT | 30 min |
| Jan 29, 10:33 PM CST | Areal Flood Advisory | LOT | 10 hr |
| Feb 3, 12:13 PM CST | Winter Weather Advisory | LOT | 27 hr |
| Feb 10, 7:30 PM CST | Wind Advisory | LOT | 23 hr |
| Feb 20, 3:00 PM CST | Winter Weather Advisory | LOT | 46 hr |
| Feb 26, 7:03 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 3, 3:11 PM CST | Winter Storm Watch | LOT | 20 hr |
| Mar 4, 4:06 AM CST | Winter Storm Warning | LOT | 47 hr |
| Mar 5, 1:36 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 18, 5:17 AM CDT | Winter Weather Advisory | LOT | 6 hr |
| Apr 16, 4:31 PM CDT | Flood Watch | LOT | 59 hr |
| Apr 17, 3:45 PM CDT | Special Weather Statement | LOT | 60 min |
| Apr 17, 4:35 PM CDT | Severe Thunderstorm Warning | LOT | 25 min |
| Apr 17, 9:14 PM CDT | River Flood Watch | LOT | 28 hr |
| Apr 17, 9:14 PM CDT | River Flood Watch | LOT | 28 hr |
| Apr 18, 4:01 AM CDT | Wind Advisory | LOT | 5 hr |
| Apr 18, 5:58 AM CDT | Flash Flood Warning | LOT | 8 hr |
| Apr 18, 7:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 18, 8:09 AM CDT | Severe Thunderstorm Warning | LOT | 96 min |
| Apr 18, 8:31 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 19, 12:36 AM CDT | River Flood Warning | LOT | 11 days |
| Apr 19, 12:36 AM CDT | River Flood Warning | LOT | 11 days |
| Apr 28, 5:43 PM CDT | Dense Fog Advisory | LOT | 12 hr |
| May 12, 4:07 AM CDT | Frost Advisory | LOT | 27 hr |
| May 20, 10:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 20, 11:15 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 20, 11:26 PM CDT | Severe Thunderstorm Warning | LOT | 79 min |
| May 24, 3:35 AM CDT | Beach Hazards Statement | LOT | 18 hr |
| May 27, 1:54 PM CDT | Flash Flood Watch | LOT | 40 hr |
| May 28, 8:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| May 28, 8:36 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 28, 9:08 PM CDT | Special Weather Statement | LOT | 67 min |
| May 30, 4:09 AM CDT | Flash Flood Watch | LOT | 66 hr |
| May 30, 5:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 30, 10:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| May 30, 10:23 PM CDT | Severe Thunderstorm Warning | LOT | 82 min |
| Jun 2, 10:06 AM CDT | Beach Hazards Statement | LOT | 9 hr |
| Jun 10, 6:05 AM CDT | Areal Flood Advisory | LOT | 4 hr |
| Jun 10, 5:52 PM CDT | Dense Fog Advisory | LOT | 14 hr |
| Jun 11, 4:31 PM CDT | Special Weather Statement | LOT | 29 min |
| Jun 12, 3:01 AM CDT | Flash Flood Watch | LOT | 24 hr |
| Jun 12, 10:26 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 12, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 12, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 12, 5:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 12, 6:12 PM CDT | Severe Thunderstorm Warning | LOT | 78 min |
| Jun 12, 7:23 PM CDT | Severe Thunderstorm Warning | LOT | 67 min |
| Jun 12, 8:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 12, 11:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 13, 2:40 AM CDT | Beach Hazards Statement | LOT | 34 hr |
| Jun 17, 4:27 PM CDT | Beach Hazards Statement | LOT | 36 hr |
| Jun 21, 1:36 PM CDT | Special Weather Statement | LOT | 24 min |
| Jun 21, 2:03 PM CDT | Special Weather Statement | LOT | 57 min |
| Jun 21, 3:02 PM CDT | Special Weather Statement | LOT | 28 min |
| Jun 24, 3:37 AM CDT | Flash Flood Watch | LOT | 60 hr |
| Jun 24, 2:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 3:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 6:00 PM CDT | Mesoscale Discussion | SPC | 75 min |
| Jun 24, 6:01 PM CDT | Severe Thunderstorm Warning | LOT | 74 min |
| Jun 25, 2:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 25, 7:52 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 25, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 5:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 25, 7:46 PM CDT | Severe Thunderstorm Warning | LOT | 29 min |
| Jun 26, 7:25 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Jun 27, 6:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 6:53 PM CDT | Severe Thunderstorm Warning | LOT | 52 min |
