Alert archive / Ohio / Guernsey County
Weather alerts in Guernsey County, Ohio, 2026
176 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Guernsey County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 176
- Warnings
- 86
- Watches
- 37
- Advisories
- 22
- Busiest month
- August36 alerts
- Busiest day
- June 6, 202611 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 5 tornado warnings covering Guernsey County in 2026 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Guernsey County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 1 | 0% | |
| Severe thunderstorm warnings | 43 | 29 | 33% | 25 | 84% | 25 min |
| Flash flood warnings | 13 | 10 | 23% | 6 | 100% | 80 min |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pittsburgh, PA: tornado warnings | 62 | 18 | 71% | 38 | 74% | 11 min |
| NWS Pittsburgh, PA: severe thunderstorm warnings | 372 | 274 | 26% | 1,080 | 89% | 24 min |
| NWS Pittsburgh, PA: flash flood warnings | 153 | 112 | 27% | 358 | 94% | 70 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 1, 12:33 AM EST | Snow Squall Warning | PBZ | 42 min |
| Jan 1, 1:00 AM EST | Snow Squall Warning | PBZ | 60 min |
| Jan 17, 11:00 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 18, 1:18 PM EST | Cold Weather Advisory | PBZ | 47 hr |
| Jan 22, 2:04 AM EST | Winter Storm Watch | PBZ | 23 hr |
| Jan 22, 12:49 PM EST | Cold Weather Advisory | PBZ | 45 hr |
| Jan 23, 12:53 AM EST | Winter Storm Warning | PBZ | 3 days |
| Jan 25, 10:00 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 25, 11:57 AM EST | Extreme Cold Watch | PBZ | 12 hr |
| Jan 25, 11:52 PM EST | Extreme Cold Warning | PBZ | 3 days |
| Jan 27, 12:02 AM EST | Cold Weather Advisory | PBZ | 35 hr |
| Jan 27, 11:34 PM EST | Cold Weather Advisory | PBZ | 59 hr |
| Jan 29, 11:28 PM EST | Cold Weather Advisory | PBZ | 36 hr |
| Jan 30, 11:23 PM EST | Cold Weather Advisory | PBZ | 36 hr |
| Feb 5, 12:04 PM EST | Cold Weather Advisory | PBZ | 70 hr |
| Feb 6, 8:55 PM EST | Snow Squall Warning | PBZ | 35 min |
| Feb 15, 8:35 PM EST | Dense Fog Advisory | PBZ | 15 hr |
| Feb 18, 8:13 PM EST | Dense Fog Advisory | PBZ | 13 hr |
| Mar 4, 12:49 AM EST | Dense Fog Advisory | PBZ | 10 hr |
| Mar 5, 3:38 AM EST | Dense Fog Advisory | PBZ | 6 hr |
| Mar 5, 2:12 PM EST | Areal Flood Warning | PBZ | 6 hr |
| Mar 6, 4:29 AM EST | Dense Fog Advisory | PBZ | 6 hr |
| Mar 7, 12:57 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 7, 1:23 PM EST | Tornado Watch | SPC | 5 hr |
| Mar 7, 2:28 PM EST | Severe Thunderstorm Warning | PBZ | 47 min |
| Mar 7, 2:32 PM EST | Severe Thunderstorm Warning | PBZ | 43 min |
| Mar 7, 2:40 PM EST | Severe Thunderstorm Warning | PBZ | 35 min |
| Mar 11, 10:10 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 10:35 AM EDT | Tornado Watch | SPC | 8 hr |
| Mar 11, 1:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Mar 11, 2:02 PM EDT | Flood Watch | PBZ | 8 hr |
| Mar 11, 2:45 PM EDT | Severe Thunderstorm Warning | PBZ | 25 min |
| Mar 12, 1:38 AM EDT | Wind Advisory | PBZ | 46 hr |
| Mar 13, 12:41 AM EDT | High Wind Warning | PBZ | 28 hr |
| Mar 15, 1:55 AM EDT | Wind Advisory | PBZ | 46 hr |
| Mar 22, 3:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Mar 22, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 22, 5:36 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Mar 22, 6:11 PM EDT | Severe Thunderstorm Warning | PBZ | 49 min |
| Mar 22, 6:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 22, 6:53 PM EDT | Severe Thunderstorm Warning | PBZ | 25 min |
| Mar 22, 8:51 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Mar 22, 9:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 22, 9:24 PM EDT | Severe Thunderstorm Warning | PBZ | 51 min |
| Mar 22, 9:52 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Mar 22, 10:44 PM EDT | Severe Thunderstorm Warning | PBZ | 23 min |
| Mar 26, 4:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Mar 26, 4:52 PM EDT | Tornado Watch | SPC | 6 hr |
| Mar 26, 9:05 PM EDT | Severe Thunderstorm Warning | PBZ | 40 min |
