Alert archive / Pennsylvania / Lawrence County

Weather alerts in Lawrence County, Pennsylvania, 2010

148 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lawrence County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
148
Warnings
30
Watches
31
Advisories
25
Busiest month
June36 alerts
Busiest day
July 24, 20108 alerts

Over time

By month

Warning verification

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

Lawrence County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings211529%1182%22 min
Flash flood warnings2150%0

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Pittsburgh, PA: tornado warnings13192%425%4 min
NWS Pittsburgh, PA: severe thunderstorm warnings20412439%29082%26 min
NWS Pittsburgh, PA: flash flood warnings241538%2990%73 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 1, 2:11 PM ESTWinter Weather AdvisoryPBZ5 days
Jan 6, 8:56 AM ESTWinter Weather AdvisoryPBZ3 hr
Jan 6, 3:27 PM ESTWinter Weather AdvisoryPBZ67 hr
Jan 21, 2:31 PM ESTWinter Weather AdvisoryPBZ22 hr
Jan 24, 4:34 AM ESTFlood WatchPBZ38 hr
Jan 25, 7:44 AM ESTAreal Flood AdvisoryPBZ6 hr
Feb 3, 3:00 PM ESTWinter Storm WatchPBZ24 hr
Feb 4, 2:31 PM ESTWinter Storm WarningPBZ50 hr
Feb 7, 3:04 PM ESTWinter Storm WatchPBZ24 hr
Feb 8, 3:19 PM ESTWinter Storm WarningPBZ54 hr
Feb 14, 4:52 PM ESTWinter Weather AdvisoryPBZ4 days
Feb 15, 1:41 PM ESTMesoscale DiscussionSPC5 hr
Feb 18, 12:05 PM ESTWinter Weather AdvisoryPBZ4 hr
Feb 25, 2:54 AM ESTWinter Weather AdvisoryPBZ50 hr
Mar 10, 4:19 AM ESTFlood WatchPBZ4 days
Mar 13, 7:41 AM ESTRiver Flood WatchPBZ7 hr
Mar 22, 6:53 PM EDTMesoscale DiscussionSPC3 hr
Apr 3, 3:50 AM EDTFire Weather WatchPBZ12 hr
Apr 3, 10:18 AM EDTRed Flag WarningPBZ10 hr
Apr 7, 10:01 AM EDTRed Flag WarningPBZ9 hr
Apr 16, 12:44 PM EDTMesoscale DiscussionSPC2 hr
Apr 16, 1:28 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 16, 3:23 PM EDTSevere Thunderstorm WarningPBZ67 min
Apr 16, 4:34 PM EDTMesoscale DiscussionSPC86 min
Apr 25, 10:56 AM EDTMesoscale DiscussionSPC2 hr
Apr 25, 11:54 AM EDTSevere Thunderstorm WatchSPC6 hr
Apr 25, 2:26 PM EDTMesoscale DiscussionSPC94 min
May 7, 2:38 PM EDTWind AdvisoryPBZ30 hr
May 7, 7:25 PM EDTMesoscale DiscussionSPC95 min
May 7, 9:17 PM EDTMesoscale DiscussionSPC58 min
May 7, 9:31 PM EDTSevere Thunderstorm WatchSPC5 hr
May 7, 11:29 PM EDTSevere Thunderstorm WarningPBZ46 min
May 8, 12:32 AM EDTSevere Thunderstorm WarningPBZ43 min
May 8, 3:04 PM EDTFreeze WatchPBZ12 hr
May 9, 3:22 AM EDTFreeze WarningPBZ29 hr
May 14, 1:48 AM EDTMesoscale DiscussionSPC87 min
May 14, 3:48 AM EDTMesoscale DiscussionSPC87 min
May 14, 4:14 AM EDTSevere Thunderstorm WarningPBZ61 min
May 14, 5:14 AM EDTSevere Thunderstorm WarningPBZ61 min
May 23, 2:11 AM EDTDense Fog AdvisoryPBZ7 hr
May 28, 4:50 PM EDTSpecial Weather StatementPBZ25 min
