Alert archive / Ohio / Richland County
Weather alerts in Richland County, Ohio, 2020
111 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Richland County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 111
- Warnings
- 25
- Watches
- 12
- Advisories
- 25
- Busiest month
- May23 alerts
- Busiest day
- November 15, 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.
0 of 1 tornado warnings covering Richland County in 2020 had a tornado report inside them.
Richland County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 9 | 36% | 7 | 100% | 27 min |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Cleveland, OH: tornado warnings | 8 | 2 | 75% | 3 | 100% | 15 min |
| NWS Cleveland, OH: severe thunderstorm warnings | 157 | 113 | 28% | 384 | 87% | 24 min |
| NWS Cleveland, OH: flash flood warnings | 22 | 6 | 73% | 15 | 87% | 68 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 10, 3:23 PM EST | Wind Advisory | CLE | 37 hr |
| Jan 11, 2:06 PM EST | High Wind Warning | CLE | 19 hr |
| Jan 15, 12:40 AM EST | Dense Fog Advisory | CLE | 9 hr |
| Jan 17, 3:18 AM EST | Winter Weather Advisory | CLE | 36 hr |
| Feb 5, 3:42 AM EST | Winter Weather Advisory | CLE | 33 hr |
| Feb 6, 2:59 PM EST | Winter Weather Advisory | CLE | 37 hr |
| Feb 11, 3:37 PM EST | Winter Weather Advisory | CLE | 42 hr |
| Feb 27, 12:51 AM EST | Special Weather Statement | CLE | 114 min |
| Feb 27, 5:33 PM EST | Special Weather Statement | CLE | 57 min |
| Mar 3, 7:02 PM EST | Special Weather Statement | CLE | 43 min |
| Mar 5, 10:56 PM EST | Special Weather Statement | CLE | 64 min |
| Mar 20, 12:18 PM EDT | Severe Thunderstorm Warning | CLE | 42 min |
| Mar 27, 12:07 PM EDT | Flash Flood Watch | CLE | 41 hr |
| Mar 28, 10:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Mar 28, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 28, 3:55 PM EDT | Wind Advisory | CLE | 28 hr |
| Mar 28, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Mar 29, 1:23 AM EDT | Special Weather Statement | CLE | 52 min |
| Apr 7, 1:02 PM EDT | Special Weather Statement | CLE | 43 min |
| Apr 7, 9:07 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 7, 10:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 8, 12:17 AM EDT | Special Weather Statement | CLE | 58 min |
| Apr 8, 12:45 AM EDT | Areal Flood Advisory | CLE | 4 hr |
| Apr 11, 3:18 PM EDT | High Wind Watch | CLE | 23 hr |
| Apr 12, 2:10 PM EDT | Wind Advisory | CLE | 28 hr |
| Apr 21, 3:33 AM EDT | Special Weather Statement | CLE | 72 min |
| May 6, 2:19 PM EDT | Frost Advisory | CLE | 19 hr |
| May 7, 2:33 PM EDT | Freeze Warning | CLE | 43 hr |
| May 10, 12:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 4:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 10, 4:27 PM EDT | Special Weather Statement | CLE | 48 min |
| May 10, 6:36 PM EDT | Mesoscale Discussion | SPC | 24 min |
| May 11, 3:50 AM EDT | Frost Advisory | CLE | 28 hr |
| May 11, 12:41 PM EDT | Freeze Warning | CLE | 20 hr |
| May 12, 12:22 PM EDT | Frost Advisory | CLE | 21 hr |
| May 14, 4:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 5:20 PM EDT | Severe Thunderstorm Warning | CLE | 40 min |
| May 14, 5:44 PM EDT | Special Weather Statement | CLE | 46 min |
| May 14, 6:06 PM EDT | Severe Thunderstorm Warning | CLE | 39 min |
| May 15, 1:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 15, 11:05 PM EDT | Dense Fog Advisory | CLE | 11 hr |
| May 17, 2:38 PM EDT | Flood Watch | CLE | 45 hr |
| May 18, 9:19 PM EDT | Areal Flood Advisory | CLE | 6 hr |
| May 18, 10:41 PM EDT | Areal Flood Warning | CLE | 6 hr |
| May 19, 4:17 AM EDT | Areal Flood Warning | CLE | 15 hr |
| May 19, 4:44 AM EDT | Areal Flood Warning | CLE | 15 hr |
| May 29, 10:47 AM EDT | Mesoscale Discussion | SPC | 118 min |
| May 29, 1:01 PM EDT | Areal Flood Warning | CLE | 6 hr |
| May 29, 3:15 PM EDT | Areal Flood Advisory | CLE | 4 hr |
| Jun 4, 12:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 4, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 4, 1:29 PM EDT | Severe Thunderstorm Warning | CLE | 46 min |
