Alert archive / Pennsylvania / Potter County

Weather alerts in Potter County, Pennsylvania, 2019

154 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts
154
Warnings
30
Watches
18
Advisories
38
Busiest month
May23 alerts
Busiest day
August 15, 20199 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Potter County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings17853%683%15 min
Flash flood warnings110%0

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings21671%1735%7 min
NWS State College, PA: severe thunderstorm warnings28417738%46881%22 min
NWS State College, PA: flash flood warnings221245%3087%49 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
Dec 31, 10:01 PM ESTWind AdvisoryCTP12 hr
Jan 5, 2:03 AM ESTWinter Weather AdvisoryCTP6 hr
Jan 7, 4:04 AM ESTWinter Weather AdvisoryCTP32 hr
Jan 8, 3:26 PM ESTSpecial Weather StatementCTP34 min
Jan 16, 4:17 AM ESTWinter Weather AdvisoryCTP6 hr
Jan 17, 4:17 AM ESTWinter Storm WatchCTP33 hr
Jan 18, 4:45 AM ESTWinter Storm WarningCTP53 hr
Jan 19, 6:24 PM ESTMesoscale DiscussionSPC3 hr
Jan 19, 9:33 PM ESTMesoscale DiscussionSPC3 hr
Jan 20, 4:06 AM ESTWind Chill WarningCTP39 hr
Jan 22, 12:45 PM ESTWinter Weather AdvisoryCTP30 hr
Jan 24, 11:26 AM ESTAreal Flood AdvisoryCTP3 hr
Jan 26, 2:52 PM ESTWinter Weather AdvisoryCTP20 hr
Jan 27, 9:05 AM ESTSnow Squall WarningCTP55 min
Jan 27, 9:27 AM ESTMesoscale DiscussionSPC6 hr
Jan 28, 3:13 PM ESTWind Chill WatchCTP23 hr
Jan 29, 2:31 PM ESTWind Chill WarningCTP45 hr
Jan 29, 2:31 PM ESTWind Chill AdvisoryCTP63 hr
Jan 30, 6:56 AM ESTSpecial Weather StatementCTP49 min
Jan 30, 9:13 AM ESTSnow Squall WarningCTP47 min
Feb 7, 1:37 AM ESTDense Fog AdvisoryCTP9 hr
Feb 7, 10:30 AM ESTFlood WatchCTP18 hr
Feb 10, 12:25 PM ESTWinter Weather AdvisoryCTP64 hr
Feb 10, 3:55 PM ESTWinter Storm WatchCTP21 hr
Feb 11, 3:50 AM ESTWinter Storm WarningCTP38 hr
Feb 12, 10:48 AM ESTMesoscale DiscussionSPC4 hr
Feb 12, 3:35 PM ESTMesoscale DiscussionSPC4 hr
Feb 17, 4:05 AM ESTWinter Weather AdvisoryCTP33 hr
Feb 19, 2:34 PM ESTWinter Weather AdvisoryCTP37 hr
Feb 20, 6:32 PM ESTMesoscale DiscussionSPC4 hr
Feb 22, 4:12 AM ESTHigh Wind WatchCTP34 hr
Feb 23, 10:29 AM ESTWinter Weather AdvisoryCTP21 hr
Feb 23, 2:24 PM ESTHigh Wind WarningCTP47 hr
Feb 25, 12:54 PM ESTWind AdvisoryCTP6 hr
Feb 26, 2:40 PM ESTWinter Weather AdvisoryCTP33 hr
Mar 1, 3:06 PM ESTWinter Storm WatchCTP37 hr
Mar 2, 2:37 PM ESTWinter Weather AdvisoryCTP34 hr
Mar 9, 12:54 PM ESTWinter Weather AdvisoryCTP19 hr
Mar 16, 10:53 AM EDTSpecial Weather StatementCTP37 min
Mar 16, 11:30 AM EDTSpecial Weather StatementCTP30 min
Apr 2, 10:53 AM EDTFire Weather WatchCTP16 hr
Apr 3, 3:07 AM EDTRed Flag WarningCTP18 hr
Apr 14, 5:57 PM EDTMesoscale DiscussionSPC63 min
Apr 14, 6:46 PM EDTTornado WatchSPC8 hr
Apr 14, 7:21 PM EDTMesoscale DiscussionSPC54 min
