Alert archive / Pennsylvania / McKean County

Weather alerts in McKean County, Pennsylvania, 2011

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

McKean County and its neighbors

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

Alerts
170
Warnings
36
Watches
26
Advisories
48
Busiest month
April33 alerts
Busiest day
May 24, 201111 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 McKean County in 2011 had a tornado report inside them.

McKean County, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings271256%6100%35 min
Flash flood warnings110%250%77 min

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings40783%2335%22 min
NWS State College, PA: severe thunderstorm warnings24312748%33283%28 min
NWS State College, PA: flash flood warnings794642%11476%101 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 8, 3:58 AM ESTLake Effect Snow AdvisoryCTP23 hr
Jan 10, 3:14 PM ESTWinter Weather AdvisoryCTP3 days
Jan 20, 4:13 AM ESTWinter Weather AdvisoryCTP40 hr
Jan 21, 4:10 AM ESTLake Effect Snow AdvisoryCTP16 hr
Jan 23, 2:40 PM ESTWind Chill AdvisoryCTP20 hr
Jan 29, 10:45 AM ESTWinter Weather AdvisoryCTP5 hr
Jan 30, 12:16 AM ESTSpecial Weather StatementCTP119 min
Jan 30, 7:18 PM ESTWinter Storm WatchCTP20 hr
Jan 31, 3:07 PM ESTWinter Storm WarningCTP40 hr
Feb 1, 2:42 AM ESTMesoscale DiscussionSPC4 hr
Feb 1, 8:39 PM ESTMesoscale DiscussionSPC6 hr
Feb 4, 2:47 PM ESTWinter Weather AdvisoryCTP32 hr
Feb 7, 2:52 PM ESTWinter Weather AdvisoryCTP19 hr
Feb 8, 2:11 PM ESTWind Chill AdvisoryCTP19 hr
Feb 12, 10:34 AM ESTSpecial Weather StatementCTP86 min
Feb 13, 3:14 PM ESTWind AdvisoryCTP30 hr
Feb 18, 11:00 AM ESTHigh Wind WatchCTP10 hr
Feb 18, 9:18 PM ESTHigh Wind WarningCTP24 hr
Feb 20, 4:29 AM ESTWinter Weather AdvisoryCTP30 hr
Feb 20, 2:03 PM ESTWinter Storm WarningCTP20 hr
Feb 20, 7:46 PM ESTMesoscale DiscussionSPC4 hr
Feb 20, 11:50 PM ESTMesoscale DiscussionSPC5 hr
Feb 23, 3:21 PM ESTWinter Storm WatchCTP31 hr
Feb 24, 9:58 PM ESTWinter Storm WarningCTP18 hr
Feb 25, 2:46 AM ESTMesoscale DiscussionSPC4 hr
Feb 27, 1:59 PM ESTFlood WatchCTP22 hr
Feb 28, 4:51 AM ESTAreal Flood WarningCTP6 hr
Mar 4, 3:33 AM ESTFlood WatchCTP3 days
Mar 4, 7:32 AM ESTFreezing Rain AdvisoryCTP3 hr
Mar 5, 11:19 AM ESTWinter Storm WatchCTP18 hr
Mar 5, 10:50 PM ESTWinter Weather AdvisoryCTP32 hr
Mar 8, 4:25 AM ESTFlood WatchCTP66 hr
Mar 8, 2:18 PM ESTWinter Weather AdvisoryCTP38 hr
Mar 10, 5:11 PM ESTAreal Flood WarningCTP12 hr
Mar 11, 1:01 AM ESTWinter Weather AdvisoryCTP21 hr
Mar 22, 3:51 AM EDTWinter Storm WatchCTP12 hr
Mar 22, 3:49 PM EDTWinter Weather AdvisoryCTP22 hr
Mar 23, 5:29 PM EDTWinter Weather AdvisoryCTP4 hr
Apr 4, 10:12 AM EDTSpecial Weather StatementCTP33 min
Apr 4, 10:00 PM EDTFlood WatchCTP10 hr
Apr 5, 7:21 AM EDTAreal Flood AdvisoryCTP4 hr
Apr 6, 5:14 PM EDTWinter Weather AdvisoryCTP13 hr
Apr 12, 10:16 PM EDTAreal Flood AdvisoryCTP3 hr
Apr 15, 1:56 PM EDTWind AdvisoryCTP32 hr
Apr 16, 9:40 PM EDTWind AdvisoryCTP22 hr
Apr 20, 3:28 AM EDTSpecial Weather StatementCTP47 min
Apr 20, 4:18 AM EDTSpecial Weather StatementCTP42 min
