Alert archive / Ohio / Cuyahoga County

Weather alerts in Cuyahoga County, Ohio, 2011

186 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Cuyahoga County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts
186
Warnings
65
Watches
35
Advisories
41
Busiest month
May39 alerts
Busiest day
July 19, 20118 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 2 tornado warnings covering Cuyahoga County in 2011 had a tornado report inside them.

Cuyahoga County, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings271737%3589%33 min
Flash flood warnings8450%863%56 min

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Cleveland, OH: tornado warnings26196%333%2 min
NWS Cleveland, OH: severe thunderstorm warnings30018937%44885%24 min
NWS Cleveland, OH: flash flood warnings411368%2789%82 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 6, 9:45 PM ESTLake Effect Snow WarningCLE13 hr
Jan 7, 3:30 AM ESTLake Effect Snow WatchCLE24 hr
Jan 7, 3:18 PM ESTLake Effect Snow WarningCLE44 hr
Jan 10, 2:48 PM ESTWinter Weather AdvisoryCLE61 hr
Jan 12, 3:25 AM ESTWinter Storm WarningCLE19 hr
Jan 17, 3:14 PM ESTFreezing Rain AdvisoryCLE20 hr
Jan 19, 3:56 AM ESTFreezing Rain AdvisoryCLE8 hr
Jan 30, 3:14 PM ESTWinter Storm WatchCLE25 hr
Jan 31, 2:54 PM ESTWinter Storm WarningCLE42 hr
Feb 1, 12:12 AM ESTMesoscale DiscussionSPC5 hr
Feb 1, 4:54 PM ESTMesoscale DiscussionSPC5 hr
Feb 2, 8:54 AM ESTWinter Weather AdvisoryCLE6 hr
Feb 5, 3:54 AM ESTWinter Weather AdvisoryCLE18 hr
Feb 13, 11:05 PM ESTWind AdvisoryCLE16 hr
Feb 20, 3:52 AM ESTWinter Weather AdvisoryCLE47 hr
Feb 23, 3:38 PM ESTWinter Storm WatchCLE23 hr
Feb 23, 11:19 PM ESTWinter Weather AdvisoryCLE11 hr
Feb 24, 3:54 AM ESTWinter Storm WarningCLE36 hr
Feb 24, 10:41 PM ESTMesoscale DiscussionSPC6 hr
Feb 25, 2:46 AM ESTMesoscale DiscussionSPC4 hr
Feb 27, 3:42 AM ESTFlood WatchCLE35 hr
Feb 28, 12:51 AM ESTAreal Flood WarningCLE12 hr
Feb 28, 5:20 AM ESTRiver Flood WarningCLE35 hr
Feb 28, 5:55 AM ESTRiver Flood WarningCLE41 hr
Feb 28, 10:12 AM ESTFlash Flood WarningCLE58 min
Feb 28, 11:16 AM ESTAreal Flood WarningCLE33 hr
Mar 3, 11:43 AM ESTFlood WatchCLE50 hr
Mar 5, 8:42 AM ESTAreal Flood AdvisoryCLE10 hr
Mar 5, 10:45 AM ESTRiver Flood WarningCLE27 hr
Mar 5, 1:48 PM ESTFlood WatchCLE7 hr
Mar 9, 3:19 PM ESTWinter Storm WatchCLE24 hr
Mar 9, 8:40 PM ESTRiver Flood WarningCLE42 hr
Mar 10, 9:52 AM ESTAreal Flood AdvisoryCLE7 hr
Mar 10, 2:51 PM ESTWinter Storm WarningCLE31 hr
Mar 23, 2:50 PM EDTFreezing Rain AdvisoryCLE13 hr