| Mar 26, 9:38 PM EDT | Severe Thunderstorm Warning | PBZ | 35 min |
| Mar 26, 10:13 PM EDT | Severe Thunderstorm Warning | PBZ | 47 min |
| Mar 26, 10:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Mar 27, 6:33 AM EDT | Areal Flood Warning | PBZ | 25 hr |
| Apr 1, 5:30 AM EDT | Areal Flood Warning | PBZ | 6 hr |
| Apr 1, 1:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 3, 4:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 12:34 PM EDT | Frost Advisory | PBZ | 21 hr |
| Apr 6, 1:02 AM EDT | Freeze Watch | PBZ | 9 hr |
| Apr 6, 9:50 AM EDT | Freeze Warning | PBZ | 24 hr |
| Apr 7, 12:03 PM EDT | Freeze Warning | PBZ | 22 hr |
| Apr 16, 2:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 18, 12:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 18, 12:56 PM EDT | Freeze Watch | PBZ | 12 hr |
| Apr 19, 12:29 AM EDT | Freeze Warning | PBZ | 32 hr |
| Apr 19, 12:17 PM EDT | Freeze Watch | PBZ | 13 hr |
| Apr 20, 12:48 AM EDT | Freeze Warning | PBZ | 32 hr |
| Apr 22, 6:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 1, 12:53 PM EDT | Frost Advisory | PBZ | 19 hr |
| May 2, 12:27 PM EDT | Freeze Warning | PBZ | 21 hr |
| May 20, 7:50 AM EDT | Mesoscale Discussion | SPC | 115 min |
| May 22, 8:50 AM EDT | Flood Watch | PBZ | 41 hr |
| May 24, 5:14 PM EDT | Flood Watch | PBZ | 7 hr |
| May 24, 5:18 PM EDT | Flash Flood Warning | PBZ | 5 hr |
| May 25, 2:11 AM EDT | Dense Fog Advisory | PBZ | 7 hr |
| May 26, 1:06 PM EDT | Flood Watch | PBZ | 33 hr |
| Jun 6, 11:07 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 12:12 PM EDT | Severe Thunderstorm Warning | PBZ | 63 min |
| Jun 6, 1:04 PM EDT | Severe Thunderstorm Warning | PBZ | 56 min |
| Jun 6, 5:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 6, 5:47 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Jun 6, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 6, 6:30 PM EDT | Severe Thunderstorm Warning | PBZ | 45 min |
| Jun 6, 6:37 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Jun 6, 6:41 PM EDT | Severe Thunderstorm Warning | PBZ | 49 min |
| Jun 6, 7:01 PM EDT | Tornado Warning | PBZ | 15 min |
| Jun 6, 8:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 6, 8:44 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Jun 11, 12:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 2:28 PM EDT | Severe Thunderstorm Warning | PBZ | 47 min |
| Jun 11, 3:04 PM EDT | Severe Thunderstorm Warning | PBZ | 35 min |
| Jun 11, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Jun 14, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 14, 1:40 PM EDT | Mesoscale Discussion | SPC | 5 min |
| Jun 14, 4:40 PM EDT | Severe Thunderstorm Warning | PBZ | 65 min |
| Jun 14, 4:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 14, 5:18 PM EDT | Severe Thunderstorm Warning | PBZ | 57 min |
| Jun 22, 4:06 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jun 25, 5:07 PM EDT | Severe Thunderstorm Warning | PBZ | 42 min |
| Jun 25, 5:18 PM EDT | Tornado Warning | PBZ | 20 min |
| Jun 25, 5:42 PM EDT | Tornado Warning | PBZ | 33 min |
| Jun 25, 5:52 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jun 25, 5:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 6:09 PM EDT | Severe Thunderstorm Warning | PBZ | 66 min |
| Jun 26, 1:03 PM EDT | Flood Watch | PBZ | 23 hr |
| Jun 29, 12:53 PM EDT | Heat Advisory | PBZ | 5 days |
| Jun 30, 1:30 AM EDT | Extreme Heat Warning | PBZ | 5 days |
| Jul 4, 1:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 1:59 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 4, 6:38 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Jul 5, 11:03 AM EDT | Flood Watch | PBZ | 11 hr |
| Jul 6, 2:09 AM EDT | Flood Watch | PBZ | 21 hr |
| Jul 10, 1:56 AM EDT | Flood Watch | PBZ | 20 hr |
| Jul 10, 12:51 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 14, 12:45 PM EDT | Heat Advisory | PBZ | 31 hr |
| Jul 18, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 6:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 21, 3:11 AM EDT | Flood Watch | PBZ | 20 hr |
