Alert archive / Ohio / Columbiana County

Weather alerts in Columbiana County, Ohio, 2017

129 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Columbiana County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
129
Warnings
37
Watches
12
Advisories
24
Busiest month
August24 alerts
Busiest day
August 4, 20179 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 1 tornado warnings covering Columbiana County in 2017 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 1 minutes after it went out.

Columbiana County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%1100%1 min
Severe thunderstorm warnings332815%1883%19 min
Flash flood warnings00

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Pittsburgh, PA: tornado warnings14843%1867%11 min
NWS Pittsburgh, PA: severe thunderstorm warnings22518617%51888%21 min
NWS Pittsburgh, PA: flash flood warnings766416%26896%112 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 9, 6:49 PM ESTFreezing Rain AdvisoryPBZ17 hr
Jan 10, 4:45 PM ESTWind AdvisoryPBZ9 hr
Jan 12, 6:39 AM ESTFlash Flood WatchPBZ10 hr
Jan 12, 10:42 AM ESTMesoscale DiscussionSPC3 hr
Jan 12, 1:34 PM ESTSevere Thunderstorm WarningPBZ41 min
Jan 12, 1:50 PM ESTAreal Flood WarningPBZ115 min
Jan 12, 2:14 PM ESTSevere Thunderstorm WarningPBZ46 min
Jan 12, 2:15 PM ESTSevere Thunderstorm WarningPBZ45 min
Jan 14, 2:37 AM ESTWinter Weather AdvisoryPBZ16 hr
Jan 30, 8:13 AM ESTSpecial Weather StatementPBZ62 min
Jan 30, 1:46 PM ESTWinter Weather AdvisoryPBZ21 hr
Feb 8, 9:40 PM ESTMesoscale DiscussionSPC4 hr
Feb 12, 3:40 AM ESTWind AdvisoryPBZ31 hr
Feb 12, 7:02 PM ESTSevere Thunderstorm WarningPBZ58 min
Feb 12, 11:43 PM ESTSpecial Weather StatementPBZ62 min
Feb 24, 8:49 PM ESTMesoscale DiscussionSPC116 min
Feb 25, 12:07 AM ESTSpecial Weather StatementPBZ38 min
Feb 25, 12:45 AM ESTSpecial Weather StatementPBZ45 min
Mar 1, 12:51 AM ESTFlash Flood WatchPBZ12 hr
Mar 1, 2:19 AM ESTMesoscale DiscussionSPC86 min
Mar 1, 12:44 PM ESTWind AdvisoryPBZ17 hr
Mar 1, 3:56 PM ESTMesoscale DiscussionSPC2 hr
Mar 1, 4:26 PM ESTSpecial Weather StatementPBZ64 min
Mar 3, 10:09 AM ESTSpecial Weather StatementPBZ66 min
Mar 3, 11:11 AM ESTSpecial Weather StatementPBZ79 min
Mar 7, 11:52 AM ESTWind AdvisoryPBZ39 hr
Mar 9, 3:43 AM ESTWinter Weather AdvisoryPBZ33 hr
Mar 12, 3:31 PM EDTWinter Weather AdvisoryPBZ44 hr
Mar 17, 5:07 PM EDTSpecial Weather StatementPBZ83 min
Mar 31, 5:21 PM EDTAreal Flood AdvisoryPBZ12 hr
Apr 16, 2:15 PM EDTMesoscale DiscussionSPC3 hr
Apr 19, 8:31 PM EDTSpecial Weather StatementPBZ44 min
