Alert archive / Pennsylvania / Potter County

Weather alerts in Potter County, Pennsylvania, 2013

162 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Potter County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
162
Warnings
41
Watches
26
Advisories
37
Busiest month
September33 alerts
Busiest day
September 11, 201311 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 reports fell inside a warning.

Potter County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings010%
Severe thunderstorm warnings271737%771%20 min
Flash flood warnings3167%3100%87 min

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings7271%633%5 min
NWS State College, PA: severe thunderstorm warnings21214930%37187%29 min
NWS State College, PA: flash flood warnings332330%7292%72 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 11, 9:49 PM ESTDense Fog AdvisoryCTP13 hr
Jan 12, 7:22 PM ESTDense Fog AdvisoryCTP17 hr
Jan 20, 12:35 AM ESTWind AdvisoryCTP12 hr
Jan 21, 4:12 AM ESTWind Chill AdvisoryCTP57 hr
Jan 22, 8:43 PM ESTWind Chill AdvisoryCTP16 hr
Jan 27, 4:12 AM ESTWinter Weather AdvisoryCTP39 hr
Jan 28, 7:33 AM ESTMesoscale DiscussionSPC5 hr
Jan 29, 2:58 PM ESTFlood WatchCTP37 hr
Jan 29, 10:15 PM ESTDense Fog AdvisoryCTP11 hr
Jan 30, 9:32 AM ESTWind AdvisoryCTP32 hr
Jan 30, 10:19 AM ESTMesoscale DiscussionSPC86 min
Jan 31, 1:31 PM ESTSpecial Weather StatementCTP59 min
Feb 1, 6:30 PM ESTWinter Weather AdvisoryCTP30 hr
Feb 6, 2:03 PM ESTWinter Storm WatchCTP24 hr
Feb 7, 2:11 PM ESTWinter Storm WarningCTP23 hr
Feb 7, 2:11 PM ESTWinter Weather AdvisoryCTP37 hr
Feb 10, 1:10 PM ESTFreezing Rain AdvisoryCTP20 hr
Feb 11, 4:06 AM ESTWind AdvisoryCTP29 hr
Feb 18, 2:45 PM ESTWinter Weather AdvisoryCTP21 hr
Feb 21, 2:53 PM ESTWinter Weather AdvisoryCTP45 hr
Feb 25, 8:02 PM ESTWinter Storm WatchCTP15 hr
Feb 25, 8:02 PM ESTWinter Weather AdvisoryCTP41 hr
Mar 17, 3:06 AM EDTWinter Storm WatchCTP12 hr
Mar 17, 3:06 AM EDTWinter Storm WarningCTP45 hr
Mar 17, 2:47 PM EDTWinter Weather AdvisoryCTP41 hr
Apr 5, 11:14 AM EDTRed Flag WarningCTP9 hr
Apr 10, 1:33 PM EDTMesoscale DiscussionSPC117 min
Apr 10, 2:36 PM EDTSevere Thunderstorm WarningCTP39 min
Apr 10, 3:07 PM EDTSevere Thunderstorm WarningCTP53 min
Apr 10, 6:02 PM EDTSevere Thunderstorm WarningCTP58 min
Apr 11, 1:37 PM EDTFlood WatchCTP15 hr
Apr 19, 3:28 PM EDTSpecial Weather StatementCTP32 min
Apr 19, 3:59 PM EDTSpecial Weather StatementCTP46 min
Apr 24, 3:36 PM EDTMesoscale DiscussionSPC84 min
May 8, 10:57 AM EDTAreal Flood AdvisoryCTP3 hr
May 9, 4:09 AM EDTFlash Flood WatchCTP10 hr
May 10, 5:11 PM EDTMesoscale DiscussionSPC94 min
May 10, 7:06 PM EDTSpecial Weather StatementCTP54 min
May 22, 2:27 PM EDTSevere Thunderstorm WatchSPC7 hr
May 22, 6:20 PM EDTSevere Thunderstorm WarningCTP55 min
May 22, 6:33 PM EDTSevere Thunderstorm WarningCTP57 min
May 22, 7:25 PM EDTSevere Thunderstorm WarningCTP65 min
May 23, 10:57 AM EDTMesoscale DiscussionSPC3 hr
May 24, 4:41 AM EDTFreeze WarningCTP27 hr
May 25, 3:34 AM EDTFreeze WatchCTP10 hr
