Alert archive / Ohio / Mercer County

Weather alerts in Mercer County, Ohio, 2022

104 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Mercer County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
104
Warnings
16
Watches
19
Advisories
29
Busiest month
July18 alerts
Busiest day
June 12, 20225 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Mercer County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings7529%771%24 min
Flash flood warnings00

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Wilmington, OH: tornado warnings26677%2245%7 min
NWS Wilmington, OH: severe thunderstorm warnings21014033%51870%24 min
NWS Wilmington, OH: flash flood warnings251348%3577%84 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.

IssuedProductOfficeLasted
Jan 4, 3:27 PM ESTWind AdvisoryILN24 hr
Jan 8, 5:36 PM ESTWinter Weather AdvisoryILN6 hr
Jan 22, 2:44 PM ESTWinter Weather AdvisoryILN24 hr
Jan 25, 3:21 AM ESTWind Chill AdvisoryILN32 hr
Jan 26, 9:38 PM ESTWind Chill AdvisoryILN11 hr
Jan 31, 3:04 PM ESTWinter Storm WatchILN42 hr
Feb 1, 10:11 AM ESTWinter Storm WarningILN64 hr
Feb 4, 2:32 AM ESTWinter Weather AdvisoryILN11 hr
Feb 15, 1:49 PM ESTWind AdvisoryILN29 hr
Feb 16, 9:21 AM ESTFlood WatchILN35 hr
Feb 17, 4:11 AM ESTWinter Weather AdvisoryILN21 hr
Feb 24, 3:56 AM ESTWinter Weather AdvisoryILN24 hr
Feb 24, 6:24 PM ESTMesoscale DiscussionSPC4 hr
Mar 5, 2:52 PM ESTWind AdvisoryILN22 hr
Mar 6, 3:11 AM ESTSpecial Weather StatementILN64 min
Mar 6, 3:11 AM ESTMesoscale DiscussionSPC94 min
Mar 6, 3:25 AM ESTSevere Thunderstorm WarningILN80 min
Mar 6, 3:27 AM ESTSevere Thunderstorm WatchSPC3 hr
Mar 23, 12:40 PM EDTMesoscale DiscussionSPC2 hr
Mar 23, 1:53 PM EDTSevere Thunderstorm WatchSPC6 hr
Mar 23, 4:14 PM EDTMesoscale DiscussionSPC2 hr
Mar 29, 2:23 PM EDTWind AdvisoryILN41 hr
Mar 30, 11:06 PM EDTHigh Wind WarningILN5 hr
Apr 12, 5:12 AM EDTDense Fog AdvisoryILN5 hr
Apr 14, 3:41 AM EDTWind AdvisoryILN16 hr
Apr 15, 3:06 AM EDTWind AdvisoryILN17 hr
Apr 26, 3:48 AM EDTFrost AdvisoryILN29 hr
Apr 26, 2:47 PM EDTFreeze WarningILN18 hr
Apr 27, 3:55 AM EDTFrost AdvisoryILN24 hr
May 3, 4:25 PM EDTSpecial Weather StatementILN35 min
May 3, 4:49 PM EDTSpecial Weather StatementILN26 min
May 14, 2:07 PM EDTMesoscale DiscussionSPC2 hr
May 14, 5:45 PM EDTSpecial Weather StatementILN30 min
May 21, 8:46 AM EDTSpecial Weather StatementILN59 min
May 21, 1:00 PM EDTMesoscale DiscussionSPC2 hr
May 21, 1:51 PM EDTSevere Thunderstorm WatchSPC7 hr
May 21, 4:30 PM EDTMesoscale DiscussionSPC90 min
May 25, 4:37 PM EDTMesoscale DiscussionSPC113 min
May 25, 9:02 PM EDTSpecial Weather StatementILN28 min
Jun 6, 3:35 PM EDTMesoscale DiscussionSPC2 hr
Jun 8, 4:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 8, 5:20 PM EDTSpecial Weather StatementILN25 min
Jun 8, 7:02 PM EDTSevere Thunderstorm WarningILN43 min
Jun 12, 4:12 PM EDTMesoscale DiscussionSPC2 hr
Jun 12, 4:36 PM EDTSpecial Weather StatementILN24 min
Jun 12, 4:46 PM EDTSevere Thunderstorm WarningILN44 min
