Alert archive / Indiana / Marion County
Weather alerts in Marion County, Indiana, 2016
142 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marion County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 142
- Warnings
- 52
- Watches
- 19
- Advisories
- 33
- Busiest month
- August31 alerts
- Busiest day
- August 24, 201612 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 8 tornado warnings covering Marion County in 2016 had a tornado report inside them.
Marion County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 8 | 1 | 88% | 0 | ||
| Severe thunderstorm warnings | 22 | 16 | 27% | 41 | 63% | 25 min |
| Flash flood warnings | 3 | 2 | 33% | 13 | 100% | 77 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 53 | 10 | 81% | 19 | 74% | 18 min |
| NWS Indianapolis, IN: severe thunderstorm warnings | 143 | 73 | 49% | 225 | 64% | 19 min |
| NWS Indianapolis, IN: flash flood warnings | 22 | 12 | 45% | 26 | 100% | 73 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 4:00 PM EST | Winter Weather Advisory | IND | 18 hr |
| Jan 11, 3:51 PM EST | Winter Weather Advisory | IND | 23 hr |
| Jan 17, 3:55 AM EST | Wind Chill Advisory | IND | 32 hr |
| Jan 19, 4:11 AM EST | Winter Weather Advisory | IND | 29 hr |
| Feb 13, 3:58 PM EST | Winter Weather Advisory | IND | 35 hr |
| Feb 18, 2:44 PM EST | Wind Advisory | IND | 28 hr |
| Feb 23, 4:05 PM EST | Winter Weather Advisory | IND | 49 hr |
| Feb 24, 10:23 PM EST | River Flood Warning | IND | 25 hr |
| Feb 28, 5:03 AM EST | Wind Advisory | IND | 14 hr |
| Mar 9, 11:23 AM EST | River Flood Warning | IND | 3 days |
| Mar 10, 12:19 AM EST | Dense Fog Advisory | IND | 5 hr |
| Mar 15, 2:57 PM EDT | Wind Advisory | IND | 29 hr |
| Mar 24, 1:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 27, 3:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 27, 5:42 PM EDT | Severe Thunderstorm Warning | IND | 48 min |
| Mar 27, 6:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 8:08 PM EDT | Severe Thunderstorm Warning | IND | 37 min |
| Mar 27, 8:17 PM EDT | Severe Thunderstorm Warning | IND | 28 min |
| Mar 27, 8:39 PM EDT | Severe Thunderstorm Warning | IND | 51 min |
| Mar 31, 1:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 31, 6:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 1, 2:29 PM EDT | Freeze Watch | IND | 13 hr |
| Apr 1, 2:29 PM EDT | Wind Advisory | IND | 26 hr |
| Apr 2, 3:45 AM EDT | Freeze Warning | IND | 29 hr |
| Apr 2, 4:33 PM EDT | High Wind Warning | IND | 3 hr |
| Apr 3, 3:20 PM EDT | Freeze Watch | IND | 13 hr |
| Apr 4, 3:50 AM EDT | Freeze Warning | IND | 29 hr |
| Apr 6, 8:59 AM EDT | Wind Advisory | IND | 11 hr |
| Apr 7, 3:44 AM EDT | Freeze Watch | IND | 12 hr |
| Apr 7, 3:26 PM EDT | Freeze Watch | IND | 12 hr |
| Apr 7, 3:26 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 8, 3:34 AM EDT | Freeze Warning | IND | 31 hr |
| Apr 8, 4:12 PM EDT | Freeze Watch | IND | 11 hr |
| Apr 9, 3:40 AM EDT | Freeze Warning | IND | 28 hr |
| Apr 10, 10:30 AM EDT | River Flood Warning | IND | 4 days |
| Apr 11, 3:05 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 12, 3:28 AM EDT | Freeze Watch | IND | 12 hr |
| Apr 12, 3:36 PM EDT | Freeze Warning | IND | 17 hr |
| Apr 26, 1:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 26, 4:27 PM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Apr 26, 4:51 PM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Apr 28, 3:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 1, 6:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 1, 7:58 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 1, 8:56 PM EDT | Severe Thunderstorm Warning | IND | 64 min |
| May 1, 9:14 PM EDT | Tornado Warning | IND | 46 min |
| May 1, 9:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 1, 9:48 PM EDT | Severe Thunderstorm Warning | IND | 42 min |
| May 11, 4:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 11, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 11, 8:30 PM EDT | Severe Thunderstorm Warning | IND | 30 min |
| May 15, 12:41 PM EDT | Frost Advisory | IND | 19 hr |
| May 26, 10:05 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 1, 2:32 PM EDT | Special Weather Statement | IND | 28 min |
| Jun 1, 3:38 PM EDT | Special Weather Statement | IND | 52 min |
| Jun 6, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 15, 3:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 15, 3:38 PM EDT | Severe Thunderstorm Warning | IND | 37 min |
| Jun 15, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 15, 4:23 PM EDT | Severe Thunderstorm Warning | IND | 37 min |
| Jun 15, 4:30 PM EDT | Areal Flood Advisory | IND | 2 hr |
| Jun 15, 4:45 PM EDT | Severe Thunderstorm Warning | IND | 30 min |
| Jun 15, 6:16 PM EDT | Flash Flood Warning | IND | 3 hr |
| Jun 15, 9:40 PM EDT | Areal Flood Warning | IND | 3 hr |
| Jun 16, 12:28 AM EDT | Areal Flood Warning | IND | 6 hr |
