Alert archive / Pennsylvania / Franklin County

Weather alerts in Franklin County, Pennsylvania, 2016

104 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Franklin County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
104
Warnings
12
Watches
12
Advisories
29
Busiest month
July19 alerts
Busiest day
January 23, 20167 alerts

Over time

By month

Warning verification

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

Franklin County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5340%425%52 min
Flash flood warnings00

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings4325%771%14 min
NWS State College, PA: severe thunderstorm warnings1047330%19779%29 min
NWS State College, PA: flash flood warnings9633%9100%46 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 12, 3:54 PM ESTSpecial Weather StatementCTP66 min
Jan 20, 3:42 PM ESTWinter Storm WatchCTP37 hr
Jan 21, 2:47 PM ESTWinter Storm WarningCTP53 hr
Jan 23, 12:08 AM ESTMesoscale DiscussionSPC5 hr
Jan 23, 4:20 AM ESTMesoscale DiscussionSPC5 hr
Jan 23, 8:51 AM ESTMesoscale DiscussionSPC4 hr
Jan 23, 9:14 AM ESTSpecial Weather StatementCTP61 min
Jan 23, 11:40 AM ESTSpecial Weather StatementCTP50 min
Jan 23, 12:36 PM ESTSpecial Weather StatementCTP84 min
Jan 23, 2:30 PM ESTSpecial Weather StatementCTP75 min
Jan 25, 9:30 PM ESTFreezing Rain AdvisoryCTP12 hr
Feb 1, 2:10 PM ESTFlood WatchCTP62 hr
Feb 3, 7:43 PM ESTDense Fog AdvisoryCTP11 hr
Feb 4, 1:19 AM ESTAreal Flood AdvisoryCTP7 hr
Feb 8, 4:34 AM ESTWinter Weather AdvisoryCTP4 days
Feb 12, 4:35 AM ESTWind Chill AdvisoryCTP54 hr
Feb 12, 1:22 PM ESTWind AdvisoryCTP28 hr
Feb 14, 2:32 PM ESTWinter Weather AdvisoryCTP43 hr
Feb 15, 5:10 AM ESTWinter Storm WarningCTP35 hr
Feb 15, 8:29 PM ESTMesoscale DiscussionSPC5 hr
Feb 16, 10:28 AM ESTWinter Storm WarningCTP3 hr
Feb 23, 3:14 PM ESTFreezing Rain AdvisoryCTP17 hr
Feb 24, 4:54 PM ESTAreal Flood AdvisoryCTP3 hr
Feb 24, 4:59 PM ESTSpecial Weather StatementCTP31 min
Mar 16, 4:08 AM EDTDense Fog AdvisoryCTP6 hr
Mar 24, 5:49 PM EDTRed Flag WarningCTP2 hr
Mar 28, 3:42 AM EDTWind AdvisoryCTP18 hr
Apr 1, 1:46 PM EDTMesoscale DiscussionSPC119 min
Apr 1, 4:20 PM EDTWind AdvisoryCTP40 hr
Apr 2, 10:33 AM EDTHigh Wind WarningCTP22 hr
Apr 2, 8:34 PM EDTSpecial Weather StatementCTP56 min
Apr 12, 2:22 PM EDTFrost AdvisoryCTP18 hr
Apr 13, 2:05 PM EDTFrost AdvisoryCTP18 hr
Apr 14, 2:07 PM EDTFrost AdvisoryCTP18 hr
Apr 18, 1:04 PM EDTFire Weather WatchCTP15 hr
Apr 19, 4:22 AM EDTRed Flag WarningCTP16 hr
Apr 26, 1:19 PM EDTMesoscale DiscussionSPC86 min
Apr 26, 1:54 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 26, 6:46 PM EDTMesoscale DiscussionSPC59 min
Apr 26, 7:01 PM EDTSpecial Weather StatementCTP29 min
May 23, 2:25 AM EDTDense Fog AdvisoryCTP6 hr
May 27, 5:25 PM EDTSpecial Weather StatementCTP65 min
Jun 3, 12:59 PM EDTSpecial Weather StatementCTP46 min
Jun 5, 1:14 PM EDTMesoscale DiscussionSPC91 min
Jun 5, 2:50 PM EDTSpecial Weather StatementCTP25 min
Jun 11, 2:32 PM EDTMesoscale DiscussionSPC58 min
