Alert archive / Pennsylvania / Sullivan County

Weather alerts in Sullivan County, Pennsylvania, 2023

144 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sullivan County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
144
Warnings
21
Watches
20
Advisories
40
Busiest month
July41 alerts
Busiest day
June 26, 20239 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 3 tornado warnings covering Sullivan County in 2023 had a tornado report inside them.

Sullivan County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings10550%30%
Flash flood warnings20100%0

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings18572%1540%3 min
NWS State College, PA: severe thunderstorm warnings18613627%38183%19 min
NWS State College, PA: flash flood warnings8363%863%42 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, 2:21 AM ESTDense Fog AdvisoryCTP7 hr
Jan 3, 11:19 PM ESTDense Fog AdvisoryCTP12 hr
Jan 16, 2:04 PM ESTWinter Weather AdvisoryCTP20 hr
Jan 18, 2:33 PM ESTWinter Weather AdvisoryCTP22 hr
Jan 21, 2:13 PM ESTWinter Weather AdvisoryCTP43 hr
Jan 24, 4:16 AM ESTWinter Storm WatchCTP23 hr
Jan 24, 4:16 AM ESTWinter Weather AdvisoryCTP42 hr
Feb 2, 3:32 AM ESTWind Chill AdvisoryCTP52 hr
Feb 2, 10:39 PM ESTMesoscale DiscussionSPC4 hr
Feb 9, 1:18 AM ESTWinter Weather AdvisoryCTP8 hr
Feb 21, 1:19 PM ESTSpecial Weather StatementCTP26 min
Feb 21, 2:36 PM ESTSpecial Weather StatementCTP54 min
Feb 21, 3:45 PM ESTWinter Weather AdvisoryCTP28 hr
Feb 25, 8:16 AM ESTSpecial Weather StatementCTP44 min
Feb 25, 9:31 AM ESTSpecial Weather StatementCTP29 min
Feb 26, 3:45 PM ESTWinter Weather AdvisoryCTP43 hr
Mar 2, 1:39 PM ESTWinter Weather AdvisoryCTP43 hr
Mar 6, 3:44 AM ESTWinter Weather AdvisoryCTP25 hr
Mar 6, 2:47 PM ESTWinter Storm WarningCTP14 hr
Mar 6, 6:51 PM ESTMesoscale DiscussionSPC4 hr
Mar 9, 10:33 AM ESTWinter Weather AdvisoryCTP40 hr
Mar 13, 4:22 AM EDTWinter Weather AdvisoryCTP38 hr
Mar 29, 8:36 PM EDTSpecial Weather StatementCTP54 min
Mar 31, 3:22 PM EDTWind AdvisoryCTP35 hr
Apr 1, 2:02 PM EDTMesoscale DiscussionSPC118 min
Apr 1, 2:27 PM EDTSevere Thunderstorm WatchSPC5 hr
Apr 5, 10:42 PM EDTSevere Thunderstorm WarningCTP18 min
Apr 11, 3:49 PM EDTFire Weather WatchCTP17 hr
Apr 12, 8:54 AM EDTRed Flag WarningCTP11 hr
Apr 17, 12:05 AM EDTSpecial Weather StatementCTP70 min
Apr 17, 1:15 AM EDTSpecial Weather StatementCTP60 min
Apr 22, 2:47 PM EDTMesoscale DiscussionSPC118 min
Apr 30, 8:31 AM EDTFlood WatchCTP11 hr
May 14, 1:03 PM EDTFrost AdvisoryCTP18 hr
May 16, 3:09 PM EDTFreeze WatchCTP20 hr
May 17, 11:05 AM EDTFreeze WarningCTP21 hr
May 25, 2:45 AM EDTFrost AdvisoryCTP28 hr
May 26, 1:00 PM EDTFrost AdvisoryCTP19 hr