Apr 3, 3:45 PM EDTWind AdvisoryCLE24 hr
Apr 4, 7:53 AM EDTMesoscale DiscussionSPC2 hr
Apr 4, 8:32 AM EDTSevere Thunderstorm WarningCLE23 min
Apr 4, 5:01 PM EDTAreal Flood AdvisoryCLE4 hr
Apr 15, 3:34 PM EDTWind AdvisoryCLE22 hr
Apr 16, 1:27 PM EDTSevere Thunderstorm WarningCLE63 min
Apr 16, 1:34 PM EDTMesoscale DiscussionSPC116 min
Apr 16, 3:49 PM EDTWind AdvisoryCLE28 hr
Apr 17, 3:34 AM EDTHigh Wind WarningCLE16 hr
Apr 20, 11:31 AM EDTWind AdvisoryCLE4 hr
Apr 25, 12:48 PM EDTFlood WatchCLE63 hr
Apr 25, 1:52 PM EDTMesoscale DiscussionSPC83 min
Apr 25, 3:41 PM EDTAreal Flood WarningCLE6 hr
Apr 26, 4:53 AM EDTDense Fog AdvisoryCLE4 hr
Apr 26, 3:19 PM EDTWind AdvisoryCLE7 hr
Apr 27, 12:51 PM EDTSevere Thunderstorm WarningCLE39 min
Apr 27, 1:19 PM EDTSevere Thunderstorm WarningCLE41 min
Apr 27, 9:32 PM EDTWind AdvisoryCLE6 hr
Apr 28, 3:19 AM EDTMesoscale DiscussionSPC56 min
Apr 28, 3:55 AM EDTHigh Wind WarningCLE6 hr
May 4, 3:45 AM EDTFrost AdvisoryCLE29 hr
May 12, 11:04 AM EDTSevere Thunderstorm WatchSPC8 hr
May 12, 4:08 PM EDTSevere Thunderstorm WarningCLE67 min
May 12, 4:11 PM EDTAreal Flood AdvisoryCLE10 hr
May 12, 6:52 PM EDTMesoscale DiscussionSPC
May 13, 9:27 AM EDTFlood WatchCLE14 hr
May 13, 12:52 PM EDTFlash Flood WarningCLE5 hr
May 14, 4:19 AM EDTFlash Flood WatchCLE19 hr
May 14, 1:59 PM EDTFlash Flood WarningCLE4 hr
May 14, 4:07 PM EDTFlash Flood WarningCLE4 hr
May 14, 6:00 PM EDTAreal Flood WarningCLE5 hr
May 18, 2:49 AM EDTDense Fog AdvisoryCLE5 hr
May 18, 3:08 PM EDTMesoscale DiscussionSPC67 min
May 23, 8:25 AM EDTMesoscale DiscussionSPC65 min
May 23, 4:28 PM EDTSevere Thunderstorm WatchSPC6 hr
May 23, 6:20 PM EDTMesoscale DiscussionSPC55 min
May 23, 6:49 PM EDTSevere Thunderstorm WarningCLE56 min
May 23, 6:58 PM EDTTornado WarningCLE32 min
May 23, 7:27 PM EDTTornado WarningCLE33 min
May 23, 7:37 PM EDTAreal Flood AdvisoryCLE113 min
May 23, 8:07 PM EDTMesoscale DiscussionSPC83 min
May 23, 9:46 PM EDTSevere Thunderstorm WarningCLE38 min
May 25, 1:55 PM EDTTornado WatchSPC8 hr
May 25, 4:45 PM EDTMesoscale DiscussionSPC60 min
May 25, 6:42 PM EDTAreal Flood WarningCLE5 hr
May 25, 6:45 PM EDTSevere Thunderstorm WarningCLE45 min
May 25, 7:09 PM EDTFlash Flood WarningCLE4 hr
May 25, 8:14 PM EDTMesoscale DiscussionSPC2 hr
May 25, 10:49 PM EDTRiver Flood WarningCLE36 hr
May 26, 12:15 AM EDTAreal Flood WarningCLE6 hr
May 26, 2:37 AM EDTMesoscale DiscussionSPC83 min
May 26, 11:02 AM EDTFlood WatchCLE11 hr
May 26, 5:48 PM EDTAreal Flood WarningCLE7 hr
