Alert archive / Pennsylvania / Erie County

Weather alerts in Erie County, Pennsylvania, 2021

136 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Erie County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts
136
Warnings
22
Watches
17
Advisories
39
Busiest month
July25 alerts
Busiest day
June 21, 20216 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 Erie County in 2021 had a tornado report inside them.

Erie County, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings10730%838%26 min
Flash flood warnings110%1100%15 min

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Cleveland, OH: tornado warnings17759%1267%16 min
NWS Cleveland, OH: severe thunderstorm warnings1208430%25480%21 min
NWS Cleveland, OH: flash flood warnings25964%2488%97 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 3, 3:42 AM ESTWinter Weather AdvisoryCLE6 hr
Jan 17, 1:00 PM ESTWinter Weather AdvisoryCLE21 hr
Jan 18, 8:47 AM ESTLake Effect Snow WarningCLE13 hr
Jan 19, 4:06 AM ESTWinter Weather AdvisoryCLE28 hr
Jan 19, 9:21 AM ESTSpecial Weather StatementCLE84 min
Jan 19, 2:28 PM ESTLake Effect Snow WarningCLE17 hr
Jan 22, 6:26 AM ESTSpecial Weather StatementCLE2 hr
Jan 25, 3:52 AM ESTWinter Weather AdvisoryCLE33 hr
Jan 28, 4:09 AM ESTWinter Weather AdvisoryCLE30 hr
Feb 13, 4:24 PM ESTWinter Storm WatchCLE12 hr
Feb 14, 4:07 AM ESTWinter Storm WarningCLE54 hr
Feb 15, 8:06 PM ESTMesoscale DiscussionSPC5 hr
Feb 16, 6:18 PM ESTWinter Weather AdvisoryCLE7 hr
Mar 1, 2:26 PM ESTSpecial Weather StatementCLE94 min
Mar 15, 10:16 PM EDTWinter Weather AdvisoryCLE8 hr
Mar 17, 3:24 PM EDTWind AdvisoryCLE32 hr
Mar 24, 3:30 AM EDTHigh Wind WatchCLE34 hr
Mar 25, 4:08 AM EDTHigh Wind WarningCLE32 hr
Mar 25, 4:08 AM EDTWind AdvisoryCLE35 hr
Apr 20, 3:54 AM EDTWinter Weather AdvisoryCLE30 hr
Apr 28, 1:06 PM EDTMesoscale DiscussionSPC114 min
Apr 29, 2:46 PM EDTFreeze WatchCLE24 hr
Apr 30, 2:55 PM EDTFreeze WarningCLE17 hr
May 8, 3:36 AM EDTFrost AdvisoryCLE27 hr
May 9, 2:06 PM EDTSpecial Weather StatementCLE84 min
May 9, 3:10 PM EDTFrost AdvisoryCLE15 hr
May 10, 12:29 PM EDTFrost AdvisoryCLE15 hr
May 12, 2:15 PM EDTFrost AdvisoryCLE17 hr
May 26, 12:16 PM EDTMesoscale DiscussionSPC119 min
May 27, 3:52 PM EDTBeach Hazards StatementCLE60 hr
May 28, 2:30 PM EDTWind AdvisoryCLE18 hr
Jun 4, 3:55 AM EDTDense Fog AdvisoryCLE5 hr
Jun 9, 4:26 PM EDTAreal Flood AdvisoryCLE8 min
Jun 9, 4:34 PM EDTFlash Flood WarningCLE3 hr
Jun 10, 3:37 AM EDTBeach Hazards StatementCLE19 hr
Jun 15, 3:51 AM EDTBeach Hazards StatementCLE27 hr
Jun 20, 3:52 PM EDTBeach Hazards StatementCLE38 hr
