Alert archive / Pennsylvania / Tioga County

Weather alerts in Tioga County, Pennsylvania, 2012

136 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Tioga County and its neighbors

Each county as a circle sized by its count in 2012. Tap one for its archive.

Alerts
136
Warnings
39
Watches
20
Advisories
22
Busiest month
July27 alerts
Busiest day
July 7, 20129 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 Tioga County in 2012 had a tornado report inside them.

Tioga County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings221818%1182%29 min
Flash flood warnings110%3100%58 min

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings6267%850%24 min
NWS State College, PA: severe thunderstorm warnings22613341%37084%28 min
NWS State College, PA: flash flood warnings211148%2488%62 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 2, 9:08 AM ESTSpecial Weather StatementCTP3 hr
Jan 12, 4:50 AM ESTWinter Weather AdvisoryCTP41 hr
Jan 12, 2:36 PM ESTWind AdvisoryCTP28 hr
Jan 14, 1:29 PM ESTSpecial Weather StatementCTP31 min
Jan 14, 2:33 PM ESTSpecial Weather StatementCTP27 min
Jan 16, 4:10 AM ESTWinter Weather AdvisoryCTP26 hr
Jan 17, 8:06 PM ESTSpecial Weather StatementCTP54 min
Jan 19, 8:34 PM ESTSpecial Weather StatementCTP86 min
Jan 20, 4:28 AM ESTWinter Weather AdvisoryCTP30 hr
Jan 22, 3:09 AM ESTFreezing Rain AdvisoryCTP33 hr
Jan 29, 6:17 PM ESTSpecial Weather StatementCTP118 min
Feb 18, 8:38 AM ESTSpecial Weather StatementCTP52 min
Feb 18, 1:36 PM ESTSpecial Weather StatementCTP24 min
Feb 23, 2:05 PM ESTWinter Weather AdvisoryCTP16 hr
Feb 23, 9:52 PM ESTWind AdvisoryCTP37 hr
Feb 23, 11:48 PM ESTMesoscale DiscussionSPC4 hr
Feb 28, 3:04 PM ESTWinter Weather AdvisoryCTP22 hr
Mar 4, 10:35 AM ESTSpecial Weather StatementCTP55 min
Mar 8, 7:50 PM ESTSpecial Weather StatementCTP40 min
Mar 20, 8:06 AM EDTSpecial Weather StatementCTP24 min
Apr 5, 4:06 PM EDTFire Weather WatchCTP12 hr
Apr 6, 4:19 AM EDTRed Flag WarningCTP16 hr
Apr 6, 11:01 AM EDTRed Flag WarningCTP33 hr
Apr 7, 3:58 AM EDTFire Weather WatchCTP16 hr
Apr 7, 8:27 PM EDTRed Flag WarningCTP24 hr
Apr 8, 4:49 AM EDTFire Weather WatchCTP17 hr
Apr 8, 9:49 PM EDTRed Flag WarningCTP22 hr
Apr 16, 1:33 PM EDTMesoscale DiscussionSPC87 min
Apr 17, 5:50 AM EDTFreeze WatchCTP7 hr
Apr 17, 1:18 PM EDTFreeze WarningCTP20 hr
Apr 21, 4:17 PM EDTWinter Storm WatchCTP24 hr
Apr 22, 4:20 PM EDTWinter Storm WarningCTP34 hr
Apr 24, 7:00 PM EDTFreeze WarningCTP13 hr
Apr 26, 4:46 AM EDTFreeze WatchCTP10 hr
Apr 26, 2:39 PM EDTFreeze WarningCTP18 hr
Apr 27, 4:26 AM EDTFreeze WatchCTP5 hr