Apr 19, 9:14 PM EDTSpecial Weather StatementPBZ46 min
Apr 20, 10:15 AM EDTSpecial Weather StatementPBZ45 min
Apr 20, 2:40 PM EDTMesoscale DiscussionSPC65 min
Apr 27, 3:28 PM EDTMesoscale DiscussionSPC2 hr
Apr 27, 5:28 PM EDTSevere Thunderstorm WarningPBZ47 min
Apr 30, 2:58 PM EDTMesoscale DiscussionSPC2 hr
May 1, 11:59 AM EDTMesoscale DiscussionSPC2 hr
May 1, 12:32 PM EDTTornado WatchSPC4 hr
May 1, 12:42 PM EDTSevere Thunderstorm WarningPBZ63 min
May 1, 1:35 PM EDTSevere Thunderstorm WarningPBZ55 min
May 1, 1:50 PM EDTAreal Flood AdvisoryPBZ3 hr
May 2, 4:37 AM EDTWind AdvisoryPBZ14 hr
May 7, 1:59 PM EDTFreeze WarningPBZ19 hr
May 8, 3:20 AM EDTFrost AdvisoryPBZ30 hr
May 18, 5:07 PM EDTSevere Thunderstorm WarningPBZ38 min
May 28, 4:09 PM EDTMesoscale DiscussionSPC66 min
May 31, 2:05 PM EDTMesoscale DiscussionSPC85 min
May 31, 2:58 PM EDTSevere Thunderstorm WarningPBZ47 min
Jun 5, 3:00 PM EDTMesoscale DiscussionSPC3 hr
Jun 13, 2:32 PM EDTSevere Thunderstorm WarningPBZ43 min
Jun 13, 3:05 PM EDTSevere Thunderstorm WarningPBZ40 min
Jun 13, 3:15 PM EDTSevere Thunderstorm WarningPBZ45 min
Jun 14, 2:20 PM EDTMesoscale DiscussionSPC2 hr
Jun 18, 12:31 PM EDTMesoscale DiscussionSPC119 min
Jun 18, 1:37 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 18, 3:10 PM EDTSevere Thunderstorm WarningPBZ35 min
Jun 18, 4:30 PM EDTMesoscale DiscussionSPC90 min
Jun 22, 12:26 PM EDTFlash Flood WatchPBZ38 hr
Jun 22, 1:18 PM EDTMesoscale DiscussionSPC2 hr
Jun 23, 1:10 PM EDTSpecial Weather StatementPBZ35 min
Jun 23, 1:15 PM EDTMesoscale DiscussionSPC2 hr
Jun 29, 9:47 PM EDTSevere Thunderstorm WarningPBZ43 min
Jun 29, 10:31 PM EDTSevere Thunderstorm WarningPBZ44 min
Jun 29, 10:35 PM EDTSevere Thunderstorm WarningPBZ40 min
Jul 7, 8:02 AM EDTMesoscale DiscussionSPC2 hr
Jul 10, 2:34 PM EDTSpecial Weather StatementPBZ56 min
Jul 10, 2:43 PM EDTSevere Thunderstorm WarningPBZ32 min
Jul 10, 3:08 PM EDTMesoscale DiscussionSPC2 hr
Jul 10, 3:21 PM EDTSpecial Weather StatementPBZ24 min
Jul 10, 3:26 PM EDTSevere Thunderstorm WarningPBZ34 min
Jul 10, 3:44 PM EDTSevere Thunderstorm WarningPBZ46 min
Jul 11, 4:23 PM EDTSevere Thunderstorm WarningPBZ37 min
Jul 13, 9:25 AM EDTFlash Flood WatchPBZ31 hr
Jul 20, 3:50 PM EDTMesoscale DiscussionSPC2 hr
Jul 21, 11:23 PM EDTAreal Flood AdvisoryPBZ3 hr
Jul 22, 8:34 AM EDTMesoscale DiscussionSPC86 min
Jul 28, 7:44 PM EDTAreal Flood AdvisoryPBZ3 hr
Aug 4, 11:38 AM EDTMesoscale DiscussionSPC2 hr
Aug 4, 1:25 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 4, 2:01 PM EDTSevere Thunderstorm WarningPBZ44 min