| Jul 21, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 21, 2:21 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Jul 21, 2:30 PM EDT | Flash Flood Warning | PBZ | 6 hr |
| Jul 21, 2:37 PM EDT | Flash Flood Warning | PBZ | 9 hr |
| Jul 21, 2:53 PM EDT | Severe Thunderstorm Warning | PBZ | 52 min |
| Jul 21, 2:59 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Jul 21, 3:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 21, 8:17 PM EDT | Areal Flood Warning | PBZ | 15 hr |
| Jul 21, 11:58 PM EDT | Areal Flood Warning | PBZ | 11 hr |
| Aug 8, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 9:29 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 9:59 AM EDT | Severe Thunderstorm Warning | PBZ | 61 min |
| Aug 10, 10:07 AM EDT | Flood Watch | PBZ | 41 hr |
| Aug 10, 10:56 AM EDT | Severe Thunderstorm Warning | PBZ | 55 min |
| Aug 10, 11:28 AM EDT | Severe Thunderstorm Warning | PBZ | 51 min |
| Aug 10, 4:38 PM EDT | Severe Thunderstorm Warning | PBZ | 25 min |
| Aug 11, 12:04 AM EDT | Flash Flood Warning | PBZ | 3 hr |
| Aug 11, 7:18 AM EDT | Flash Flood Warning | PBZ | 7 hr |
| Aug 11, 7:35 AM EDT | Severe Thunderstorm Warning | PBZ | 40 min |
| Aug 11, 8:09 AM EDT | Severe Thunderstorm Warning | PBZ | 51 min |
| Aug 11, 8:45 AM EDT | Flash Flood Warning | PBZ | 6 hr |
| Aug 11, 11:19 AM EDT | Severe Thunderstorm Warning | PBZ | 41 min |
| Aug 11, 2:03 PM EDT | Areal Flood Warning | PBZ | 13 hr |
| Aug 15, 1:55 AM EDT | Dense Fog Advisory | PBZ | 8 hr |
| Aug 15, 9:57 AM EDT | Flood Watch | PBZ | 38 hr |
| Aug 16, 11:56 AM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 16, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 16, 1:34 PM EDT | Severe Thunderstorm Warning | PBZ | 41 min |
| Aug 16, 2:14 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Aug 16, 2:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 2:37 PM EDT | Tornado Warning | PBZ | 23 min |
| Aug 16, 2:47 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Aug 16, 6:22 PM EDT | Flash Flood Warning | PBZ | 4 hr |
| Aug 16, 10:11 PM EDT | Areal Flood Warning | PBZ | 6 hr |
| Aug 16, 10:48 PM EDT | Areal Flood Warning | PBZ | 32 hr |
| Aug 19, 12:36 PM EDT | Flood Watch | PBZ | 25 hr |
| Aug 20, 7:05 AM EDT | Flash Flood Warning | PBZ | 3 hr |
| Aug 20, 7:48 AM EDT | Flash Flood Warning | PBZ | 3 hr |
| Aug 20, 10:57 AM EDT | Areal Flood Warning | PBZ | 11 hr |
| Aug 20, 10:58 AM EDT | Areal Flood Warning | PBZ | 11 hr |
| Aug 21, 1:50 AM EDT | Dense Fog Advisory | PBZ | 7 hr |
| Aug 21, 9:17 AM EDT | River Flood Warning | PBZ | 69 hr |
| Aug 22, 11:38 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 22, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 3:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 1, 12:59 PM EDT | Heat Advisory | PBZ | 55 hr |
| Sep 3, 3:03 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 3, 3:47 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Sep 4, 9:35 AM EDT | Flood Watch | PBZ | 7 hr |
| Sep 9, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 9, 9:47 PM EDT | Tornado Warning | PBZ | 15 min |
| Sep 11, 1:26 PM EDT | Flood Watch | PBZ | 40 hr |
| Sep 16, 11:21 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Sep 17, 12:07 AM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Sep 20, 9:02 AM EDT | Flash Flood Warning | PBZ | 3 hr |
| Sep 20, 11:49 AM EDT | Areal Flood Warning | PBZ | 7 hr |
| Sep 20, 12:00 PM EDT | Flood Watch | PBZ | 56 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 | 44 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 14 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 31 |
| Flooding | |
| Areal Flood Warning | 11 |
| Flash Flood Warning | 13 |
| River Flood Warning | 1 |
| Flood Watch | 15 |
| Winter | |
| Snow Squall Warning | 3 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 5 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 3 |
| Cold Weather Advisory | 7 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.