Alert archive / Indiana / Lawrence County
Weather alerts in Lawrence County, Indiana, 2020
84 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lawrence County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 84
- Warnings
- 41
- Watches
- 8
- Advisories
- 14
- Busiest month
- March14 alerts
- Busiest day
- January 10, 20206 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lawrence County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 11 | 15% | 10 | 60% | 13 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 5 | 0 | 100% | 4 | 0% | |
| NWS Indianapolis, IN: severe thunderstorm warnings | 133 | 100 | 25% | 346 | 68% | 18 min |
| NWS Indianapolis, IN: flash flood warnings | 11 | 7 | 36% | 9 | 100% | 39 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 3, 9:36 PM EST | River Flood Warning | IND | 61 hr |
| Jan 8, 3:35 PM EST | Flood Watch | IND | 72 hr |
| Jan 10, 7:03 AM EST | Areal Flood Advisory | IND | 3 hr |
| Jan 10, 8:32 AM EST | River Flood Warning | IND | 21 days |
| Jan 10, 8:32 AM EST | River Flood Warning | IND | 10 days |
| Jan 10, 9:55 AM EST | Areal Flood Advisory | IND | 17 hr |
| Jan 10, 10:25 AM EST | River Flood Warning | IND | 10 days |
| Jan 10, 10:25 AM EST | River Flood Warning | IND | 21 days |
| Jan 11, 8:42 AM EST | Areal Flood Warning | IND | 21 hr |
| Jan 14, 10:30 PM EST | Dense Fog Advisory | IND | 14 hr |
| Jan 17, 9:30 PM EST | River Flood Warning | IND | 4 days |
| Feb 10, 10:52 AM EST | River Flood Warning | IND | 21 days |
| Feb 13, 1:06 PM EST | River Flood Warning | IND | 7 days |
| Feb 13, 1:06 PM EST | River Flood Warning | IND | 6 days |
| Mar 18, 2:49 PM EDT | River Flood Warning | IND | 21 days |
| Mar 18, 11:02 PM EDT | River Flood Warning | IND | 9 days |
| Mar 18, 11:02 PM EDT | River Flood Warning | IND | 9 days |
| Mar 18, 11:02 PM EDT | River Flood Warning | IND | 9 days |
| Mar 19, 4:08 AM EDT | Flash Flood Watch | IND | 27 hr |
| Mar 19, 4:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Mar 19, 6:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Mar 20, 3:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 20, 5:51 AM EDT | Special Weather Statement | IND | 39 min |
| Mar 26, 12:59 PM EDT | River Flood Warning | IND | 21 days |
| Mar 28, 11:51 AM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Mar 28, 12:15 PM EDT | Severe Thunderstorm Warning | IND | 30 min |
| Mar 28, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 28, 10:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Apr 8, 6:52 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 8, 7:24 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 8, 8:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 8, 8:59 PM EDT | Severe Thunderstorm Warning | IND | 46 min |
| Apr 8, 9:36 PM EDT | Severe Thunderstorm Warning | IND | 39 min |
| Apr 9, 1:26 PM EDT | Freeze Warning | IND | 20 hr |
| Apr 10, 3:33 AM EDT | Frost Advisory | IND | 27 hr |
| Apr 12, 3:57 AM EDT | Wind Advisory | IND | 36 hr |
| Apr 14, 3:29 AM EDT | Freeze Warning | IND | 30 hr |
| Apr 15, 3:57 AM EDT | Freeze Warning | IND | 29 hr |
| Apr 17, 2:59 AM EDT | Freeze Warning | IND | 31 hr |
| May 3, 12:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| May 7, 3:39 AM EDT | Freeze Watch | IND | 24 hr |
| May 8, 3:38 AM EDT | Freeze Warning | IND | 29 hr |
| May 17, 7:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 18, 7:24 PM EDT | River Flood Warning | IND | 4 days |
| May 30, 4:09 PM EDT | River Flood Warning | IND | 22 hr |
| Jun 4, 11:11 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 4, 3:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 4:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 9, 5:11 PM EDT | Special Weather Statement | IND | 34 min |
| Jun 10, 11:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 10, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 1:12 PM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Jul 11, 7:10 PM EDT | Severe Thunderstorm Warning | IND | 35 min |
| Jul 11, 7:36 PM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Jul 11, 9:08 PM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Jul 12, 12:53 AM EDT | Severe Thunderstorm Warning | IND | 37 min |
| Jul 12, 1:21 AM EDT | Special Weather Statement | IND | 39 min |
| Jul 18, 3:06 PM EDT | Heat Advisory | IND | 29 hr |
| Jul 19, 6:45 PM EDT | Severe Thunderstorm Warning | IND | 30 min |
| Jul 19, 7:58 PM EDT | Severe Thunderstorm Warning | IND | 32 min |
| Jul 22, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 1:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 30, 6:59 PM EDT | Areal Flood Warning | IND | 6 hr |
| Jul 31, 4:42 AM EDT | Areal Flood Warning | IND | 12 hr |
| Aug 1, 6:05 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 10, 6:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 7:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 8:01 PM EDT | Severe Thunderstorm Warning | IND | 59 min |
| Aug 10, 8:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 1, 5:34 AM EDT | Dense Fog Advisory | IND | 4 hr |
| Oct 4, 3:42 AM EDT | Frost Advisory | IND | 29 hr |
| Oct 15, 3:35 AM EDT | Freeze Warning | IND | 30 hr |
| Oct 16, 4:02 AM EDT | Frost Advisory | IND | 29 hr |
| Oct 17, 3:53 AM EDT | Red Flag Warning | IND | 16 hr |
| Oct 22, 2:19 AM EDT | Dense Fog Advisory | IND | 7 hr |
| Oct 23, 2:30 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 23, 4:58 PM EDT | Special Weather Statement | IND | 47 min |
| Oct 23, 5:09 PM EDT | Severe Thunderstorm Warning | IND | 36 min |
| Oct 23, 5:25 PM EDT | Flash Flood Warning | IND | 3 hr |
| Oct 28, 4:07 AM EDT | Flood Watch | IND | 31 hr |
| Oct 29, 6:12 AM EDT | Areal Flood Advisory | IND | 5 hr |
| Nov 14, 4:16 AM EST | Wind Advisory | IND | 39 hr |
| Nov 18, 3:17 PM EST | Wind Advisory | IND | 26 hr |
| Nov 19, 9:22 AM EST | Red Flag Warning | IND | 10 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 | 13 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| River Flood Warning | 16 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 4 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| 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 archive20192021
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.