May 26, 6:06 PM EDTSevere Thunderstorm WatchSPC6 hr
May 29, 6:05 PM EDTMesoscale DiscussionSPC25 min
May 29, 6:17 PM EDTSevere Thunderstorm WatchSPC5 hr
May 29, 7:10 PM EDTSevere Thunderstorm WarningCLE65 min
May 29, 7:28 PM EDTMesoscale DiscussionSPC62 min
May 31, 4:07 PM EDTMesoscale DiscussionSPC113 min
Jun 7, 5:29 AM EDTMesoscale DiscussionSPC3 hr
Jun 7, 6:47 AM EDTSevere Thunderstorm WatchSPC5 hr
Jun 7, 8:21 AM EDTSevere Thunderstorm WarningCLE39 min
Jun 7, 8:22 AM EDTMesoscale DiscussionSPC113 min
Jun 7, 9:00 AM EDTAreal Flood AdvisoryCLE4 hr
Jun 9, 3:29 AM EDTMesoscale DiscussionSPC2 hr
Jun 9, 3:56 AM EDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 8:13 AM EDTMesoscale DiscussionSPC2 hr
Jun 20, 3:51 AM EDTDense Fog AdvisoryCLE5 hr
Jun 21, 8:54 PM EDTSevere Thunderstorm WarningCLE66 min
Jun 21, 9:38 PM EDTSevere Thunderstorm WarningCLE67 min
Jul 2, 9:01 PM EDTMesoscale DiscussionSPC59 min
Jul 2, 10:27 PM EDTSevere Thunderstorm WarningCLE63 min
Jul 11, 10:16 AM EDTSevere Thunderstorm WatchSPC9 hr
Jul 11, 12:34 PM EDTMesoscale DiscussionSPC56 min
Jul 11, 1:42 PM EDTMesoscale DiscussionSPC93 min
Jul 18, 1:18 PM EDTMesoscale DiscussionSPC117 min
Jul 18, 3:43 PM EDTSevere Thunderstorm WarningCLE62 min
Jul 18, 3:57 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 18, 8:02 PM EDTMesoscale DiscussionSPC58 min
Jul 19, 2:36 AM EDTAreal Flood AdvisoryCLE5 hr
Jul 19, 3:21 AM EDTAreal Flood AdvisoryCLE4 hr
Jul 19, 3:26 AM EDTFlash Flood WarningCLE6 hr
Jul 19, 4:19 AM EDTFlash Flood WarningCLE5 hr
Jul 19, 4:33 AM EDTHeat AdvisoryCLE39 hr
Jul 19, 6:46 AM EDTRiver Flood WarningCLE22 hr
Jul 19, 8:59 AM EDTAreal Flood WarningCLE6 hr
Jul 20, 3:49 AM EDTExcessive Heat WatchCLE10 hr
Jul 20, 2:15 PM EDTExcessive Heat WarningCLE31 hr
Jul 21, 3:24 PM EDTHeat AdvisoryCLE27 hr
Jul 22, 3:12 PM EDTSevere Thunderstorm WarningCLE63 min
Jul 22, 3:38 PM EDTSevere Thunderstorm WarningCLE52 min
Jul 22, 3:42 PM EDTFlash Flood WarningCLE5 hr
Jul 22, 4:23 PM EDTSevere Thunderstorm WarningCLE67 min
Jul 23, 3:40 AM EDTFlash Flood WatchCLE26 hr
Jul 23, 6:52 PM EDTAreal Flood AdvisoryCLE3 hr
Jul 23, 7:06 PM EDTMesoscale DiscussionSPC114 min
Jul 23, 7:16 PM EDTSevere Thunderstorm WarningCLE44 min
Jul 23, 10:02 PM EDTAreal Flood AdvisoryCLE3 hr
Jul 28, 3:43 PM EDTMesoscale DiscussionSPC62 min
Jul 28, 4:03 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 29, 3:56 AM EDTSevere Thunderstorm WatchSPC5 hr
Aug 1, 8:01 AM EDTMesoscale DiscussionSPC89 min