Apr 27, 9:40 AM EDTFreeze WarningCTP23 hr
Apr 28, 4:04 AM EDTFreeze WatchCTP11 hr
Apr 28, 2:34 PM EDTFreeze WarningCTP18 hr
Apr 29, 3:39 AM EDTFreeze WatchCTP6 hr
Apr 29, 9:51 AM EDTFreeze WarningCTP23 hr
May 2, 8:38 PM EDTSevere Thunderstorm WarningCTP52 min
May 2, 8:58 PM EDTSevere Thunderstorm WarningCTP62 min
May 2, 9:19 PM EDTAreal Flood AdvisoryCTP3 hr
May 2, 9:56 PM EDTSevere Thunderstorm WarningCTP34 min
May 3, 5:45 PM EDTMesoscale DiscussionSPC60 min
May 4, 12:19 AM EDTMesoscale DiscussionSPC86 min
May 4, 1:26 PM EDTMesoscale DiscussionSPC2 hr
May 10, 2:58 PM EDTFrost AdvisoryCTP17 hr
May 16, 2:09 PM EDTFrost AdvisoryCTP18 hr
May 16, 5:21 PM EDTSpecial Weather StatementCTP24 min
May 17, 1:05 PM EDTFrost AdvisoryCTP19 hr
May 28, 2:25 PM EDTMesoscale DiscussionSPC65 min
May 29, 12:01 PM EDTMesoscale DiscussionSPC59 min
May 29, 1:03 PM EDTSevere Thunderstorm WatchSPC8 hr
May 29, 1:32 PM EDTSevere Thunderstorm WarningCTP43 min
May 29, 2:13 PM EDTMesoscale DiscussionSPC62 min
May 29, 2:17 PM EDTSevere Thunderstorm WarningCTP58 min
May 29, 3:12 PM EDTMesoscale DiscussionSPC63 min
May 29, 3:13 PM EDTSevere Thunderstorm WarningCTP32 min
May 29, 3:36 PM EDTSevere Thunderstorm WarningCTP54 min
Jun 1, 5:46 PM EDTMesoscale DiscussionSPC89 min
Jun 1, 6:04 PM EDTTornado WatchSPC5 hr
Jun 1, 7:31 PM EDTSevere Thunderstorm WarningCTP59 min
Jun 1, 8:38 PM EDTSevere Thunderstorm WarningCTP52 min
Jun 3, 6:10 PM EDTSevere Thunderstorm WarningCTP50 min
Jun 3, 6:59 PM EDTSevere Thunderstorm WarningCTP61 min
Jun 3, 7:40 PM EDTSpecial Weather StatementCTP35 min
Jun 3, 7:50 PM EDTSevere Thunderstorm WarningCTP40 min
Jun 29, 3:14 AM EDTSpecial Weather StatementCTP31 min
Jul 7, 11:02 AM EDTSpecial Weather StatementCTP88 min
Jul 7, 11:19 AM EDTMesoscale DiscussionSPC86 min
Jul 7, 11:36 AM EDTSevere Thunderstorm WarningCTP39 min
Jul 7, 11:41 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 7, 1:36 PM EDTMesoscale DiscussionSPC84 min
Jul 7, 1:52 PM EDTSpecial Weather StatementCTP83 min
Jul 7, 2:24 PM EDTSevere Thunderstorm WarningCTP66 min
Jul 7, 3:26 PM EDTSevere Thunderstorm WarningCTP64 min
Jul 7, 3:57 PM EDTMesoscale DiscussionSPC2 hr
Jul 18, 10:25 AM EDTMesoscale DiscussionSPC2 hr
Jul 23, 12:32 PM EDTMesoscale DiscussionSPC88 min
Jul 23, 1:24 PM EDTSevere Thunderstorm WatchSPC10 hr
Jul 26, 4:31 AM EDTMesoscale DiscussionSPC89 min
Jul 26, 5:46 AM EDTSpecial Weather StatementCTP29 min
Jul 26, 12:26 PM EDTMesoscale DiscussionSPC2 hr
Jul 26, 1:16 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 26, 2:51 PM EDTSevere Thunderstorm WarningCTP69 min