Jun 16, 1:08 PM EDTMesoscale DiscussionSPC97 min
Jun 16, 1:58 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 16, 4:09 PM EDTFlash Flood WatchCTP11 hr
Jun 21, 11:40 AM EDTSpecial Weather StatementCTP20 min
Jun 21, 12:00 PM EDTMesoscale DiscussionSPC90 min
Jun 21, 12:01 PM EDTSpecial Weather StatementCTP44 min
Jun 22, 4:47 AM EDTFlash Flood WatchCTP23 hr
Jun 28, 1:55 PM EDTSpecial Weather StatementCTP35 min
Jun 28, 2:40 PM EDTSevere Thunderstorm WarningCTP22 min
Jul 13, 10:01 PM EDTSpecial Weather StatementCTP44 min
Jul 13, 10:46 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 18, 11:40 AM EDTMesoscale DiscussionSPC95 min
Jul 18, 1:42 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 18, 2:06 PM EDTSpecial Weather StatementCTP24 min
Jul 23, 2:34 PM EDTMesoscale DiscussionSPC2 hr
Jul 24, 2:26 PM EDTHeat AdvisoryCTP28 hr
Jul 24, 7:06 PM EDTSpecial Weather StatementCTP54 min
Jul 24, 8:05 PM EDTSpecial Weather StatementCTP55 min
Jul 25, 12:41 PM EDTMesoscale DiscussionSPC64 min
Jul 25, 12:43 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 25, 1:25 PM EDTSpecial Weather StatementCTP35 min
Jul 25, 3:03 PM EDTMesoscale DiscussionSPC57 min
Jul 25, 3:54 PM EDTSevere Thunderstorm WarningCTP56 min
Jul 25, 4:52 PM EDTMesoscale DiscussionSPC83 min
Jul 28, 1:27 PM EDTFlood WatchCTP8 hr
Jul 30, 2:35 PM EDTSevere Thunderstorm WarningCTP55 min
Jul 30, 3:30 PM EDTSpecial Weather StatementCTP45 min
Jul 30, 3:36 PM EDTSevere Thunderstorm WarningCTP39 min
Aug 1, 2:55 PM EDTMesoscale DiscussionSPC95 min
Aug 6, 12:54 PM EDTMesoscale DiscussionSPC3 hr
Aug 11, 12:38 PM EDTHeat AdvisoryCTP3 days
Aug 13, 3:17 PM EDTSpecial Weather StatementCTP43 min
Aug 13, 7:35 PM EDTSpecial Weather StatementCTP55 min
Aug 15, 1:58 PM EDTMesoscale DiscussionSPC92 min
Aug 15, 5:10 PM EDTSpecial Weather StatementCTP35 min
Aug 16, 1:33 PM EDTSpecial Weather StatementCTP42 min
Aug 16, 1:40 PM EDTMesoscale DiscussionSPC2 hr
Aug 16, 2:05 PM EDTSpecial Weather StatementCTP55 min
Sep 7, 3:06 PM EDTMesoscale DiscussionSPC2 hr
Sep 8, 7:17 PM EDTSpecial Weather StatementCTP28 min
Sep 9, 10:24 PM EDTSpecial Weather StatementCTP36 min
Sep 28, 7:47 AM EDTFlood WatchCTP35 hr
Oct 6, 2:04 AM EDTDense Fog AdvisoryCTP7 hr
Oct 10, 4:27 AM EDTFrost AdvisoryCTP29 hr
Oct 14, 2:35 PM EDTFrost AdvisoryCTP18 hr
Oct 24, 2:43 PM EDTFreeze WatchCTP13 hr
Oct 25, 3:37 AM EDTFreeze WarningCTP29 hr
Oct 30, 3:29 PM EDTSevere Thunderstorm WarningCTP76 min
Nov 19, 4:54 AM ESTWind AdvisoryCTP62 hr
Nov 29, 9:06 PM ESTDense Fog AdvisoryCTP10 hr
Dec 10, 2:20 PM ESTWinter Weather AdvisoryCTP43 hr
Dec 11, 10:05 PM ESTMesoscale DiscussionSPC4 hr
Dec 16, 3:39 AM ESTWinter Weather AdvisoryCTP44 hr
Dec 17, 3:08 AM ESTMesoscale DiscussionSPC4 hr
Dec 17, 9:31 PM ESTDense Fog AdvisoryCTP9 hr
Dec 17, 11:34 PM ESTSpecial Weather StatementCTP56 min
Dec 25, 2:06 PM ESTFreezing Rain AdvisoryCTP21 hr
Dec 28, 1:39 PM ESTWinter Weather AdvisoryCTP24 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 archive20152017

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.