Alert archive / Indiana / Sullivan County
Weather alerts in Sullivan County, Indiana, 2023
115 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sullivan County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 115
- Warnings
- 30
- Watches
- 17
- Advisories
- 26
- Busiest month
- July21 alerts
- Busiest day
- June 29, 202312 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 2 tornado warnings covering Sullivan County in 2023 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 13 minutes after it went out.
Sullivan County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 2 | 0% | 1 | 100% | 13 min |
| Severe thunderstorm warnings | 11 | 8 | 27% | 4 | 50% | 24 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 72 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 34 | 13 | 62% | 22 | 82% | 11 min |
| NWS Indianapolis, IN: severe thunderstorm warnings | 197 | 131 | 34% | 304 | 78% | 19 min |
| NWS Indianapolis, IN: flash flood warnings | 4 | 1 | 75% | 1 | 100% | 72 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 2, 12:41 AM EST | Dense Fog Advisory | IND | 12 hr |
| Jan 11, 2:44 PM EST | Dense Fog Advisory | IND | 17 hr |
| Jan 23, 3:37 AM EST | Winter Storm Watch | IND | 23 hr |
| Jan 24, 3:02 AM EST | Winter Storm Warning | IND | 34 hr |
| Jan 25, 12:44 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 30, 2:57 AM EST | Winter Weather Advisory | IND | 11 hr |
| Jan 31, 12:45 AM EST | Winter Weather Advisory | IND | 7 hr |
| Feb 8, 3:42 AM EST | Wind Advisory | IND | 39 hr |
| Feb 14, 3:18 AM EST | Wind Advisory | IND | 31 hr |
| Feb 21, 2:52 PM EST | Wind Advisory | IND | 29 hr |
| Feb 22, 11:59 AM EST | Mesoscale Discussion | SPC | 91 min |
| Feb 22, 3:27 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 22, 5:30 PM EST | Special Weather Statement | IND | 30 min |
| Feb 23, 9:27 PM EST | River Flood Warning | IND | 20 days |
| Feb 23, 9:27 PM EST | River Flood Warning | IND | 18 days |
| Feb 26, 3:21 AM EST | Wind Advisory | IND | 40 hr |
| Feb 26, 12:10 PM EST | River Flood Warning | IND | 19 days |
| Mar 2, 2:42 AM EST | Flood Watch | IND | 43 hr |
| Mar 2, 2:48 PM EST | Wind Advisory | IND | 32 hr |
| Mar 3, 1:40 PM EST | High Wind Warning | IND | 9 hr |
| Mar 3, 10:49 PM EST | Areal Flood Warning | IND | 16 hr |
| Mar 22, 3:33 PM EDT | Flood Watch | IND | 60 hr |
| Mar 23, 12:22 PM EDT | River Flood Warning | IND | 14 days |
| Mar 23, 12:22 PM EDT | River Flood Warning | IND | 21 days |
| Mar 23, 12:22 PM EDT | River Flood Warning | IND | 17 days |
| Mar 24, 12:28 PM EDT | Wind Advisory | IND | 31 hr |
| Mar 24, 10:14 PM EDT | Areal Flood Warning | IND | 22 hr |
| Mar 31, 4:09 AM EDT | Wind Advisory | IND | 23 hr |
| Mar 31, 7:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Mar 31, 7:59 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 31, 9:58 PM EDT | Special Weather Statement | IND | 32 min |
| Mar 31, 10:08 PM EDT | Tornado Warning | IND | 52 min |
| Mar 31, 10:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Mar 31, 10:37 PM EDT | Severe Thunderstorm Warning | IND | 23 min |
| Mar 31, 10:37 PM EDT | Tornado Warning | IND | 38 min |
| Mar 31, 10:57 PM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Apr 1, 2:44 AM EDT | Wind Advisory | IND | 15 hr |
| Apr 1, 10:36 AM EDT | High Wind Warning | IND | 5 hr |
| Apr 4, 2:24 PM EDT | Wind Advisory | IND | 27 hr |
| Apr 5, 6:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 5, 10:09 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 5, 10:25 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 5, 11:41 AM EDT | Special Weather Statement | IND | 49 min |
| Apr 5, 12:03 PM EDT | Special Weather Statement | IND | 27 min |
| Apr 5, 3:02 PM EDT | Areal Flood Advisory | IND | 5 hr |
| Apr 15, 10:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 17, 3:34 PM EDT | Frost Advisory | IND | 17 hr |
| Apr 19, 4:14 PM EDT | Red Flag Warning | IND | 28 hr |
| Apr 22, 2:52 PM EDT | Frost Advisory | IND | 18 hr |
| Apr 23, 3:05 AM EDT | Freeze Warning | IND | 30 hr |