Jul 26, 3:22 PM EDTTornado WarningCTP53 min
Jul 26, 3:29 PM EDTSevere Thunderstorm WarningCTP91 min
Jul 26, 3:37 PM EDTMesoscale DiscussionSPC113 min
Jul 28, 4:25 PM EDTSevere Thunderstorm WarningCTP65 min
Jul 31, 3:02 PM EDTSpecial Weather StatementCTP43 min
Jul 31, 3:59 PM EDTSpecial Weather StatementCTP31 min
Jul 31, 5:01 PM EDTSpecial Weather StatementCTP74 min
Jul 31, 7:34 PM EDTSpecial Weather StatementCTP26 min
Jul 31, 7:41 PM EDTAreal Flood AdvisoryCTP94 min
Jul 31, 7:56 PM EDTSpecial Weather StatementCTP34 min
Jul 31, 8:28 PM EDTSpecial Weather StatementCTP32 min
Aug 4, 5:57 PM EDTAreal Flood AdvisoryCTP2 hr
Aug 5, 2:49 PM EDTMesoscale DiscussionSPC86 min
Aug 9, 12:46 PM EDTMesoscale DiscussionSPC89 min
Aug 9, 12:54 PM EDTSevere Thunderstorm WarningCTP66 min
Aug 9, 2:00 PM EDTSpecial Weather StatementCTP60 min
Aug 9, 2:45 PM EDTSpecial Weather StatementBGM45 min
Sep 4, 3:48 PM EDTSpecial Weather StatementCTP27 min
Sep 6, 4:11 PM EDTAreal Flood AdvisoryCTP3 hr
Sep 6, 5:07 PM EDTFlash Flood WarningCTP6 hr
Sep 6, 5:24 PM EDTSpecial Weather StatementCTP66 min
Sep 6, 6:11 PM EDTSpecial Weather StatementCTP34 min
Sep 6, 6:45 PM EDTMesoscale DiscussionSPC60 min
Sep 6, 8:25 PM EDTSpecial Weather StatementCTP65 min
Sep 6, 10:54 PM EDTAreal Flood AdvisoryCTP6 hr
Sep 8, 8:42 AM EDTMesoscale DiscussionSPC93 min
Sep 8, 11:38 AM EDTMesoscale DiscussionSPC97 min
Sep 8, 11:49 AM EDTSevere Thunderstorm WarningCTP56 min
Sep 8, 12:15 PM EDTSevere Thunderstorm WatchSPC9 hr
Sep 8, 12:32 PM EDTSevere Thunderstorm WarningCTP58 min
Sep 8, 1:29 PM EDTSevere Thunderstorm WarningCTP61 min
Oct 7, 4:54 AM EDTFrost AdvisoryCTP28 hr
Oct 8, 5:31 AM EDTFreeze WatchCTP9 hr
Oct 8, 2:13 PM EDTFreeze WarningCTP18 hr
Oct 11, 3:42 AM EDTFreeze WatchCTP31 hr
Oct 12, 10:15 AM EDTFreeze WarningCTP22 hr
Oct 27, 4:39 AM EDTFlood WatchCTP3 days
Oct 27, 3:05 PM EDTHigh Wind WatchCTP13 hr
Oct 28, 4:11 AM EDTHigh Wind WarningCTP48 hr
Oct 30, 4:18 AM EDTWind AdvisoryCTP6 hr
Dec 6, 2:53 PM ESTFreezing Rain AdvisoryCTP20 hr
Dec 7, 3:44 AM ESTMesoscale DiscussionSPC6 hr
Dec 20, 12:26 PM ESTWinter Weather AdvisoryCTP49 hr
Dec 21, 5:37 AM ESTWind AdvisoryCTP37 hr
Dec 24, 4:00 PM ESTWinter Storm WatchCTP22 hr
Dec 25, 2:09 PM ESTWinter Storm WarningCTP40 hr
Dec 26, 11:40 AM ESTMesoscale DiscussionSPC6 hr
Dec 26, 2:14 PM ESTMesoscale DiscussionSPC6 hr
Dec 28, 2:57 AM ESTWinter Weather AdvisoryCTP58 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 archive20112013

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.