| Jun 10, 1:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 10, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 10, 5:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 10, 6:25 PM EDT | Severe Thunderstorm Warning | CLE | 65 min |
| Jun 18, 4:26 PM EDT | Special Weather Statement | CLE | 49 min |
| Jun 21, 6:18 PM EDT | Special Weather Statement | CLE | 27 min |
| Jun 21, 6:27 PM EDT | Severe Thunderstorm Warning | CLE | 25 min |
| Jun 21, 6:54 PM EDT | Severe Thunderstorm Warning | CLE | 51 min |
| Jun 21, 7:01 PM EDT | Special Weather Statement | CLE | 59 min |
| Jun 21, 8:30 PM EDT | Special Weather Statement | CLE | 60 min |
| Jun 26, 10:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 26, 11:15 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 27, 12:35 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 27, 2:48 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 8, 3:22 PM EDT | Heat Advisory | CLE | 30 hr |
| Jul 10, 12:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 10, 4:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 16, 12:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 18, 2:52 PM EDT | Heat Advisory | CLE | 29 hr |
| Jul 19, 3:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 19, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 27, 3:37 PM EDT | Special Weather Statement | CLE | 68 min |
| Jul 27, 3:48 PM EDT | Severe Thunderstorm Warning | CLE | 42 min |
| Jul 30, 7:43 PM EDT | Special Weather Statement | CLE | 92 min |
| Aug 1, 2:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Aug 1, 6:03 PM EDT | Special Weather Statement | CLE | 27 min |
| Aug 1, 6:36 PM EDT | Special Weather Statement | CLE | 54 min |
| Aug 1, 7:58 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 25, 12:38 PM EDT | Special Weather Statement | CLE | 52 min |
| Aug 25, 12:42 PM EDT | Severe Thunderstorm Warning | CLE | 48 min |
| Aug 25, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 25, 5:13 PM EDT | Special Weather Statement | CLE | 47 min |
| Aug 28, 1:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 28, 1:51 PM EDT | Severe Thunderstorm Warning | CLE | 54 min |
| Aug 28, 1:55 PM EDT | Special Weather Statement | CLE | 65 min |
| Aug 28, 2:03 PM EDT | Severe Thunderstorm Warning | CLE | 57 min |
| Aug 28, 5:25 PM EDT | Special Weather Statement | CLE | 35 min |
| Sep 7, 3:45 PM EDT | Special Weather Statement | CLE | 30 min |
| Sep 7, 4:29 PM EDT | Tornado Warning | CLE | 31 min |
| Sep 7, 4:54 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Sep 10, 3:15 AM EDT | Dense Fog Advisory | CLE | 7 hr |
| Oct 2, 1:32 PM EDT | Frost Advisory | CLE | 18 hr |
| Oct 12, 9:51 PM EDT | Special Weather Statement | CLE | 39 min |
| Oct 16, 3:03 PM EDT | Freeze Warning | CLE | 18 hr |
| Oct 23, 1:56 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 23, 5:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 23, 7:45 PM EDT | Special Weather Statement | CLE | 45 min |
| Oct 23, 7:55 PM EDT | Severe Thunderstorm Warning | CLE | 39 min |
| Nov 14, 3:26 AM EST | Wind Advisory | CLE | 40 hr |
| Nov 15, 3:31 AM EST | High Wind Warning | CLE | 19 hr |
| Nov 15, 9:58 AM EST | Mesoscale Discussion | SPC | 92 min |
| Nov 15, 11:33 AM EST | Mesoscale Discussion | SPC | 57 min |
| Nov 15, 11:38 AM EST | Severe Thunderstorm Warning | CLE | 67 min |
| Nov 15, 11:51 AM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Nov 15, 12:19 PM EST | Severe Thunderstorm Warning | CLE | 54 min |
| Nov 18, 2:11 PM EST | Wind Advisory | CLE | 27 hr |
| Nov 19, 1:41 PM EST | Red Flag Warning | CLE | 5 hr |
| Nov 29, 3:18 PM EST | Winter Weather Advisory | CLE | 63 hr |
| Dec 23, 2:54 PM EST | Winter Weather Advisory | CLE | 40 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 | 14 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 9 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 25 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| 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.