Alert archive / Pennsylvania / Clearfield County

Weather alerts in Clearfield County, Pennsylvania, 2018

140 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clearfield County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
140
Warnings
24
Watches
18
Advisories
43
Busiest month
May20 alerts
Busiest day
October 2, 201813 alerts

Over time

By month

Warning verification

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

1 of 3 tornado warnings covering Clearfield County in 2018 had a tornado report inside them.

Clearfield County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3167%0
Severe thunderstorm warnings10820%580%28 min
Flash flood warnings110%4100%110 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings22577%1050%7 min
NWS State College, PA: severe thunderstorm warnings1228134%24480%30 min
NWS State College, PA: flash flood warnings573637%8988%96 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, 3:29 AM ESTWind Chill WatchCTP24 hr
Jan 4, 3:46 AM ESTWind Chill WarningCTP62 hr
Jan 4, 3:46 AM ESTWind Chill AdvisoryCTP3 days
Jan 7, 2:38 PM ESTWinter Weather AdvisoryCTP40 hr
Jan 10, 3:07 PM ESTWinter Storm WatchCTP38 hr
Jan 11, 4:34 AM ESTFlood WatchCTP51 hr
Jan 12, 4:46 AM ESTWinter Weather AdvisoryCTP29 hr
Jan 12, 4:58 PM ESTAreal Flood AdvisoryCTP3 hr
Jan 12, 7:04 PM ESTMesoscale DiscussionSPC6 hr
Jan 12, 7:24 PM ESTAreal Flood AdvisoryCTP3 hr
Jan 12, 8:24 PM ESTAreal Flood AdvisoryCTP4 hr
Jan 13, 1:21 PM ESTWind Chill AdvisoryCTP21 hr
Jan 18, 9:03 AM ESTSpecial Weather StatementCTP87 min
Jan 29, 4:32 AM ESTWinter Weather AdvisoryCTP38 hr
Feb 1, 5:25 PM ESTSpecial Weather StatementCTP50 min
Feb 1, 7:15 PM ESTSpecial Weather StatementCTP90 min
Feb 3, 2:44 PM ESTWinter Weather AdvisoryCTP42 hr
Feb 5, 2:40 PM ESTWinter Storm WatchCTP24 hr
Feb 6, 3:57 AM ESTWinter Weather AdvisoryCTP38 hr
Feb 6, 2:41 PM ESTWinter Storm WarningCTP27 hr
Feb 7, 5:28 AM ESTMesoscale DiscussionSPC5 hr
Feb 7, 11:25 AM ESTMesoscale DiscussionSPC6 hr
Feb 11, 12:01 AM ESTDense Fog AdvisoryCTP10 hr
Feb 13, 10:50 PM ESTSpecial Weather StatementCTP25 min
Feb 16, 1:27 AM ESTAreal Flood WarningCTP6 hr
Feb 16, 1:43 AM ESTAreal Flood AdvisoryCTP5 hr
Feb 16, 8:15 AM ESTAreal Flood AdvisoryCTP3 hr
Feb 21, 2:14 PM ESTWinter Weather AdvisoryCTP46 hr
Feb 22, 11:29 AM ESTFlood WatchCTP68 hr
Feb 25, 4:28 AM ESTAreal Flood AdvisoryCTP5 hr
Mar 1, 3:48 PM ESTWinter Weather AdvisoryCTP23 hr
Mar 1, 4:03 PM ESTWind AdvisoryCTP33 hr
Mar 6, 4:21 PM ESTWinter Weather AdvisoryCTP22 hr
Mar 8, 3:32 AM ESTWinter Weather AdvisoryCTP39 hr
Mar 13, 5:17 PM EDTSpecial Weather StatementCTP58 min
Mar 15, 11:37 AM EDTSpecial Weather StatementCTP53 min