Jun 12, 5:27 PM EDTSpecial Weather StatementILN18 min
Jun 12, 5:46 PM EDTSpecial Weather StatementILN29 min
Jun 13, 3:21 AM EDTExcessive Heat WatchILN12 hr
Jun 13, 2:20 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 13, 3:41 PM EDTExcessive Heat WarningILN52 hr
Jun 13, 10:02 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 13, 10:47 PM EDTSevere Thunderstorm Warning Considerable damage threatILN58 min
Jun 13, 11:42 PM EDTMesoscale DiscussionSPC2 hr
Jun 14, 3:40 AM EDTExcessive Heat WatchILN12 hr
Jun 15, 3:29 PM EDTHeat AdvisoryILN29 hr
Jul 4, 3:33 PM EDTHeat AdvisoryILN29 hr
Jul 5, 5:03 AM EDTSpecial Weather StatementILN42 min
Jul 5, 9:40 AM EDTAreal Flood AdvisoryILN3 hr
Jul 5, 10:57 AM EDTSpecial Weather StatementILN48 min
Jul 5, 7:31 PM EDTMesoscale DiscussionSPC89 min
Jul 5, 9:27 PM EDTSpecial Weather StatementILN33 min
Jul 5, 9:38 PM EDTSevere Thunderstorm WarningILN39 min
Jul 6, 12:42 AM EDTFlood WatchILN15 hr
Jul 6, 12:58 AM EDTMesoscale DiscussionSPC2 hr
Jul 13, 1:26 PM EDTMesoscale DiscussionSPC3 hr
Jul 17, 9:52 AM EDTFlood WatchILN26 hr
Jul 20, 12:52 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 7:10 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 8:28 AM EDTMesoscale DiscussionSPC92 min
Jul 23, 9:05 AM EDTSpecial Weather StatementILN55 min
Jul 23, 9:18 AM EDTSevere Thunderstorm WarningILN57 min
Jul 23, 9:59 AM EDTSevere Thunderstorm WarningILN50 min
Jul 24, 4:38 PM EDTMesoscale DiscussionSPC2 hr
Aug 2, 3:11 PM EDTHeat AdvisoryILN29 hr
Aug 3, 6:45 PM EDTMesoscale DiscussionSPC90 min
Aug 20, 1:25 PM EDTMesoscale DiscussionSPC2 hr
Aug 20, 1:48 PM EDTSpecial Weather StatementILN42 min
Aug 20, 2:24 PM EDTSpecial Weather StatementILN51 min
Aug 29, 5:22 PM EDTSpecial Weather StatementILN23 min
Aug 29, 5:39 PM EDTSpecial Weather StatementILN36 min
Aug 29, 6:09 PM EDTMesoscale DiscussionSPC2 hr
Sep 4, 3:18 AM EDTFlood WatchILN44 hr
Sep 14, 4:20 AM EDTDense Fog AdvisoryILN5 hr
Oct 7, 3:24 AM EDTFreeze WatchILN12 hr
Oct 7, 3:15 PM EDTFreeze WarningILN18 hr
Oct 8, 2:55 PM EDTFrost AdvisoryILN18 hr
Oct 14, 3:39 AM EDTRed Flag WarningILN16 hr
Oct 16, 3:37 AM EDTFreeze WatchILN36 hr
Oct 19, 3:34 AM EDTFreeze WatchILN10 hr
Oct 19, 1:37 PM EDTFreeze WarningILN20 hr
Nov 2, 10:27 PM EDTDense Fog AdvisoryILN13 hr
Nov 4, 2:58 PM EDTWind AdvisoryILN29 hr
Nov 12, 9:10 AM ESTMesoscale DiscussionSPC3 hr
Dec 2, 2:30 PM ESTWind AdvisoryILN19 hr
Dec 7, 4:30 AM ESTDense Fog AdvisoryILN6 hr
Dec 17, 9:45 PM ESTWinter Weather AdvisoryILN5 hr
Dec 20, 3:11 PM ESTWinter Storm WatchILN21 hr
Dec 21, 12:12 PM ESTWind Chill WatchILN15 hr
Dec 21, 12:12 PM ESTWinter Storm WarningILN67 hr
Dec 22, 3:15 AM ESTWind Chill WarningILN52 hr
Dec 22, 4:39 PM ESTMesoscale DiscussionSPC4 hr
Dec 23, 3:56 AM ESTWind Chill AdvisoryILN56 hr
Dec 24, 6:50 AM ESTWinter Weather AdvisoryILN6 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 archive20212023

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.