Apr 14, 9:14 PM EDTMesoscale DiscussionSPC61 min
Apr 14, 9:34 PM EDTSevere Thunderstorm WarningCTP56 min
Apr 14, 10:31 PM EDTSpecial Weather StatementCTP29 min
Apr 14, 10:50 PM EDTSevere Thunderstorm WarningCTP55 min
Apr 26, 2:32 PM EDTSpecial Weather StatementCTP58 min
Apr 27, 2:45 PM EDTWinter Weather AdvisoryCTP15 hr
May 6, 3:15 AM EDTDense Fog AdvisoryCTP6 hr
May 10, 3:16 AM EDTAreal Flood AdvisoryCTP3 hr
May 19, 1:27 PM EDTMesoscale DiscussionSPC2 hr
May 19, 2:36 PM EDTSevere Thunderstorm WatchSPC8 hr
May 23, 9:39 AM EDTSevere Thunderstorm WatchSPC3 hr
May 23, 11:17 AM EDTSpecial Weather StatementCTP28 min
May 23, 7:10 PM EDTMesoscale DiscussionSPC65 min
May 25, 12:53 PM EDTMesoscale DiscussionSPC2 hr
May 25, 3:49 PM EDTSpecial Weather StatementCTP41 min
May 25, 4:30 PM EDTSpecial Weather StatementCTP45 min
May 25, 5:30 PM EDTSpecial Weather StatementCTP30 min
May 25, 8:09 PM EDTSevere Thunderstorm WarningCTP51 min
May 25, 8:16 PM EDTMesoscale DiscussionSPC59 min
May 25, 8:57 PM EDTSpecial Weather StatementCTP63 min
May 28, 1:02 PM EDTMesoscale DiscussionSPC118 min
May 28, 1:48 PM EDTTornado WatchSPC8 hr
May 28, 2:41 PM EDTSevere Thunderstorm WarningCTP34 min
May 28, 2:59 PM EDTSevere Thunderstorm WarningCTP46 min
May 28, 4:43 PM EDTMesoscale DiscussionSPC2 hr
May 28, 8:07 PM EDTMesoscale DiscussionSPC113 min
May 29, 12:06 PM EDTMesoscale DiscussionSPC84 min
May 29, 1:41 PM EDTSevere Thunderstorm WarningCTP49 min
May 29, 2:00 PM EDTSevere Thunderstorm WarningCTP45 min
Jun 1, 2:28 PM EDTMesoscale DiscussionSPC2 hr
Jun 1, 3:32 PM EDTSpecial Weather StatementCTP28 min
Jun 1, 3:40 PM EDTSevere Thunderstorm WarningCTP50 min
Jun 1, 4:50 PM EDTAreal Flood AdvisoryCTP3 hr
Jun 1, 5:53 PM EDTMesoscale DiscussionSPC97 min
Jun 1, 7:11 PM EDTSpecial Weather StatementCTP64 min
Jun 3, 2:44 PM EDTFrost AdvisoryCTP17 hr
Jun 20, 4:17 AM EDTFlash Flood WatchCTP24 hr
Jun 20, 12:22 PM EDTSpecial Weather StatementCTP53 min
Jun 26, 1:56 PM EDTMesoscale DiscussionSPC94 min
Jun 29, 11:11 AM EDTSpecial Weather StatementCTP49 min
Jun 29, 11:34 AM EDTMesoscale DiscussionSPC86 min
Jun 29, 12:08 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 29, 1:45 PM EDTMesoscale DiscussionSPC90 min
Jun 29, 3:09 PM EDTSpecial Weather StatementCTP66 min
Jul 6, 11:55 AM EDTMesoscale DiscussionSPC3 hr
Jul 6, 2:19 PM EDTSpecial Weather StatementCTP56 min
Jul 6, 3:08 PM EDTAreal Flood AdvisoryCTP112 min
Jul 10, 8:07 PM EDTSpecial Weather StatementCTP53 min
Jul 10, 8:39 PM EDTSpecial Weather StatementCTP36 min
Jul 17, 1:03 PM EDTMesoscale DiscussionSPC2 hr
Jul 18, 3:02 PM EDTHeat AdvisoryCTP53 hr
Jul 19, 1:38 PM EDTMesoscale DiscussionSPC2 hr
Jul 19, 2:29 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 4:40 PM EDTMesoscale DiscussionSPC2 hr
Jul 19, 6:25 PM EDTSpecial Weather StatementCTP35 min