May 25, 6:44 AM EDTRed Flag WarningCTP12 hr
May 25, 2:00 PM EDTFreeze WarningCTP18 hr
May 26, 2:15 AM EDTFreeze WatchCTP11 hr
May 26, 4:07 AM EDTFreeze WarningCTP28 hr
May 28, 8:42 PM EDTMesoscale DiscussionSPC93 min
May 28, 10:15 PM EDTSevere Thunderstorm WarningCTP75 min
May 29, 12:08 AM EDTAreal Flood AdvisoryCTP3 hr
May 29, 11:38 AM EDTMesoscale DiscussionSPC2 hr
May 29, 3:19 PM EDTSevere Thunderstorm WatchSPC8 hr
May 29, 5:25 PM EDTSpecial Weather StatementCTP35 min
Jun 12, 12:41 PM EDTFlood WatchCTP27 hr
Jun 13, 3:52 AM EDTSevere Thunderstorm WarningCTP53 min
Jun 13, 3:58 AM EDTSevere Thunderstorm WatchSPC7 hr
Jun 13, 5:27 AM EDTMesoscale DiscussionSPC2 hr
Jun 25, 12:22 PM EDTMesoscale DiscussionSPC2 hr
Jun 25, 5:27 PM EDTMesoscale DiscussionSPC93 min
Jun 25, 6:20 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 26, 3:52 PM EDTMesoscale DiscussionSPC113 min
Jun 27, 9:45 AM EDTFlash Flood WatchCTP12 hr
Jun 28, 1:02 PM EDTMesoscale DiscussionSPC118 min
Jun 28, 1:29 PM EDTSevere Thunderstorm WarningCTP61 min
Jun 30, 2:01 PM EDTFlash Flood WatchCTP56 hr
Jun 30, 2:33 PM EDTMesoscale DiscussionSPC2 hr
Jul 1, 6:59 AM EDTAreal Flood AdvisoryCTP3 hr
Jul 1, 7:48 AM EDTFlash Flood WarningCTP3 hr
Jul 1, 10:54 AM EDTAreal Flood AdvisoryCTP3 hr
Jul 1, 1:48 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 2, 4:25 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 5, 1:59 PM EDTMesoscale DiscussionSPC61 min
Jul 5, 5:19 PM EDTSevere Thunderstorm WarningCTP41 min
Jul 10, 3:45 PM EDTMesoscale DiscussionSPC30 min
Jul 10, 3:56 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 10, 6:15 PM EDTMesoscale DiscussionSPC90 min
Jul 10, 6:59 PM EDTSpecial Weather StatementCTP61 min
Jul 18, 3:03 PM EDTSpecial Weather StatementCTP57 min
Jul 18, 3:28 PM EDTSpecial Weather StatementCTP32 min
Jul 18, 3:52 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 20, 6:19 AM EDTSpecial Weather StatementCTP41 min
Jul 23, 5:27 PM EDTMesoscale DiscussionSPC3 hr
Jul 27, 4:40 PM EDTSpecial Weather StatementCTP50 min
Jul 27, 5:01 PM EDTSevere Thunderstorm WarningCTP59 min
Jul 27, 5:25 PM EDTMesoscale DiscussionSPC95 min
Jul 27, 5:35 PM EDTSevere Thunderstorm WarningCTP55 min
Aug 8, 5:27 AM EDTSpecial Weather StatementCTP63 min
Aug 8, 6:21 AM EDTSpecial Weather StatementCTP54 min
Aug 8, 3:45 PM EDTMesoscale DiscussionSPC90 min
Aug 13, 3:32 AM EDTSpecial Weather StatementCTP58 min
Aug 20, 3:48 AM EDTDense Fog AdvisoryCTP5 hr
Aug 22, 2:03 PM EDTMesoscale DiscussionSPC2 hr
Aug 22, 3:35 PM EDTSpecial Weather StatementCTP25 min
Aug 22, 4:09 PM EDTSpecial Weather StatementCTP36 min
Aug 31, 3:05 PM EDTSpecial Weather StatementCTP55 min
Aug 31, 7:44 PM EDTAreal Flood AdvisoryCTP3 hr
Sep 2, 12:33 PM EDTMesoscale DiscussionSPC117 min
Sep 2, 2:19 PM EDTSevere Thunderstorm WarningCTP56 min
Sep 2, 3:14 PM EDTSevere Thunderstorm WarningCTP61 min
Sep 2, 3:18 PM EDTSevere Thunderstorm WatchSPC7 hr
Sep 2, 3:43 PM EDTSevere Thunderstorm WarningCTP62 min
Sep 2, 4:29 PM EDTSevere Thunderstorm WarningCTP61 min