Jun 3, 1:27 PM EDTMesoscale DiscussionSPC2 hr
Jun 5, 3:30 PM EDTFire Weather WatchCTP17 hr
Jun 6, 8:26 AM EDTRed Flag WarningCTP12 hr
Jun 6, 1:10 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 3:49 AM EDTFlood WatchCTP19 hr
Jun 26, 8:37 AM EDTSevere Thunderstorm WarningCTP38 min
Jun 26, 9:14 AM EDTSevere Thunderstorm WarningCTP46 min
Jun 26, 9:37 AM EDTMesoscale DiscussionSPC83 min
Jun 26, 9:58 AM EDTSpecial Weather StatementCTP62 min
Jun 26, 12:36 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 1:06 PM EDTSpecial Weather StatementCTP24 min
Jun 26, 1:11 PM EDTSevere Thunderstorm WatchSPC11 hr
Jun 26, 2:14 PM EDTSpecial Weather StatementCTP31 min
Jun 26, 8:03 PM EDTMesoscale DiscussionSPC87 min
Jun 26, 10:07 PM EDTSpecial Weather StatementBGM38 min
Jun 26, 10:08 PM EDTSpecial Weather StatementCTP37 min
Jun 27, 2:25 PM EDTSpecial Weather StatementCTP65 min
Jul 1, 1:54 PM EDTMesoscale DiscussionSPC2 hr
Jul 2, 3:24 PM EDTMesoscale DiscussionSPC96 min
Jul 2, 4:33 PM EDTSpecial Weather StatementCTP27 min
Jul 2, 4:59 PM EDTSpecial Weather StatementCTP31 min
Jul 4, 4:10 AM EDTDense Fog AdvisoryCTP5 hr
Jul 7, 4:27 PM EDTSpecial Weather StatementCTP48 min
Jul 8, 3:12 PM EDTFlood WatchCTP26 hr
Jul 9, 4:30 AM EDTSpecial Weather StatementCTP30 min
Jul 9, 5:08 AM EDTAreal Flood AdvisoryCTP2 hr
Jul 9, 5:13 AM EDTSpecial Weather StatementCTP62 min
Jul 9, 8:14 AM EDTSpecial Weather StatementCTP31 min
Jul 9, 8:54 AM EDTAreal Flood AdvisoryCTP3 hr
Jul 9, 9:22 AM EDTFlash Flood WarningCTP4 hr
Jul 9, 1:16 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 13, 2:36 PM EDTMesoscale DiscussionSPC2 hr
Jul 13, 2:56 PM EDTSpecial Weather StatementCTP34 min
Jul 14, 1:14 AM EDTSpecial Weather StatementCTP61 min
Jul 14, 5:04 PM EDTSevere Thunderstorm WarningCTP41 min
Jul 14, 5:16 PM EDTSevere Thunderstorm WarningCTP44 min
Jul 15, 5:50 AM EDTDense Fog AdvisoryCTP3 hr
Jul 15, 6:44 PM EDTFlood WatchCTP23 hr
Jul 15, 8:15 PM EDTSevere Thunderstorm WarningCTP45 min
Jul 15, 8:53 PM EDTSpecial Weather StatementCTP37 min
Jul 15, 9:48 PM EDTSevere Thunderstorm WarningCTP42 min
Jul 15, 10:21 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 15, 10:53 PM EDTFlash Flood WarningCTP3 hr
Jul 16, 1:06 AM EDTAreal Flood AdvisoryCTP2 hr
Jul 16, 1:38 AM EDTAreal Flood WarningCTP6 hr
Jul 17, 7:42 PM EDTSpecial Weather StatementCTP48 min
Jul 20, 6:19 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 20, 10:07 PM EDTMesoscale DiscussionSPC113 min
Jul 20, 10:31 PM EDTSevere Thunderstorm WarningCTP44 min
Jul 20, 11:12 PM EDTSevere Thunderstorm WarningCTP48 min
Jul 24, 9:13 AM EDTSpecial Weather StatementCTP32 min
Jul 24, 11:58 AM EDTMesoscale DiscussionSPC2 hr
Jul 24, 2:56 PM EDTMesoscale DiscussionSPC2 hr