May 28, 5:17 PM EDTSpecial Weather StatementPBZ43 min
May 31, 3:20 PM EDTFlash Flood WatchPBZ12 hr
May 31, 8:47 PM EDTAreal Flood AdvisoryPBZ3 hr
Jun 2, 1:09 PM EDTMesoscale DiscussionSPC66 min
Jun 2, 1:39 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 2, 4:14 PM EDTMesoscale DiscussionSPC91 min
Jun 2, 7:41 PM EDTSpecial Weather StatementPBZ34 min
Jun 2, 7:52 PM EDTSevere Thunderstorm WarningPBZ38 min
Jun 2, 8:21 PM EDTSpecial Weather StatementPBZ39 min
Jun 2, 8:47 PM EDTSpecial Weather StatementPBZ58 min
Jun 2, 8:47 PM EDTSevere Thunderstorm WarningPBZ43 min
Jun 2, 11:54 PM EDTAreal Flood WarningPBZ6 hr
Jun 4, 1:14 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 4, 3:45 PM EDTMesoscale DiscussionSPC60 min
Jun 5, 3:15 AM EDTFlash Flood WatchPBZ32 hr
Jun 5, 1:35 PM EDTMesoscale DiscussionSPC85 min
Jun 5, 2:08 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 5, 2:27 PM EDTSevere Thunderstorm WarningPBZ48 min
Jun 5, 3:13 PM EDTTornado WatchSPC4 hr
Jun 6, 2:03 AM EDTTornado WatchSPC7 hr
Jun 6, 3:38 AM EDTMesoscale DiscussionSPC2 hr
Jun 6, 7:05 AM EDTMesoscale DiscussionSPC115 min
Jun 6, 7:51 AM EDTTornado WatchSPC7 hr
Jun 16, 1:39 PM EDTMesoscale DiscussionSPC96 min
Jun 19, 3:59 PM EDTSpecial Weather StatementPBZ31 min
Jun 19, 6:04 PM EDTMesoscale DiscussionSPC56 min
Jun 22, 4:25 AM EDTSevere Thunderstorm WatchSPC4 hr
Jun 22, 6:49 AM EDTSpecial Weather StatementPBZ56 min
Jun 23, 11:52 AM EDTMesoscale DiscussionSPC53 min
Jun 23, 1:37 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 23, 3:13 PM EDTMesoscale DiscussionSPC92 min
Jun 23, 4:46 PM EDTSpecial Weather StatementPBZ59 min
Jun 23, 5:29 PM EDTSevere Thunderstorm WarningPBZ61 min
Jun 27, 3:49 PM EDTMesoscale DiscussionSPC116 min
Jun 27, 4:19 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 27, 4:51 PM EDTSpecial Weather StatementPBZ54 min
Jun 27, 8:12 PM EDTMesoscale DiscussionSPC93 min
Jun 28, 5:05 PM EDTSpecial Weather StatementPBZ55 min
Jul 17, 7:33 PM EDTSevere Thunderstorm WarningPBZ27 min
Jul 17, 7:41 PM EDTSevere Thunderstorm WarningPBZ34 min
Jul 17, 8:07 PM EDTFlash Flood WarningPBZ2 hr
Jul 17, 8:37 PM EDTSevere Thunderstorm WarningPBZ53 min
Jul 18, 7:29 PM EDTMesoscale DiscussionSPC91 min
Jul 20, 2:20 PM EDTSpecial Weather StatementPBZ55 min
Jul 21, 2:45 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 23, 3:30 AM EDTHeat AdvisoryPBZ40 hr
Jul 23, 12:46 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 6:12 PM EDTSpecial Weather StatementPBZ48 min
Jul 23, 7:00 PM EDTMesoscale DiscussionSPC60 min
Jul 23, 7:19 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 23, 10:34 PM EDTSevere Thunderstorm WarningPBZ56 min
Jul 23, 10:45 PM EDTMesoscale DiscussionSPC90 min
Jul 24, 12:07 AM EDTSevere Thunderstorm WarningPBZ53 min
Jul 24, 12:36 AM EDTAreal Flood AdvisoryPBZ3 hr