| May 7, 3:21 AM EDT | Mesoscale Discussion | SPC | 114 min |
| May 7, 7:20 AM EDT | Special Weather Statement | IND | 40 min |
| May 7, 6:39 PM EDT | Severe Thunderstorm Warning | IND | 36 min |
| May 8, 8:27 AM EDT | Special Weather Statement | IND | 63 min |
| May 31, 8:46 PM EDT | Special Weather Statement | IND | 29 min |
| Jun 11, 2:35 PM EDT | Special Weather Statement | IND | 40 min |
| Jun 25, 4:44 AM EDT | Special Weather Statement | IND | 31 min |
| Jun 25, 1:34 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 29, 6:55 AM EDT | Special Weather Statement | IND | 35 min |
| Jun 29, 6:59 AM EDT | Severe Thunderstorm Warning | IND | 46 min |
| Jun 29, 7:06 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 29, 8:22 AM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 29, 9:12 AM EDT | Areal Flood Advisory | IND | 5 hr |
| Jun 29, 11:10 AM EDT | Special Weather Statement | IND | 35 min |
| Jun 29, 11:22 AM EDT | Severe Thunderstorm Warning | IND | 38 min |
| Jun 29, 11:39 AM EDT | Severe Thunderstorm Warning | IND | 32 min |
| Jun 29, 1:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 29, 2:32 PM EDT | Severe Thunderstorm Warning | IND | 43 min |
| Jun 29, 3:06 PM EDT | Severe Thunderstorm Warning | IND | 39 min |
| Jul 1, 4:07 AM EDT | Special Weather Statement | IND | 38 min |
| Jul 1, 4:29 AM EDT | Special Weather Statement | IND | 61 min |
| Jul 1, 5:37 AM EDT | Special Weather Statement | IND | 38 min |
| Jul 1, 6:21 AM EDT | Areal Flood Advisory | IND | 4 hr |
| Jul 1, 7:30 AM EDT | Flash Flood Warning | IND | 3 hr |
| Jul 1, 4:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 1, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 6:42 PM EDT | Severe Thunderstorm Warning | IND | 48 min |
| Jul 1, 7:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 1, 7:18 PM EDT | Severe Thunderstorm Warning | IND | 42 min |
| Jul 1, 7:29 PM EDT | Special Weather Statement | IND | 31 min |
| Jul 1, 7:48 PM EDT | Flash Flood Warning | IND | 3 hr |
| Jul 2, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 17, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 17, 4:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 24, 2:57 AM EDT | Severe Thunderstorm Warning | IND | 48 min |
| Jul 26, 3:04 AM EDT | Heat Advisory | IND | 67 hr |
| Jul 29, 3:13 AM EDT | Special Weather Statement | IND | 47 min |
| Jul 29, 3:48 AM EDT | Special Weather Statement | IND | 42 min |
| Jul 29, 5:01 AM EDT | Special Weather Statement | IND | 44 min |
| Jul 29, 4:46 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 5, 2:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 5, 5:46 PM EDT | Tornado Watch | SPC | 5 hr |
| Aug 6, 8:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 9:37 PM EDT | Tornado Watch | SPC | 7 hr |
| Aug 9, 11:58 AM EDT | Flood Watch | IND | 12 hr |
| Aug 9, 1:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 6:48 AM EDT | Special Weather Statement | IND | 27 min |
| Aug 19, 2:58 PM EDT | Heat Advisory | IND | 5 days |
| Aug 21, 4:06 AM EDT | Excessive Heat Watch | IND | 47 hr |
| Aug 22, 3:23 AM EDT | Excessive Heat Warning | IND | 4 days |
| Aug 22, 5:26 AM EDT | Dense Fog Advisory | IND | 4 hr |
| Aug 25, 4:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 25, 7:55 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 25, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 11:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 25, 11:28 PM EDT | Special Weather Statement | IND | 62 min |
| Aug 26, 1:55 AM EDT | Areal Flood Advisory | IND | 6 hr |
| Sep 26, 3:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 28, 4:30 AM EDT | Dense Fog Advisory | IND | 6 hr |
| Oct 22, 3:31 AM EDT | Frost Advisory | IND | 29 hr |
| Oct 29, 3:44 AM EDT | Freeze Watch | IND | 22 hr |
| Oct 30, 2:13 AM EDT | Freeze Warning | IND | 32 hr |
| Nov 5, 2:37 AM EST | Dense Fog Advisory | IND | 7 hr |
| Nov 7, 6:51 AM EST | Dense Fog Advisory | IND | 2 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 archive20222024
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.