Jul 19, 6:54 PM EDTMesoscale DiscussionSPC96 min
Jul 28, 3:19 PM EDTMesoscale DiscussionSPC116 min
Jul 28, 5:14 PM EDTSevere Thunderstorm WarningCTP46 min
Jul 28, 6:00 PM EDTSpecial Weather StatementCTP30 min
Jul 28, 6:24 PM EDTSevere Thunderstorm WarningCTP36 min
Jul 30, 12:59 PM EDTMesoscale DiscussionSPC2 hr
Jul 30, 1:22 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 3, 12:40 AM EDTDense Fog AdvisoryCTP8 hr
Aug 3, 1:02 PM EDTMesoscale DiscussionSPC2 hr
Aug 8, 11:58 AM EDTMesoscale DiscussionSPC92 min
Aug 8, 12:37 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 8, 1:14 PM EDTSpecial Weather StatementCTP46 min
Aug 8, 2:15 PM EDTSpecial Weather StatementCTP15 min
Aug 8, 2:28 PM EDTSpecial Weather StatementCTP47 min
Aug 15, 1:15 PM EDTMesoscale DiscussionSPC2 hr
Aug 15, 5:10 PM EDTSpecial Weather StatementCTP35 min
Aug 15, 5:28 PM EDTSevere Thunderstorm WarningCTP62 min
Aug 15, 6:32 PM EDTAreal Flood AdvisoryCTP3 hr
Aug 15, 6:44 PM EDTSpecial Weather StatementCTP31 min
Aug 15, 6:51 PM EDTSevere Thunderstorm WarningCTP54 min
Aug 15, 7:27 PM EDTFlash Flood WarningCTP3 hr
Aug 15, 7:33 PM EDTSevere Thunderstorm WarningCTP57 min
Aug 15, 7:38 PM EDTSevere Thunderstorm WarningCTP67 min
Aug 17, 1:27 PM EDTMesoscale DiscussionSPC2 hr
Aug 17, 3:59 PM EDTSevere Thunderstorm WarningCTP61 min
Aug 17, 4:03 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 18, 12:40 PM EDTSpecial Weather StatementCTP50 min
Aug 18, 12:55 PM EDTMesoscale DiscussionSPC65 min
Aug 18, 1:36 PM EDTSevere Thunderstorm WarningCTP54 min
Aug 18, 2:28 PM EDTSevere Thunderstorm WarningCTP62 min
Sep 3, 5:27 AM EDTDense Fog AdvisoryCTP4 hr
Sep 11, 3:08 PM EDTMesoscale DiscussionSPC2 hr
Sep 23, 3:23 PM EDTMesoscale DiscussionSPC97 min
Oct 3, 3:18 PM EDTFreeze WatchCTP20 hr
Oct 4, 10:49 AM EDTFreeze WarningCTP22 hr
Oct 8, 3:15 AM EDTDense Fog AdvisoryCTP6 hr
Oct 12, 3:06 AM EDTFrost AdvisoryCTP31 hr
Oct 31, 4:32 AM EDTWind AdvisoryCTP29 hr
Oct 31, 5:10 PM EDTSpecial Weather StatementCTP50 min
Oct 31, 5:36 PM EDTSpecial Weather StatementCTP24 min
Oct 31, 5:53 PM EDTAreal Flood AdvisoryCTP3 hr
Nov 11, 4:14 AM ESTWinter Weather AdvisoryCTP27 hr
Nov 23, 10:26 PM ESTWinter Weather AdvisoryCTP8 hr
Nov 26, 2:32 PM ESTWind AdvisoryCTP45 hr
Nov 29, 2:17 PM ESTWinter Weather AdvisoryCTP71 hr
Nov 30, 7:29 PM ESTWinter Weather AdvisoryCTP63 hr
Dec 1, 5:45 AM ESTMesoscale DiscussionSPC6 hr
Dec 14, 8:20 AM ESTDense Fog AdvisoryCTP3 hr
Dec 16, 4:24 AM ESTWinter Weather AdvisoryCTP31 hr
Dec 18, 10:07 AM ESTSpecial Weather StatementCTP53 min
Dec 18, 10:32 AM ESTSnow Squall WarningCTP43 min
Dec 31, 1:47 PM ESTMesoscale DiscussionSPC3 hr
Dec 31, 2:11 PM ESTSnow Squall WarningCTP79 min
Dec 31, 3:19 PM ESTSnow Squall WarningCTP86 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 archive20182020

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.