Apr 20, 5:05 AM EDTSpecial Weather StatementCTP40 min
Apr 25, 1:52 PM EDTMesoscale DiscussionSPC83 min
Apr 25, 2:47 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 25, 5:32 PM EDTSevere Thunderstorm WarningCTP58 min
Apr 25, 6:28 PM EDTSevere Thunderstorm WarningCTP32 min
Apr 25, 7:00 PM EDTSevere Thunderstorm WarningCTP30 min
Apr 25, 7:23 PM EDTSpecial Weather StatementCTP67 min
Apr 25, 7:34 PM EDTSevere Thunderstorm WarningCTP26 min
Apr 26, 11:51 AM EDTSpecial Weather StatementCTP39 min
Apr 26, 1:18 PM EDTMesoscale DiscussionSPC57 min
Apr 26, 1:49 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 26, 6:44 PM EDTAreal Flood AdvisoryCTP3 hr
Apr 26, 6:51 PM EDTMesoscale DiscussionSPC54 min
Apr 27, 11:16 AM EDTFlash Flood WatchCTP23 hr
Apr 27, 1:24 PM EDTMesoscale DiscussionSPC96 min
Apr 27, 3:10 PM EDTTornado WatchSPC7 hr
Apr 27, 4:49 PM EDTSpecial Weather StatementCTP41 min
Apr 27, 4:55 PM EDTSevere Thunderstorm WarningCTP50 min
Apr 27, 5:19 PM EDTSevere Thunderstorm WarningCTP26 min
Apr 27, 5:43 PM EDTSevere Thunderstorm WarningCTP62 min
Apr 27, 6:45 PM EDTSevere Thunderstorm WarningCTP60 min
Apr 27, 7:07 PM EDTAreal Flood AdvisoryCTP3 hr
Apr 27, 11:50 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 28, 6:32 AM EDTWind AdvisoryCTP5 hr
May 3, 10:41 AM EDTAreal Flood AdvisoryCTP3 hr
May 13, 5:38 PM EDTSpecial Weather StatementCTP112 min
May 14, 4:00 AM EDTFlash Flood WatchCTP24 hr
May 15, 9:50 AM EDTFlash Flood WatchCTP12 hr
May 18, 7:47 PM EDTAreal Flood AdvisoryCTP3 hr
May 19, 5:03 PM EDTSpecial Weather StatementCTP57 min
May 19, 6:13 PM EDTFlash Flood WarningCTP3 hr
May 23, 10:33 AM EDTMesoscale DiscussionSPC87 min
May 23, 8:07 PM EDTMesoscale DiscussionSPC83 min
May 23, 8:52 PM EDTSevere Thunderstorm WarningCTP53 min
May 23, 9:46 PM EDTSpecial Weather StatementCTP29 min
May 23, 10:17 PM EDTSpecial Weather StatementCTP43 min
May 23, 11:17 PM EDTAreal Flood AdvisoryCTP3 hr
May 23, 11:18 PM EDTSevere Thunderstorm WarningCTP42 min
May 23, 11:39 PM EDTTornado WarningCTP36 min
May 24, 12:09 AM EDTSevere Thunderstorm WarningCTP51 min
May 24, 12:29 AM EDTAreal Flood AdvisoryCTP3 hr
May 24, 12:43 AM EDTSevere Thunderstorm WarningCTP17 min
May 24, 1:05 AM EDTSpecial Weather StatementCTP55 min
May 25, 10:14 PM EDTSevere Thunderstorm WarningCTP61 min
May 25, 11:10 PM EDTSevere Thunderstorm WarningCTP65 min
May 25, 11:24 PM EDTSevere Thunderstorm WarningCTP66 min
May 26, 5:49 PM EDTMesoscale DiscussionSPC56 min
May 26, 6:06 PM EDTSevere Thunderstorm WatchSPC6 hr
May 26, 6:28 PM EDTSevere Thunderstorm WarningCTP62 min
May 29, 6:17 PM EDTSevere Thunderstorm WatchSPC5 hr
May 29, 7:28 PM EDTMesoscale DiscussionSPC62 min
May 29, 9:21 PM EDTSevere Thunderstorm WarningCTP67 min
May 29, 9:47 PM EDTMesoscale DiscussionSPC58 min
May 30, 12:32 AM EDTSpecial Weather StatementCTP43 min
Jun 1, 8:55 AM EDTSpecial Weather StatementCTP80 min
Jun 1, 9:17 AM EDTSevere Thunderstorm WarningCTP73 min
Jun 1, 9:38 AM EDTMesoscale DiscussionSPC37 min
Jun 1, 10:23 AM EDTSevere Thunderstorm WarningCTP52 min
Jun 2, 3:20 AM EDTFrost AdvisoryCTP27 hr
Jun 4, 12:14 PM EDTSpecial Weather StatementCTP46 min