| Jun 27, 9:20 PM CDT | River Flood Advisory | LOT | 36 hr |
| Jun 27, 9:20 PM CDT | River Flood Advisory | LOT | 36 hr |
| Jun 28, 3:24 PM CDT | Beach Hazards Statement | LOT | 4 days |
| Jun 28, 3:49 PM CDT | Special Weather Statement | LOT | 41 min |
| Jun 29, 9:14 PM CDT | River Flood Advisory | LOT | 46 hr |
| Jul 10, 9:10 AM CDT | Severe Thunderstorm Warning | LOT | 50 min |
| Jul 10, 9:42 AM CDT | Severe Thunderstorm Warning | LOT | 33 min |
| Jul 10, 10:35 AM CDT | Special Weather Statement | LOT | 25 min |
| Jul 17, 3:29 PM CDT | Heat Advisory | LOT | 52 hr |
| Jul 22, 3:52 AM CDT | Lakeshore Flood Statement | LOT | 25 hr |
| Jul 22, 3:56 PM CDT | Beach Hazards Statement | LOT | 53 hr |
| Jul 26, 3:02 PM CDT | Beach Hazards Statement | LOT | 67 hr |
| Aug 2, 2:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 2, 3:40 PM CDT | Special Weather Statement | LOT | 35 min |
| Aug 7, 7:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 7, 1:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 7, 7:50 PM CDT | Beach Hazards Statement | LOT | 25 hr |
| Aug 12, 3:36 PM CDT | Beach Hazards Statement | LOT | 45 hr |
| Aug 12, 6:28 PM CDT | Severe Thunderstorm Warning | LOT | 47 min |
| Aug 22, 6:44 PM CDT | Beach Hazards Statement | LOT | 15 hr |
| Aug 23, 1:19 AM CDT | Dense Fog Advisory | LOT | 8 hr |
| Aug 30, 2:07 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 30, 5:14 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Aug 30, 7:10 PM CDT | Severe Thunderstorm Warning | LOT | 65 min |
| Aug 30, 7:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Aug 30, 8:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 31, 1:45 PM CDT | Special Weather Statement | LOT | 45 min |
| Sep 1, 3:46 AM CDT | Beach Hazards Statement | LOT | 54 hr |
| Sep 1, 4:27 AM CDT | Dense Fog Advisory | LOT | 6 hr |
| Sep 11, 3:05 PM CDT | Beach Hazards Statement | LOT | 62 hr |
| Sep 11, 3:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Sep 15, 3:31 AM CDT | Beach Hazards Statement | LOT | 54 hr |
| Sep 18, 9:25 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Sep 18, 11:06 PM CDT | Areal Flood Advisory | LOT | 6 hr |
| Sep 20, 3:47 PM CDT | Beach Hazards Statement | LOT | 36 hr |
| Sep 29, 4:04 AM CDT | Beach Hazards Statement | LOT | 11 hr |
| Oct 3, 5:17 PM CDT | Special Weather Statement | LOT | 43 min |
| Oct 3, 5:32 PM CDT | Special Weather Statement | LOT | 43 min |
| Oct 3, 9:30 PM CDT | Special Weather Statement | LOT | 60 min |
| Oct 5, 12:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 5, 7:29 PM CDT | Areal Flood Advisory | LOT | 4 hr |
| Oct 21, 3:47 AM CDT | Freeze Watch | LOT | 12 hr |
| Oct 21, 3:21 PM CDT | Freeze Warning | LOT | 17 hr |
| Oct 30, 8:49 PM CDT | Areal Flood Advisory | LOT | 6 hr |
| Nov 10, 2:38 PM CST | Lake Effect Snow Watch | LOT | 25 hr |
| Nov 11, 3:52 PM CST | Lake Effect Snow Advisory | LOT | 20 hr |
| Nov 16, 2:59 PM CST | Wind Advisory | LOT | 29 hr |
| Nov 17, 3:09 AM CST | High Wind Warning | LOT | 17 hr |
| Nov 17, 8:40 AM CST | Tornado Watch | SPC | 7 hr |
| Nov 17, 10:01 AM CST | Mesoscale Discussion | SPC | 119 min |
| Nov 17, 11:57 AM CST | Mesoscale Discussion | SPC | 93 min |
| Nov 17, 12:41 PM CST | Severe Thunderstorm Warning | LOT | 64 min |
| Nov 17, 1:13 PM CST | Mesoscale Discussion | SPC | 77 min |
| Nov 17, 1:43 PM CST | Severe Thunderstorm Warning | LOT | 32 min |
| Nov 26, 1:32 AM CST | Lake Effect Snow Watch | LOT | 13 hr |
| Nov 26, 2:35 PM CST | Lake Effect Snow Advisory | LOT | 24 hr |
| Dec 10, 3:46 AM CST | Winter Weather Advisory | LOT | 30 hr |
| Dec 11, 3:46 AM CST | Wind Chill Advisory | LOT | 25 hr |
| Dec 12, 7:50 PM CST | Winter Weather Advisory | LOT | 46 hr |
| Dec 19, 11:39 PM CST | Dense Fog Advisory | LOT | 19 hr |
| Dec 21, 2:20 AM CST | Freezing Rain Advisory | LOT | 14 hr |
| Dec 29, 9:38 AM CST | Freezing Rain Advisory | LOT | 8 hr |
| Dec 30, 2:21 PM CST | Winter Weather Advisory | LOT | 52 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 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.