Alert archive / Pennsylvania / Sullivan County

Weather alerts in Sullivan County, Pennsylvania, 2015

108 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts
108
Warnings
14
Watches
18
Advisories
30
Busiest month
June21 alerts
Busiest day
July 9, 20156 alerts

Over time

By month

Warning verification

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

Sullivan County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5180%333%66 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings12192%714%11 min
NWS State College, PA: severe thunderstorm warnings17411136%30278%27 min
NWS State College, PA: flash flood warnings17947%1593%47 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, 3:04 PM ESTWinter Weather AdvisoryCTP29 hr
Jan 3, 9:59 AM ESTMesoscale DiscussionSPC4 hr
Jan 6, 3:28 PM ESTWind Chill AdvisoryCTP46 hr
Jan 7, 10:47 AM ESTSpecial Weather StatementCTP73 min
Jan 9, 4:23 AM ESTWind Chill AdvisoryCTP32 hr
Jan 11, 4:49 AM ESTWinter Weather AdvisoryCTP38 hr
Jan 18, 6:48 PM ESTSpecial Weather StatementCTP3 hr
Jan 18, 9:44 PM ESTSpecial Weather StatementCTP3 hr
Jan 23, 3:58 AM ESTWinter Weather AdvisoryCTP32 hr
Jan 24, 5:35 PM ESTFreezing Rain AdvisoryCTP11 hr
Jan 30, 3:19 AM ESTWind Chill AdvisoryCTP29 hr
Jan 30, 3:42 PM ESTWinter Storm WatchCTP23 hr
Jan 31, 2:57 PM ESTWinter Storm WarningCTP43 hr
Feb 1, 9:52 PM ESTMesoscale DiscussionSPC6 hr
Feb 2, 2:48 PM ESTWind Chill AdvisoryCTP17 hr
Feb 5, 3:50 AM ESTWind Chill AdvisoryCTP29 hr
Feb 8, 4:23 AM ESTWinter Weather AdvisoryCTP34 hr
Feb 11, 4:02 AM ESTWind Chill WatchCTP23 hr
Feb 12, 3:10 AM ESTWind Chill WarningCTP32 hr
Feb 13, 3:22 AM ESTWind Chill WatchCTP24 hr
Feb 13, 2:16 PM ESTWinter Weather AdvisoryCTP41 hr
Feb 14, 3:12 AM ESTWind AdvisoryCTP37 hr
Feb 14, 3:42 AM ESTWind Chill WarningCTP54 hr
Feb 14, 5:52 PM ESTSpecial Weather StatementCTP38 min
Feb 14, 6:35 PM ESTSpecial Weather StatementCTP40 min
Feb 18, 4:05 AM ESTWind Chill WarningCTP56 hr
Feb 18, 7:57 PM ESTSpecial Weather StatementCTP33 min
Feb 20, 3:10 PM ESTWinter Storm WarningCTP39 hr
Feb 20, 3:10 PM ESTWinter Weather AdvisoryCTP39 hr
Feb 22, 3:13 AM ESTWind Chill WatchCTP10 hr
Feb 22, 3:13 AM ESTWind Chill AdvisoryCTP54 hr
Feb 23, 3:39 AM ESTWind Chill WarningCTP29 hr
Feb 28, 12:14 PM ESTWinter Weather AdvisoryCTP43 hr
Mar 2, 1:54 PM ESTWinter Weather AdvisoryCTP41 hr
Mar 3, 7:01 PM ESTMesoscale DiscussionSPC4 hr
Mar 10, 5:30 PM EDTDense Fog AdvisoryCTP16 hr
Mar 10, 9:55 PM EDTSpecial Weather StatementCTP3 hr
Mar 19, 4:09 AM EDTWinter Weather AdvisoryCTP38 hr
Mar 26, 4:07 AM EDTSpecial Weather StatementCTP3 hr
Mar 30, 4:00 PM EDTSpecial Weather StatementCTP3 hr
Mar 30, 7:45 PM EDTSpecial Weather StatementCTP9 hr
Mar 31, 3:11 AM EDTWinter Weather AdvisoryCTP17 hr
Apr 17, 2:39 PM EDTFire Weather WatchCTP12 hr
Apr 18, 2:54 AM EDTRed Flag WarningCTP17 hr
Apr 20, 3:08 PM EDTTornado WatchSPC9 hr
Apr 20, 3:23 PM EDTMesoscale DiscussionSPC2 hr
Apr 20, 5:57 PM EDTMesoscale DiscussionSPC2 hr
Apr 20, 8:47 PM EDTSevere Thunderstorm WarningCTP58 min
May 3, 4:43 PM EDTFire Weather WatchCTP12 hr