Jul 24, 5:34 PM EDTMesoscale DiscussionSPC86 min
Jul 24, 6:10 PM EDTSevere Thunderstorm WatchSPC4 hr
Jul 24, 7:12 PM EDTSevere Thunderstorm WarningPBZ63 min
Jul 24, 7:56 PM EDTSevere Thunderstorm WarningPBZ64 min
Jul 24, 8:11 PM EDTSevere Thunderstorm WarningPBZ64 min
Jul 24, 9:01 PM EDTAreal Flood AdvisoryPBZ3 hr
Jul 24, 9:36 PM EDTMesoscale DiscussionSPC54 min
Aug 4, 3:22 PM EDTSevere Thunderstorm WarningPBZ53 min
Aug 4, 10:08 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 4, 11:52 PM EDTMesoscale DiscussionSPC113 min
Aug 5, 7:38 PM EDTMesoscale DiscussionSPC2 hr
Aug 11, 11:54 PM EDTSpecial Weather StatementPBZ66 min
Aug 12, 1:14 AM EDTSpecial Weather StatementPBZ61 min
Aug 12, 1:35 AM EDTAreal Flood AdvisoryPBZ6 hr
Aug 14, 1:15 PM EDTMesoscale DiscussionSPC2 hr
Aug 14, 7:31 PM EDTAreal Flood AdvisoryPBZ3 hr
Aug 14, 8:10 PM EDTFlash Flood WarningPBZ4 hr
Sep 7, 8:30 PM EDTSpecial Weather StatementPBZ45 min
Sep 7, 8:34 PM EDTSevere Thunderstorm WarningPBZ26 min
Sep 16, 4:29 PM EDTMesoscale DiscussionSPC91 min
Sep 16, 5:02 PM EDTSevere Thunderstorm WatchSPC3 hr
Sep 16, 6:04 PM EDTMesoscale DiscussionSPC56 min
Sep 16, 6:33 PM EDTSevere Thunderstorm WarningPBZ42 min
Sep 22, 2:34 PM EDTSevere Thunderstorm WatchSPC6 hr
Oct 11, 3:19 PM EDTMesoscale DiscussionSPC56 min
Oct 12, 3:04 AM EDTFrost AdvisoryPBZ30 hr
Oct 16, 6:34 PM EDTFrost AdvisoryPBZ8 hr
Oct 19, 2:17 PM EDTFrost AdvisoryPBZ19 hr
Oct 26, 3:40 AM EDTWind AdvisoryPBZ15 hr
Oct 26, 1:09 PM EDTMesoscale DiscussionSPC66 min
Oct 26, 1:36 PM EDTTornado WatchSPC7 hr
Oct 26, 4:34 PM EDTSevere Thunderstorm WarningPBZ56 min
Oct 26, 5:45 PM EDTMesoscale DiscussionSPC90 min
Nov 17, 12:09 AM ESTSpecial Weather StatementPBZ51 min
Nov 17, 1:10 AM ESTSpecial Weather StatementPBZ110 min
Nov 29, 1:09 PM ESTFlood WatchPBZ39 hr
Nov 29, 1:09 PM ESTWind AdvisoryPBZ32 hr
Nov 30, 11:26 PM ESTAreal Flood AdvisoryPBZ6 hr
Dec 1, 2:04 AM ESTAreal Flood WarningPBZ11 hr
Dec 5, 3:14 AM ESTWinter Weather AdvisoryPBZ64 hr
Dec 10, 2:34 PM ESTWinter Storm WatchPBZ38 hr
Dec 12, 3:43 AM ESTWinter Weather AdvisoryPBZ63 hr
Dec 13, 9:38 AM ESTSpecial Weather StatementPBZ52 min
Dec 13, 10:30 AM ESTSpecial Weather StatementPBZ45 min
Dec 13, 11:16 AM ESTSpecial Weather StatementPBZ59 min
Dec 13, 7:11 PM ESTSpecial Weather StatementPBZ109 min
Dec 13, 8:57 PM ESTSpecial Weather StatementPBZ108 min
Dec 14, 8:33 AM ESTSpecial Weather StatementPBZ57 min
Dec 14, 9:55 AM ESTSpecial Weather StatementPBZ80 min
Dec 14, 11:01 AM ESTSpecial Weather StatementPBZ89 min
Dec 14, 12:09 PM ESTSpecial Weather StatementPBZ81 min
Dec 14, 1:04 PM ESTSpecial Weather StatementPBZ86 min
Dec 29, 10:30 PM ESTFreezing Rain AdvisoryPBZ13 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 archive20092011

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.