| Jun 20, 4:03 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 20, 7:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 10:33 PM EDT | Tornado Watch | SPC | 8 hr |
| Jun 23, 12:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 23, 2:42 AM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Jun 23, 3:44 AM EDT | Areal Flood Advisory | IND | 5 hr |
| Jun 26, 3:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 3, 3:44 AM EDT | Flash Flood Watch | IND | 19 hr |
| Jul 3, 10:59 PM EDT | Flash Flood Watch | IND | 16 hr |
| Jul 6, 8:53 AM EDT | Areal Flood Advisory | IND | 3 hr |
| Jul 13, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 13, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 13, 4:42 PM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Jul 13, 5:13 PM EDT | Special Weather Statement | IND | 32 min |
| Jul 13, 6:01 PM EDT | Severe Thunderstorm Warning | IND | 29 min |
| Jul 13, 6:26 PM EDT | Severe Thunderstorm Warning | IND | 34 min |
| Jul 13, 6:47 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Jul 13, 6:56 PM EDT | Severe Thunderstorm Warning | IND | 34 min |
| Jul 13, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 8:01 PM EDT | Severe Thunderstorm Warning | IND | 44 min |
| Jul 13, 9:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 18, 4:36 AM EDT | Special Weather Statement | IND | 54 min |
| Jul 18, 6:25 AM EDT | Areal Flood Warning | IND | 6 hr |
| Jul 18, 12:27 PM EDT | Areal Flood Warning | IND | 3 hr |
| Jul 20, 2:53 PM EDT | Heat Advisory | IND | 4 days |
| Jul 28, 7:45 PM EDT | Areal Flood Advisory | IND | 2 hr |
| Jul 29, 12:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 29, 5:20 PM EDT | Areal Flood Advisory | IND | 115 min |
| Jul 29, 7:13 PM EDT | Areal Flood Warning | IND | 2 hr |
| Aug 4, 2:51 PM EDT | Special Weather Statement | IND | 24 min |
| Aug 4, 3:44 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 13, 3:59 AM EDT | Flash Flood Watch | IND | 3 days |
| Aug 15, 5:44 PM EDT | Tornado Warning | IND | 31 min |
| Aug 18, 6:36 AM EDT | Dense Fog Advisory | IND | 3 hr |
| Aug 24, 2:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 24, 3:10 PM EDT | Tornado Watch | SPC | 8 hr |
| Aug 24, 3:13 PM EDT | Severe Thunderstorm Warning | IND | 32 min |
| Aug 24, 3:25 PM EDT | Tornado Warning | IND | 35 min |
| Aug 24, 3:54 PM EDT | Tornado Warning | IND | 51 min |
| Aug 24, 4:40 PM EDT | Severe Thunderstorm Warning | IND | 35 min |
| Aug 24, 4:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 24, 4:45 PM EDT | Areal Flood Advisory | IND | 2 hr |
| Aug 24, 4:49 PM EDT | Tornado Warning | IND | 26 min |
| Aug 24, 5:09 PM EDT | Tornado Warning | IND | 21 min |
| Aug 24, 5:13 PM EDT | Areal Flood Warning | IND | 3 hr |
| Aug 24, 5:15 PM EDT | Tornado Warning | IND | 30 min |
| Aug 24, 8:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 26, 8:28 AM EDT | Special Weather Statement | IND | 47 min |
| Aug 26, 8:40 AM EDT | Severe Thunderstorm Warning | IND | 35 min |
| Aug 26, 8:53 AM EDT | Tornado Warning | IND | 22 min |
| Aug 26, 9:19 AM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 26, 5:24 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 26, 6:12 PM EDT | Flash Flood Warning | IND | 3 hr |
| Aug 26, 9:03 PM EDT | Areal Flood Warning | IND | 9 hr |
| Aug 27, 8:38 AM EDT | River Flood Warning | IND | 24 hr |
| Aug 27, 10:19 AM EDT | Flash Flood Warning | IND | 4 hr |
| Aug 28, 5:16 PM EDT | Special Weather Statement | IND | 59 min |
| Aug 28, 5:32 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 30, 7:54 PM EDT | Special Weather Statement | IND | 36 min |
| Aug 30, 8:11 PM EDT | Areal Flood Advisory | IND | 2 hr |
| Sep 8, 2:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 9, 3:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 6:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 7:30 PM EDT | Tornado Watch | SPC | 5 hr |
| Sep 9, 9:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 9, 11:54 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Sep 10, 8:28 AM EDT | Areal Flood Advisory | IND | 3 hr |
| Sep 16, 3:18 PM EDT | Special Weather Statement | IND | 42 min |
| Oct 19, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 18, 5:41 PM EST | Severe Thunderstorm Warning | IND | 49 min |
| Nov 18, 6:31 PM EST | Mesoscale Discussion | SPC | 59 min |
| Dec 14, 4:59 AM EST | Wind Chill Advisory | IND | 30 hr |
| Dec 16, 3:20 PM EST | Winter Weather Advisory | IND | 18 hr |
| Dec 17, 3:57 AM EST | Winter Weather Advisory | IND | 32 hr |
| Dec 25, 7:02 PM EST | Dense Fog Advisory | IND | 8 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 | 22 |
| Tornado Warning | 8 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 9 |
| Flooding | |
| Areal Flood Warning | 7 |
| Flash Flood Warning | 3 |
| River Flood Warning | 4 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 14 |
| Winter | |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 7 |
| Freeze Watch | 6 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.