May 4, 4:15 AM EDTRed Flag WarningCTP15 hr
May 13, 4:18 AM EDTFrost AdvisoryCTP28 hr
May 16, 1:35 PM EDTMesoscale DiscussionSPC2 hr
May 18, 4:30 PM EDTSpecial Weather StatementCTP45 min
May 22, 2:18 AM EDTFrost AdvisoryCTP30 hr
May 22, 2:18 AM EDTFreeze WarningCTP30 hr
May 27, 12:18 PM EDTSpecial Weather StatementCTP27 min
May 27, 12:52 PM EDTSpecial Weather StatementCTP23 min
May 27, 12:54 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 3, 5:46 AM EDTDense Fog AdvisoryCTP2 hr
Jun 8, 1:31 PM EDTMesoscale DiscussionSPC119 min
Jun 8, 2:34 PM EDTTornado WatchSPC5 hr
Jun 8, 2:58 PM EDTMesoscale DiscussionSPC92 min
Jun 8, 3:20 PM EDTMesoscale DiscussionSPC85 min
Jun 8, 3:49 PM EDTSevere Thunderstorm WarningCTP71 min
Jun 9, 11:23 AM EDTSpecial Weather StatementCTP52 min
Jun 11, 2:47 PM EDTMesoscale DiscussionSPC118 min
Jun 12, 2:03 PM EDTMesoscale DiscussionSPC87 min
Jun 12, 7:25 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 12, 8:01 PM EDTSevere Thunderstorm WarningCTP59 min
Jun 14, 2:51 PM EDTFlash Flood WatchCTP14 hr
Jun 21, 1:12 AM EDTAreal Flood AdvisoryCTP3 hr
Jun 23, 6:08 AM EDTSevere Thunderstorm WatchSPC4 hr
Jun 23, 8:39 AM EDTMesoscale DiscussionSPC96 min
Jun 26, 3:55 AM EDTFlood WatchCTP44 hr
Jun 30, 9:28 AM EDTSpecial Weather StatementCTP32 min
Jun 30, 12:31 PM EDTMesoscale DiscussionSPC2 hr
Jun 30, 1:21 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 30, 7:38 PM EDTMesoscale DiscussionSPC67 min
Jun 30, 7:57 PM EDTSpecial Weather StatementCTP63 min
Jun 30, 9:45 PM EDTSevere Thunderstorm WarningCTP60 min
Jul 4, 11:08 AM EDTAreal Flood AdvisoryCTP3 hr
Jul 5, 3:57 AM EDTDense Fog AdvisoryCTP5 hr
Jul 9, 4:50 AM EDTFlash Flood WatchCTP12 hr
Jul 9, 12:59 PM EDTMesoscale DiscussionSPC2 hr
Jul 9, 1:27 PM EDTTornado WatchSPC6 hr
Jul 9, 3:09 PM EDTMesoscale DiscussionSPC96 min
Jul 9, 5:14 PM EDTSpecial Weather StatementCTP31 min
Jul 9, 5:20 PM EDTSevere Thunderstorm WarningCTP29 min
Jul 14, 9:01 PM EDTSpecial Weather StatementCTP44 min
Jul 14, 11:32 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 18, 6:19 PM EDTSpecial Weather StatementCTP26 min
Jul 19, 3:06 PM EDTSpecial Weather StatementCTP24 min
Jul 19, 3:18 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 3:33 PM EDTSpecial Weather StatementCTP42 min
Jul 19, 8:32 PM EDTMesoscale DiscussionSPC88 min
Jul 21, 12:53 PM EDTMesoscale DiscussionSPC67 min
Jul 21, 3:25 PM EDTSpecial Weather StatementCTP50 min
Jul 26, 3:34 PM EDTMesoscale DiscussionSPC116 min
Aug 20, 11:49 AM EDTMesoscale DiscussionSPC2 hr
Aug 20, 3:45 PM EDTMesoscale DiscussionSPC3 hr
Sep 1, 8:51 AM EDTSpecial Weather StatementCTP114 min
Sep 4, 8:48 AM EDTSpecial Weather StatementCTP117 min
Sep 6, 6:48 AM EDTSpecial Weather StatementCTP3 hr
Sep 29, 4:19 AM EDTFlash Flood WatchCTP24 hr
Dec 10, 5:35 AM ESTDense Fog AdvisoryCTP4 hr
Dec 10, 10:03 AM ESTDense Fog AdvisoryCTP117 min
Dec 22, 9:30 PM ESTDense Fog AdvisoryCTP15 hr
Dec 28, 3:44 AM ESTWinter Weather AdvisoryCTP30 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 archive20142016

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.