Jun 20, 10:45 PM EDTSpecial Weather StatementCLE45 min
Jun 20, 11:19 PM EDTSevere Thunderstorm WarningCLE26 min
Jun 21, 3:09 AM EDTSpecial Weather StatementCLE66 min
Jun 21, 7:40 AM EDTSpecial Weather StatementCLE35 min
Jun 21, 11:59 AM EDTMesoscale DiscussionSPC91 min
Jun 21, 12:31 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 29, 2:33 PM EDTMesoscale DiscussionSPC117 min
Jun 30, 12:46 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 1, 3:44 AM EDTBeach Hazards StatementCLE45 hr
Jul 6, 10:47 AM EDTSpecial Weather StatementCLE43 min
Jul 7, 1:31 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 7, 3:59 PM EDTMesoscale DiscussionSPC91 min
Jul 7, 6:15 PM EDTSpecial Weather StatementCLE60 min
Jul 8, 1:31 PM EDTMesoscale DiscussionSPC2 hr
Jul 11, 7:13 PM EDTAreal Flood AdvisoryCLE3 hr
Jul 12, 3:18 AM EDTFlash Flood WatchCLE18 hr
Jul 13, 3:31 PM EDTSevere Thunderstorm WarningCLE59 min
Jul 13, 3:51 PM EDTSevere Thunderstorm WarningCLE54 min
Jul 13, 4:07 PM EDTMesoscale DiscussionSPC113 min
Jul 13, 4:25 PM EDTSevere Thunderstorm WarningCLE36 min
Jul 15, 7:27 PM EDTSpecial Weather StatementCLE33 min
Jul 15, 7:37 PM EDTSevere Thunderstorm WarningCLE38 min
Jul 15, 8:03 PM EDTSpecial Weather StatementCLE27 min
Jul 16, 3:07 AM EDTFlash Flood WatchCLE36 hr
Jul 16, 3:49 PM EDTBeach Hazards StatementCLE35 hr
Jul 17, 6:09 AM EDTAreal Flood AdvisoryCLE6 hr
Jul 17, 12:16 PM EDTAreal Flood AdvisoryCLE6 hr
Jul 29, 10:05 AM EDTBeach Hazards StatementCLE28 hr
Jul 29, 10:17 AM EDTSpecial Weather StatementCLE28 min
Jul 29, 10:21 AM EDTSevere Thunderstorm WarningCLE39 min
Jul 29, 11:11 AM EDTAreal Flood AdvisoryCLE3 hr
Jul 29, 11:35 AM EDTSevere Thunderstorm WarningCLE40 min
Jul 29, 11:45 AM EDTTornado WarningCLE27 min
Aug 10, 8:58 AM EDTSpecial Weather StatementCLE47 min
Aug 11, 4:53 AM EDTSpecial Weather StatementCLE22 min
Aug 11, 5:29 AM EDTSpecial Weather StatementCLE46 min
Aug 11, 4:57 PM EDTSevere Thunderstorm WatchSPC3 hr
Aug 11, 6:09 PM EDTSevere Thunderstorm Warning Considerable damage threatCLE75 min
Aug 12, 3:48 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 18, 9:25 AM EDTBeach Hazards StatementCLE13 hr
Aug 20, 1:17 AM EDTDense Fog AdvisoryCLE8 hr
Aug 21, 5:26 PM EDTAreal Flood AdvisoryCLE3 hr
Aug 27, 4:44 PM EDTAreal Flood AdvisoryCLE3 hr
Aug 29, 1:07 PM EDTMesoscale DiscussionSPC83 min
Aug 29, 1:11 PM EDTAreal Flood AdvisoryCLE5 hr
Aug 29, 4:17 PM EDTSpecial Weather StatementCLE43 min
Aug 31, 3:44 PM EDTBeach Hazards StatementCLE45 hr
Sep 5, 7:10 AM EDTBeach Hazards StatementCLE5 hr
Sep 5, 3:55 PM EDTBeach Hazards StatementCLE24 hr