Jul 24, 8:10 PM EDTSpecial Weather StatementCTP35 min
Jul 24, 8:46 PM EDTSpecial Weather StatementCTP44 min
Jul 27, 11:40 AM EDTMesoscale DiscussionSPC2 hr
Jul 27, 3:30 PM EDTSpecial Weather StatementCTP75 min
Jul 29, 4:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 4, 11:21 AM EDTMesoscale DiscussionSPC114 min
Aug 4, 12:10 PM EDTSevere Thunderstorm WatchSPC10 hr
Aug 4, 2:49 PM EDTMesoscale DiscussionSPC116 min
Aug 4, 6:13 PM EDTMesoscale DiscussionSPC2 hr
Aug 5, 5:57 AM EDTDense Fog AdvisoryCTP3 hr
Aug 7, 1:20 PM EDTTornado WatchSPC11 hr
Aug 7, 3:17 PM EDTMesoscale DiscussionSPC88 min
Aug 7, 3:18 PM EDTTornado WarningCTP27 min
Aug 7, 3:29 PM EDTAreal Flood AdvisoryCTP91 min
Aug 7, 3:31 PM EDTSpecial Weather StatementCTP29 min
Aug 7, 3:46 PM EDTTornado WarningCTP29 min
Aug 7, 4:16 PM EDTTornado WarningCTP44 min
Aug 7, 4:40 PM EDTMesoscale DiscussionSPC95 min
Aug 7, 5:11 PM EDTAreal Flood AdvisoryCTP2 hr
Aug 12, 12:50 PM EDTTornado WatchSPC8 hr
Aug 12, 2:43 PM EDTSpecial Weather StatementCTP47 min
Aug 12, 4:04 PM EDTMesoscale DiscussionSPC116 min
Aug 15, 6:39 PM EDTSpecial Weather StatementCTP36 min
Aug 15, 7:05 PM EDTMesoscale DiscussionSPC115 min
Aug 17, 10:37 PM EDTAreal Flood AdvisoryCTP3 hr
Aug 17, 11:04 PM EDTMesoscale DiscussionSPC3 hr
Aug 18, 12:11 AM EDTAreal Flood AdvisoryCTP94 min
Aug 18, 1:41 AM EDTAreal Flood AdvisoryCTP3 hr
Aug 18, 6:23 AM EDTAreal Flood AdvisoryCTP4 hr
Aug 29, 1:57 PM EDTFlood WatchCTP14 hr
Aug 30, 2:25 AM EDTAreal Flood AdvisoryCTP2 hr
Aug 30, 2:26 AM EDTSpecial Weather StatementCTP34 min
Sep 7, 11:58 AM EDTMesoscale DiscussionSPC3 hr
Sep 7, 1:14 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 7, 3:06 PM EDTMesoscale DiscussionSPC84 min
Sep 7, 3:58 PM EDTSevere Thunderstorm WarningCTP47 min
Sep 9, 2:08 PM EDTMesoscale DiscussionSPC3 hr
Sep 9, 4:23 PM EDTSevere Thunderstorm WatchSPC5 hr
Sep 9, 5:04 PM EDTSpecial Weather StatementCTP26 min
Sep 9, 6:00 PM EDTAreal Flood AdvisoryCTP4 hr
Sep 9, 6:06 PM EDTMesoscale DiscussionSPC114 min
Sep 9, 8:08 PM EDTMesoscale DiscussionSPC2 hr
Sep 12, 3:19 PM EDTFlood WatchCTP12 hr
Oct 1, 2:31 AM EDTDense Fog AdvisoryCTP7 hr
Oct 3, 3:46 AM EDTDense Fog AdvisoryCTP6 hr
Oct 4, 2:53 AM EDTDense Fog AdvisoryCTP7 hr
Oct 7, 1:53 AM EDTAreal Flood AdvisoryCTP2 hr
Dec 8, 2:50 PM ESTFlood WatchCTP58 hr
Dec 10, 11:07 AM ESTWinter Weather AdvisoryCTP18 hr
Dec 16, 1:39 PM ESTFlood WatchCTP46 hr
Dec 18, 12:37 AM ESTAreal Flood AdvisoryCTP6 hr
Dec 18, 2:21 AM ESTAreal Flood WarningCTP14 hr
Dec 23, 3:20 AM ESTSpecial Weather StatementCTP55 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 archive20222024

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.