Sep 2, 6:52 PM EDTMesoscale DiscussionSPC113 min
Sep 5, 3:47 AM EDTFrost AdvisoryCTP28 hr
Sep 11, 11:42 AM EDTMesoscale DiscussionSPC63 min
Sep 11, 12:33 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 11, 2:47 PM EDTMesoscale DiscussionSPC58 min
Sep 11, 3:37 PM EDTSpecial Weather StatementCTP53 min
Sep 11, 3:58 PM EDTSevere Thunderstorm WarningCTP62 min
Sep 11, 4:23 PM EDTAreal Flood AdvisoryCTP3 hr
Sep 11, 4:47 PM EDTFlash Flood WarningCTP3 hr
Sep 11, 5:47 PM EDTSpecial Weather StatementCTP43 min
Sep 11, 6:33 PM EDTSevere Thunderstorm WarningCTP57 min
Sep 11, 7:01 PM EDTFlash Flood WarningCTP3 hr
Sep 11, 7:50 PM EDTSevere Thunderstorm WarningCTP55 min
Sep 11, 8:21 PM EDTSpecial Weather StatementCTP24 min
Sep 11, 8:59 PM EDTSpecial Weather StatementCTP61 min
Sep 12, 12:02 PM EDTMesoscale DiscussionSPC58 min
Sep 12, 12:37 PM EDTSevere Thunderstorm WatchSPC7 hr
Sep 12, 12:57 PM EDTSpecial Weather StatementCTP33 min
Sep 12, 1:03 PM EDTSevere Thunderstorm WarningCTP57 min
Sep 12, 1:52 PM EDTSpecial Weather StatementCTP38 min
Sep 12, 2:27 PM EDTSpecial Weather StatementCTP48 min
Sep 12, 2:56 PM EDTSevere Thunderstorm WarningCTP64 min
Sep 16, 11:30 AM EDTFrost AdvisoryCTP21 hr
Sep 17, 2:11 PM EDTFrost AdvisoryCTP18 hr
Sep 20, 5:47 AM EDTDense Fog AdvisoryCTP3 hr
Sep 23, 4:50 AM EDTFrost AdvisoryCTP28 hr
Sep 23, 6:02 PM EDTFreeze WarningCTP15 hr
Oct 5, 6:12 PM EDTSpecial Weather StatementCTP78 min
Oct 7, 8:13 AM EDTSpecial Weather StatementCTP47 min
Oct 7, 8:25 AM EDTSevere Thunderstorm WarningCTP65 min
Oct 7, 8:56 AM EDTTornado WatchSPC8 hr
Oct 31, 9:48 PM EDTWind AdvisoryCTP16 hr
Nov 1, 3:37 AM EDTMesoscale DiscussionSPC83 min
Nov 1, 4:17 AM EDTSevere Thunderstorm WatchSPC4 hr
Nov 1, 4:22 AM EDTSevere Thunderstorm WarningCTP53 min
Nov 1, 5:13 AM EDTSevere Thunderstorm WarningCTP62 min
Nov 17, 12:07 PM ESTWind AdvisoryCTP19 hr
Nov 17, 7:36 PM ESTMesoscale DiscussionSPC54 min
Nov 17, 8:23 PM ESTSevere Thunderstorm WatchSPC4 hr
Nov 17, 10:24 PM ESTSevere Thunderstorm WarningCTP81 min
Nov 17, 10:24 PM ESTMesoscale DiscussionSPC66 min
Nov 17, 11:38 PM ESTSevere Thunderstorm WarningCTP52 min
Nov 23, 3:35 PM ESTSpecial Weather StatementCTP85 min
Nov 25, 3:33 AM ESTWinter Storm WatchCTP12 hr
Nov 25, 3:20 PM ESTWinter Storm WarningCTP61 hr
Dec 3, 7:13 AM ESTSpecial Weather StatementCTP92 min
Dec 4, 6:26 AM ESTDense Fog AdvisoryCTP4 hr
Dec 5, 12:11 PM ESTWinter Weather AdvisoryCTP37 hr
Dec 6, 10:26 AM ESTWinter Storm WarningCTP14 hr
Dec 6, 7:41 PM ESTMesoscale DiscussionSPC6 hr
Dec 7, 6:13 PM ESTWinter Weather AdvisoryCTP40 hr
Dec 12, 9:08 PM ESTWinter Storm WatchCTP14 hr
Dec 13, 11:32 AM ESTWinter Storm WarningCTP40 hr
Dec 14, 3:02 PM ESTMesoscale DiscussionSPC6 hr
Dec 20, 4:32 AM ESTFlood WatchCTP56 hr
Dec 22, 3:37 AM ESTSevere Thunderstorm WatchSPC5 hr
Dec 22, 3:57 AM ESTSevere Thunderstorm WarningCTP48 min
Dec 29, 2:38 PM ESTWinter Weather AdvisoryCTP7 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 archive20122014

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.