Jun 4, 12:47 PM EDTSevere Thunderstorm WarningCTP58 min
Jun 8, 1:51 AM EDTSevere Thunderstorm WatchSPC3 hr
Jun 8, 3:31 AM EDTSpecial Weather StatementCTP44 min
Jun 8, 4:08 AM EDTSpecial Weather StatementCTP52 min
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 9, 10:36 AM EDTMesoscale DiscussionSPC84 min
Jun 9, 12:53 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 16, 5:11 PM EDTSpecial Weather StatementCTP34 min
Jun 16, 6:01 PM EDTMesoscale DiscussionSPC89 min
Jun 23, 3:27 PM EDTMesoscale DiscussionSPC2 hr
Jun 28, 1:19 PM EDTMesoscale DiscussionSPC86 min
Jul 8, 7:14 AM EDTSpecial Weather StatementCTP61 min
Jul 8, 7:52 AM EDTSpecial Weather StatementCTP53 min
Jul 20, 1:43 PM EDTHeat AdvisoryCTP30 hr
Jul 25, 11:12 AM EDTMesoscale DiscussionSPC63 min
Jul 25, 11:37 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 25, 12:45 PM EDTSpecial Weather StatementCTP45 min
Jul 25, 12:55 PM EDTSevere Thunderstorm WarningCTP65 min
Jul 25, 3:16 PM EDTMesoscale DiscussionSPC59 min
Jul 29, 3:31 AM EDTMesoscale DiscussionSPC89 min
Aug 1, 8:01 AM EDTMesoscale DiscussionSPC89 min
Aug 1, 12:07 PM EDTMesoscale DiscussionSPC53 min
Aug 1, 2:57 PM EDTSpecial Weather StatementCTP33 min
Aug 14, 11:10 AM EDTAreal Flood AdvisoryCTP3 hr
Aug 20, 4:15 AM EDTDense Fog AdvisoryCTP7 hr
Aug 24, 11:48 PM EDTMesoscale DiscussionSPC87 min
Aug 25, 12:42 AM EDTSevere Thunderstorm WatchSPC5 hr
Aug 25, 12:54 AM EDTSevere Thunderstorm WarningCTP66 min
Aug 25, 1:59 AM EDTSpecial Weather StatementCTP31 min
Aug 25, 2:30 AM EDTSpecial Weather StatementCTP45 min
Aug 25, 2:31 AM EDTMesoscale DiscussionSPC119 min
Sep 1, 6:12 AM EDTSpecial Weather StatementCTP33 min
Sep 3, 6:12 PM EDTSevere Thunderstorm WarningCTP33 min
Sep 5, 9:07 PM EDTFlood WatchCTP71 hr
Sep 7, 2:53 AM EDTAreal Flood AdvisoryCTP6 hr
Sep 9, 4:27 PM EDTAreal Flood AdvisoryCTP3 hr
Sep 10, 4:01 AM EDTAreal Flood AdvisoryCTP3 hr
Sep 10, 6:51 AM EDTAreal Flood AdvisoryCTP3 hr
Sep 12, 12:29 AM EDTDense Fog AdvisoryCTP10 hr
Sep 13, 7:00 PM EDTMesoscale DiscussionSPC60 min
Sep 13, 7:37 PM EDTSpecial Weather StatementCTP23 min
Sep 13, 7:52 PM EDTSevere Thunderstorm WarningCTP23 min
Sep 13, 8:14 PM EDTSevere Thunderstorm WarningCTP46 min
Sep 15, 11:36 AM EDTFrost AdvisoryCTP20 hr
Sep 23, 1:15 AM EDTDense Fog AdvisoryCTP9 hr
Sep 27, 9:12 AM EDTFlash Flood WatchCTP40 hr
Sep 28, 1:11 AM EDTAreal Flood AdvisoryCTP3 hr
Sep 28, 2:00 AM EDTSpecial Weather StatementCTP60 min
Sep 28, 2:47 PM EDTAreal Flood AdvisoryCTP3 hr
Oct 4, 3:32 PM EDTFreeze WatchCTP12 hr
Oct 5, 3:35 AM EDTFrost AdvisoryCTP29 hr
Oct 6, 1:09 PM EDTFrost AdvisoryCTP19 hr
Oct 6, 9:47 PM EDTFreeze WarningCTP10 hr
Oct 14, 1:32 PM EDTWind AdvisoryCTP30 hr
Oct 19, 1:40 AM EDTSpecial Weather StatementCTP50 min
Oct 22, 5:22 AM EDTFrost AdvisoryCTP28 hr
Oct 28, 1:19 PM EDTWinter Weather AdvisoryCTP30 hr
Nov 14, 6:03 PM ESTMesoscale DiscussionSPC117 min
Nov 14, 6:49 PM ESTSevere Thunderstorm WarningCTP56 min
Nov 14, 7:35 PM ESTSevere Thunderstorm WarningCTP55 min
Dec 27, 4:15 AM ESTWinter Weather AdvisoryCTP29 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.