Aug 4, 3:46 PM EDTMesoscale DiscussionSPC119 min
Aug 4, 4:25 PM EDTSevere Thunderstorm WarningPBZ50 min
Aug 4, 4:59 PM EDTSevere Thunderstorm WarningPBZ31 min
Aug 4, 5:14 PM EDTSpecial Weather StatementPBZ31 min
Aug 4, 5:24 PM EDTSevere Thunderstorm WarningPBZ22 min
Aug 4, 6:35 PM EDTSpecial Weather StatementPBZ40 min
Aug 19, 2:13 PM EDTMesoscale DiscussionSPC3 hr
Aug 19, 2:28 PM EDTSevere Thunderstorm WarningPBZ47 min
Aug 19, 2:45 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 19, 3:10 PM EDTSevere Thunderstorm WarningPBZ50 min
Aug 19, 3:16 PM EDTSevere Thunderstorm WarningPBZ44 min
Aug 19, 4:08 PM EDTSevere Thunderstorm WarningPBZ39 min
Aug 19, 4:43 PM EDTMesoscale DiscussionSPC2 hr
Aug 20, 3:26 AM EDTDense Fog AdvisoryPBZ6 hr
Aug 22, 11:54 AM EDTMesoscale DiscussionSPC66 min
Aug 22, 12:39 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 22, 12:43 PM EDTSevere Thunderstorm WarningPBZ32 min
Aug 22, 12:57 PM EDTSpecial Weather StatementPBZ33 min
Aug 22, 1:02 PM EDTSevere Thunderstorm WarningPBZ43 min
Aug 22, 2:44 PM EDTMesoscale DiscussionSPC91 min
Aug 22, 4:39 PM EDTMesoscale DiscussionSPC66 min
Sep 5, 12:09 AM EDTSpecial Weather StatementPBZ51 min
Sep 5, 12:58 AM EDTSpecial Weather StatementPBZ47 min
Sep 14, 9:08 PM EDTDense Fog AdvisoryPBZ13 hr
Sep 15, 9:30 PM EDTDense Fog AdvisoryPBZ12 hr
Oct 10, 1:40 AM EDTDense Fog AdvisoryPBZ8 hr
Oct 15, 3:03 PM EDTMesoscale DiscussionSPC57 min
Oct 15, 3:29 PM EDTSpecial Weather StatementPBZ61 min
Oct 15, 4:21 PM EDTSpecial Weather StatementPBZ54 min
Oct 16, 11:21 AM EDTFrost AdvisoryPBZ23 hr
Nov 5, 1:59 AM ESTSpecial Weather StatementPBZ31 min
Nov 5, 3:05 AM ESTFlash Flood WatchPBZ25 hr
Nov 5, 4:51 PM ESTMesoscale DiscussionSPC114 min
Nov 5, 5:28 PM ESTSevere Thunderstorm WatchSPC5 hr
Nov 5, 6:05 PM ESTSevere Thunderstorm WarningPBZ55 min
Nov 5, 6:55 PM ESTSevere Thunderstorm WarningPBZ65 min
Nov 5, 7:17 PM ESTTornado WarningPBZ28 min
Nov 5, 8:28 PM ESTSevere Thunderstorm WarningPBZ62 min
Nov 5, 8:50 PM ESTAreal Flood AdvisoryPBZ4 hr
Nov 6, 12:42 AM ESTAreal Flood AdvisoryPBZ3 hr
Nov 6, 5:36 AM ESTAreal Flood WarningPBZ3 hr
Nov 18, 9:57 AM ESTFlood WatchPBZ16 hr
Nov 18, 10:51 PM ESTAreal Flood AdvisoryPBZ11 hr
Dec 12, 4:15 PM ESTSpecial Weather StatementPBZ30 min
Dec 12, 5:01 PM ESTSpecial Weather StatementPBZ59 min
Dec 13, 2:59 AM ESTWinter Weather AdvisoryPBZ31 hr
Dec 30, 4:16 PM ESTSpecial Weather StatementPBZ89 min

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 archive20162018

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.