Sep 7, 3:45 PM EDTBeach Hazards StatementCLE36 hr
Sep 12, 10:25 PM EDTSevere Thunderstorm WatchSPC4 hr
Sep 12, 11:23 PM EDTSevere Thunderstorm WarningCLE37 min
Sep 13, 4:11 PM EDTMesoscale DiscussionSPC2 hr
Sep 13, 4:39 PM EDTSpecial Weather StatementCLE36 min
Sep 13, 5:05 PM EDTSevere Thunderstorm WarningCLE25 min
Sep 15, 12:35 AM EDTSpecial Weather StatementCLE70 min
Sep 15, 1:50 AM EDTSpecial Weather StatementCLE55 min
Sep 22, 2:23 PM EDTTornado WatchSPC6 hr
Sep 22, 4:08 PM EDTMesoscale DiscussionSPC97 min
Sep 22, 6:13 PM EDTMesoscale DiscussionSPC92 min
Sep 23, 3:39 PM EDTBeach Hazards StatementCLE30 hr
Sep 25, 11:31 AM EDTBeach Hazards StatementCLE56 hr
Sep 28, 12:04 PM EDTBeach Hazards StatementCLE3 hr
Oct 4, 4:44 PM EDTSpecial Weather StatementCLE91 min
Oct 5, 5:00 AM EDTDense Fog AdvisoryCLE5 hr
Oct 9, 1:56 AM EDTAreal Flood AdvisoryCLE8 hr
Oct 15, 1:59 PM EDTMesoscale DiscussionSPC91 min
Oct 21, 2:39 PM EDTMesoscale DiscussionSPC3 hr
Oct 29, 2:38 PM EDTAreal Flood AdvisoryCLE3 hr
Nov 2, 2:34 PM EDTWinter Weather AdvisoryCLE18 hr
Nov 10, 2:50 PM ESTWind AdvisoryCLE34 hr
Nov 13, 3:15 PM ESTWinter Weather AdvisoryCLE12 hr
Nov 18, 3:07 AM ESTWinter Storm WatchCLE10 hr
Nov 18, 3:07 AM ESTWinter Weather AdvisoryCLE30 hr
Nov 25, 3:41 AM ESTWinter Storm WatchCLE10 hr
Nov 25, 1:34 PM ESTLake Effect Snow WarningCLE38 hr
Nov 25, 1:34 PM ESTWinter Weather AdvisoryCLE38 hr
Nov 26, 12:48 PM ESTSpecial Weather StatementCLE87 min
Nov 26, 2:14 PM ESTSpecial Weather StatementCLE91 min
Nov 27, 2:33 PM ESTWinter Storm WatchCLE14 hr
Nov 27, 2:33 PM ESTWinter Weather AdvisoryCLE40 hr
Nov 28, 4:10 AM ESTLake Effect Snow WarningCLE24 hr
Nov 28, 1:37 PM ESTSpecial Weather StatementCLE113 min
Nov 28, 5:32 PM ESTSpecial Weather StatementCLE58 min
Nov 28, 6:02 PM ESTMesoscale DiscussionSPC5 hr
Nov 28, 6:33 PM ESTSpecial Weather StatementCLE87 min
Dec 4, 3:37 AM ESTHigh Wind WatchCLE23 hr
Dec 5, 2:59 AM ESTHigh Wind WarningCLE24 hr
Dec 5, 2:59 AM ESTWind AdvisoryCLE46 hr
Dec 6, 7:46 PM ESTSpecial Weather StatementCLE59 min
Dec 6, 8:44 PM ESTWinter Weather AdvisoryCLE10 hr
Dec 7, 12:35 AM ESTSpecial Weather StatementCLE85 min
Dec 7, 2:12 AM ESTSpecial Weather StatementCLE93 min
Dec 9, 3:15 AM ESTHigh Wind WatchCLE34 hr
Dec 10, 12:48 PM ESTHigh Wind WarningCLE33 hr
Dec 10, 12:48 PM ESTWind AdvisoryCLE30 hr
Dec 11, 5:51 PM ESTLakeshore Flood WarningCLE7 hr
Dec 15, 3:43 AM ESTWind AdvisoryCLE37 hr
Dec 29, 4:35 AM ESTDense Fog AdvisoryCLE5 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 archive20202022

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.