Aug 1, 11:12 AM EDTSevere Thunderstorm WarningCLE63 min
Aug 1, 12:13 PM EDTSevere Thunderstorm WarningCLE62 min
Aug 1, 12:16 PM EDTAreal Flood AdvisoryCLE3 hr
Aug 1, 1:06 PM EDTMesoscale DiscussionSPC24 min
Aug 1, 1:19 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 1, 3:39 PM EDTMesoscale DiscussionSPC66 min
Aug 9, 6:35 PM EDTMesoscale DiscussionSPC85 min
Aug 9, 6:56 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 9, 7:06 PM EDTSevere Thunderstorm WarningCLE69 min
Aug 9, 8:13 PM EDTSevere Thunderstorm WarningCLE47 min
Aug 9, 8:31 PM EDTMesoscale DiscussionSPC89 min
Aug 13, 3:37 PM EDTFlood WatchCLE47 hr
Aug 14, 12:56 PM EDTAreal Flood WarningCLE6 hr
Aug 14, 2:46 PM EDTRiver Flood WarningCLE10 hr
Aug 14, 7:55 PM EDTAreal Flood WarningCLE6 hr
Aug 15, 4:14 AM EDTCoastal Flood StatementCLE16 hr
Aug 15, 8:19 AM EDTAreal Flood AdvisoryCLE5 hr
Aug 18, 8:53 PM EDTSevere Thunderstorm WarningCLE67 min
Aug 24, 9:18 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 24, 10:27 PM EDTTornado WatchSPC5 hr
Aug 24, 11:48 PM EDTMesoscale DiscussionSPC87 min
Aug 24, 11:49 PM EDTSevere Thunderstorm WarningCLE71 min
Aug 28, 4:07 AM EDTCoastal Flood StatementCLE16 hr
Sep 1, 3:19 AM EDTSevere Thunderstorm WarningCLE26 min
Sep 2, 4:00 AM EDTHeat AdvisoryCLE16 hr
Sep 4, 2:21 AM EDTSevere Thunderstorm WarningCLE29 min
Sep 5, 4:29 AM EDTCoastal Flood StatementCLE18 hr
Sep 6, 4:58 AM EDTCoastal Flood StatementCLE17 hr
Sep 7, 4:09 AM EDTCoastal Flood StatementCLE18 hr
Sep 8, 4:20 AM EDTCoastal Flood StatementCLE18 hr
Sep 10, 8:57 AM EDTAreal Flood AdvisoryCLE3 hr
Sep 10, 9:22 AM EDTFlood WatchCLE6 hr
Sep 15, 4:40 AM EDTCoastal Flood StatementCLE15 hr
Sep 26, 3:46 PM EDTAreal Flood AdvisoryCLE3 hr
Sep 30, 4:28 AM EDTFlood WatchCLE34 hr
Sep 30, 5:08 AM EDTCoastal Flood StatementCLE15 hr
Oct 14, 3:19 PM EDTWind AdvisoryCLE27 hr
Oct 18, 3:18 PM EDTFlood WatchCLE37 hr
Oct 20, 12:40 AM EDTRiver Flood WarningCLE10 hr
Oct 27, 3:40 PM EDTFrost AdvisoryCLE18 hr
Nov 13, 3:42 AM ESTWind AdvisoryCLE14 hr
Nov 14, 3:29 PM ESTTornado WatchSPC6 hr
Nov 14, 4:38 PM ESTMesoscale DiscussionSPC2 hr
Nov 14, 5:14 PM ESTSevere Thunderstorm WarningCLE61 min
Nov 28, 4:36 AM ESTFlood WatchCLE41 hr
Dec 5, 3:07 AM ESTFlood WatchCLE24 hr
Dec 5, 9:14 PM ESTRiver Flood WarningCLE21 hr
Dec 5, 9:48 PM ESTAreal Flood AdvisoryCLE9 hr
Dec 27, 3:37 AM ESTWinter Weather AdvisoryCLE27 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 archive20102012

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.