Mar 15, 12:26 PM EDTSpecial Weather StatementCTP49 min
Mar 16, 1:20 AM EDTSpecial Weather StatementCTP55 min
Mar 20, 4:36 AM EDTWinter Weather AdvisoryCTP39 hr
Mar 27, 5:00 AM EDTWinter Weather AdvisoryCTP12 hr
Mar 29, 2:28 AM EDTDense Fog AdvisoryCTP8 hr
Mar 29, 8:43 PM EDTSpecial Weather StatementCTP17 min
Apr 1, 4:17 AM EDTWinter Weather AdvisoryCTP29 hr
Apr 3, 3:25 PM EDTWind AdvisoryCTP12 hr
Apr 3, 6:38 PM EDTMesoscale DiscussionSPC2 hr
Apr 4, 3:36 AM EDTHigh Wind WarningCTP16 hr
Apr 4, 1:37 PM EDTSpecial Weather StatementCTP53 min
Apr 5, 12:23 AM EDTSpecial Weather StatementCTP52 min
Apr 16, 1:45 PM EDTSpecial Weather StatementCTP45 min
Apr 17, 3:52 PM EDTSpecial Weather StatementCTP83 min
Apr 17, 5:12 PM EDTSpecial Weather StatementCTP63 min
Apr 27, 8:26 PM EDTSevere Thunderstorm WarningCTP34 min
May 2, 4:45 AM EDTRed Flag WarningCTP16 hr
May 3, 2:23 PM EDTSpecial Weather StatementCTP37 min
May 3, 4:57 PM EDTSpecial Weather StatementCTP33 min
May 4, 2:23 PM EDTMesoscale DiscussionSPC97 min
May 4, 2:44 PM EDTSevere Thunderstorm WatchSPC6 hr
May 4, 4:20 PM EDTMesoscale DiscussionSPC55 min
May 4, 5:22 PM EDTSevere Thunderstorm WarningCTP83 min
May 4, 6:49 PM EDTSpecial Weather StatementCTP26 min
May 7, 1:15 AM EDTDense Fog AdvisoryCTP8 hr
May 10, 2:24 PM EDTSpecial Weather StatementCTP81 min
May 15, 11:43 AM EDTMesoscale DiscussionSPC3 hr
May 15, 12:00 PM EDTSevere Thunderstorm WarningCTP75 min
May 15, 12:26 PM EDTSevere Thunderstorm WatchSPC7 hr
May 15, 12:58 PM EDTSevere Thunderstorm WarningCTP57 min
May 15, 1:42 PM EDTSevere Thunderstorm WarningCTP63 min
May 28, 2:16 PM EDTMesoscale DiscussionSPC2 hr
May 28, 4:40 PM EDTSpecial Weather StatementCTP35 min
May 31, 12:51 PM EDTSpecial Weather StatementCTP54 min
May 31, 2:10 PM EDTAreal Flood AdvisoryCTP110 min
May 31, 3:57 PM EDTAreal Flood AdvisoryCTP108 min
Jun 5, 3:05 PM EDTMesoscale DiscussionSPC2 hr
Jun 13, 6:10 PM EDTMesoscale DiscussionSPC95 min
Jun 13, 6:33 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 13, 8:43 PM EDTMesoscale DiscussionSPC62 min
Jun 18, 4:12 PM EDTSpecial Weather StatementCTP33 min
Jun 18, 10:19 PM EDTSevere Thunderstorm WarningCTP71 min
Jun 24, 2:51 PM EDTSpecial Weather StatementCTP54 min
Jun 27, 7:37 PM EDTMesoscale DiscussionSPC3 hr
Jun 27, 8:16 PM EDTSpecial Weather StatementCTP74 min
Jul 2, 1:03 PM EDTMesoscale DiscussionSPC72 min
Jul 4, 9:54 AM EDTFlash Flood WatchCTP10 hr
Jul 4, 1:23 PM EDTAreal Flood AdvisoryCTP3 hr
Jul 5, 4:17 AM EDTFlash Flood WatchCTP30 hr
Jul 30, 4:10 PM EDTAreal Flood AdvisoryCTP110 min
Aug 1, 4:06 AM EDTFlash Flood WatchCTP3 days
Aug 4, 2:59 AM EDTDense Fog AdvisoryCTP6 hr
Aug 11, 11:34 PM EDTAreal Flood AdvisoryCTP56 min
Aug 13, 5:19 PM EDTAreal Flood AdvisoryCTP3 hr
Aug 16, 5:21 PM EDTSpecial Weather StatementCTP39 min
Aug 21, 2:16 PM EDTMesoscale DiscussionSPC119 min
Aug 21, 2:41 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 21, 4:56 PM EDTMesoscale DiscussionSPC2 hr
Aug 27, 9:44 AM EDTSpecial Weather StatementCTP76 min
Sep 3, 5:49 PM EDTSpecial Weather StatementCTP41 min
Sep 6, 11:55 AM EDTSpecial Weather StatementCTP35 min
Sep 6, 1:20 PM EDTMesoscale DiscussionSPC2 hr
Sep 8, 3:33 AM EDTFlood WatchCTP64 hr
Sep 10, 2:41 AM EDTAreal Flood WarningCTP9 hr
Sep 10, 10:19 AM EDTAreal Flood WarningCTP9 hr
Sep 10, 9:19 PM EDTAreal Flood AdvisoryCTP3 hr
Sep 11, 12:13 AM EDTAreal Flood AdvisoryCTP3 hr
Sep 16, 7:11 AM EDTDense Fog AdvisoryCTP3 hr
Sep 17, 4:51 AM EDTFlash Flood WatchCTP31 hr
Sep 21, 4:50 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 21, 6:30 PM EDTSevere Thunderstorm WarningCTP60 min
Sep 21, 7:04 PM EDTMesoscale DiscussionSPC116 min
Sep 21, 8:37 PM EDTSpecial Weather StatementCTP38 min
Oct 2, 1:12 PM EDTFlash Flood WatchCTP9 hr
Oct 2, 2:26 PM EDTMesoscale DiscussionSPC2 hr
Oct 2, 2:55 PM EDTTornado WatchSPC8 hr
Oct 2, 4:26 PM EDTSevere Thunderstorm WarningCTP64 min
Oct 2, 4:42 PM EDTTornado WarningCTP63 min
Oct 2, 4:43 PM EDTMesoscale DiscussionSPC2 hr
Oct 2, 5:02 PM EDTTornado WarningCTP43 min
Oct 2, 5:27 PM EDTSevere Thunderstorm WarningCTP93 min
Oct 2, 5:32 PM EDTTornado WarningCTP58 min
Oct 2, 6:19 PM EDTAreal Flood AdvisoryCTP3 hr
Oct 2, 7:00 PM EDTSevere Thunderstorm WarningCTP90 min
Oct 2, 7:24 PM EDTMesoscale DiscussionSPC81 min
Oct 2, 7:59 PM EDTFlash Flood WarningCTP3 hr
Oct 2, 10:57 PM EDTAreal Flood WarningCTP6 hr
Oct 8, 3:30 AM EDTDense Fog AdvisoryCTP7 hr
Oct 13, 1:13 PM EDTFrost AdvisoryCTP19 hr
Nov 2, 3:12 AM EDTSpecial Weather StatementCTP33 min
Nov 2, 3:46 AM EDTSpecial Weather StatementCTP29 min
Nov 10, 5:37 AM ESTSpecial Weather StatementCTP113 min
Nov 10, 8:33 AM ESTSnow Squall WarningCTP42 min
Nov 14, 4:31 AM ESTWinter Storm WatchCTP11 hr
Nov 14, 3:40 PM ESTWinter Storm WarningCTP38 hr
Nov 15, 9:56 AM ESTMesoscale DiscussionSPC6 hr
Nov 15, 4:39 PM ESTMesoscale DiscussionSPC6 hr
Nov 16, 8:47 PM ESTWinter Weather AdvisoryCTP11 hr
Nov 21, 3:23 PM ESTSpecial Weather StatementCTP112 min
Nov 23, 11:02 AM ESTWinter Weather AdvisoryCTP27 hr
Nov 24, 10:08 AM ESTMesoscale DiscussionSPC5 hr
Nov 29, 1:26 PM ESTWinter Weather AdvisoryCTP24 hr
Dec 2, 7:37 PM ESTDense Fog AdvisoryCTP8 hr
Dec 3, 1:09 AM ESTDense Fog AdvisoryCTP3 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 archive20172019

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.