Alert archive / Pennsylvania / Indiana County

Weather alerts in Indiana County, Pennsylvania, 2017

100 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Indiana County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
100
Warnings
38
Watches
8
Advisories
8
Busiest month
August24 alerts
Busiest day
August 19, 20178 alerts

Over time

By month

Warning verification

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

Indiana County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings28267%1493%23 min
Flash flood warnings7614%16100%94 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Pittsburgh, PA: tornado warnings14843%1867%11 min
NWS Pittsburgh, PA: severe thunderstorm warnings22518617%51888%21 min
NWS Pittsburgh, PA: flash flood warnings766416%26896%112 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 8, 2:21 PM ESTSpecial Weather StatementPBZ39 min
Jan 12, 2:22 PM ESTMesoscale DiscussionSPC2 hr
Jan 12, 3:20 PM ESTSpecial Weather StatementPBZ70 min
Jan 29, 6:54 AM ESTSpecial Weather StatementPBZ81 min
Jan 30, 12:06 PM ESTSpecial Weather StatementPBZ114 min
Feb 8, 9:40 PM ESTMesoscale DiscussionSPC4 hr
Feb 12, 7:02 PM ESTSevere Thunderstorm WarningPBZ58 min
Feb 12, 7:59 PM ESTSevere Thunderstorm WarningPBZ61 min
Feb 12, 10:20 PM ESTSpecial Weather StatementPBZ40 min
Feb 12, 11:43 PM ESTSpecial Weather StatementPBZ62 min
Mar 1, 2:19 AM ESTMesoscale DiscussionSPC86 min
Mar 1, 11:36 AM ESTAreal Flood AdvisoryPBZ3 hr
Mar 3, 2:26 AM ESTSpecial Weather StatementPBZ2 hr
Mar 3, 11:11 AM ESTSpecial Weather StatementPBZ79 min
Mar 3, 12:27 PM ESTSpecial Weather StatementPBZ63 min
Apr 16, 2:15 PM EDTMesoscale DiscussionSPC3 hr
Apr 16, 5:42 PM EDTSevere Thunderstorm WarningPBZ35 min
Apr 20, 2:40 PM EDTMesoscale DiscussionSPC65 min
Apr 20, 3:04 PM EDTSevere Thunderstorm WarningPBZ41 min
Apr 30, 2:58 PM EDTMesoscale DiscussionSPC2 hr
May 1, 11:59 AM EDTMesoscale DiscussionSPC2 hr
May 1, 12:32 PM EDTTornado WatchSPC4 hr
May 1, 2:47 PM EDTSevere Thunderstorm WarningPBZ58 min
May 1, 3:34 PM EDTSevere Thunderstorm WarningPBZ56 min
May 18, 4:35 PM EDTMesoscale DiscussionSPC85 min
May 29, 3:08 AM EDTAreal Flood WarningPBZ9 hr
May 30, 12:03 PM EDTMesoscale DiscussionSPC2 hr
May 30, 12:39 PM EDTSevere Thunderstorm WatchSPC6 hr
May 30, 1:25 PM EDTSevere Thunderstorm WarningPBZ50 min
May 30, 1:27 PM EDTSevere Thunderstorm WarningPBZ25 min
May 30, 2:17 PM EDTSevere Thunderstorm WarningPBZ31 min
May 31, 4:06 PM EDTSevere Thunderstorm WarningPBZ39 min
Jun 13, 4:42 PM EDTSevere Thunderstorm WarningPBZ48 min
Jun 15, 4:01 PM EDTMesoscale DiscussionSPC119 min
Jun 15, 5:22 PM EDTSevere Thunderstorm WarningPBZ38 min
Jun 15, 5:50 PM EDTSpecial Weather StatementPBZ10 min
Jun 16, 3:17 PM EDTSevere Thunderstorm WarningPBZ28 min
Jun 16, 4:07 PM EDTAreal Flood AdvisoryPBZ3 hr
Jun 18, 12:31 PM EDTMesoscale DiscussionSPC119 min
Jun 18, 1:37 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 19, 8:17 PM EDTSpecial Weather StatementPBZ58 min
Jun 21, 2:38 PM EDTMesoscale DiscussionSPC3 hr
Jun 22, 1:18 PM EDTMesoscale DiscussionSPC2 hr
Jun 22, 2:51 PM EDTSpecial Weather StatementPBZ24 min
Jun 22, 2:55 PM EDTSevere Thunderstorm WarningPBZ35 min
Jun 22, 3:49 PM EDTAreal Flood AdvisoryPBZ3 hr
Jun 22, 4:36 PM EDTAreal Flood AdvisoryPBZ3 hr
Jun 22, 4:53 PM EDTFlash Flood WarningPBZ10 hr
Jun 22, 5:52 PM EDTFlash Flood WarningPBZ9 hr
Jun 23, 2:59 AM EDTAreal Flood WarningPBZ24 hr
Jun 23, 2:20 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 23, 4:04 PM EDTFlash Flood Warning EmergencyPBZ6 hr
Jun 30, 3:05 PM EDTSpecial Weather StatementPBZ25 min
Jul 1, 10:59 AM EDTSpecial Weather StatementPBZ46 min
Jul 14, 1:42 AM EDTAreal Flood AdvisoryPBZ3 hr
Jul 14, 2:30 AM EDTFlash Flood WarningPBZ3 hr
Jul 14, 2:52 AM EDTFlash Flood WarningPBZ6 hr
Jul 14, 10:38 AM EDTAreal Flood AdvisoryPBZ112 min
Jul 20, 3:50 PM EDTMesoscale DiscussionSPC2 hr
Jul 20, 5:37 PM EDTSpecial Weather StatementPBZ23 min
Jul 24, 2:17 PM EDTMesoscale DiscussionSPC118 min
Jul 28, 2:29 PM EDTFlash Flood WarningPBZ4 hr
Jul 28, 11:51 PM EDTFlash Flood WarningPBZ8 hr
Jul 29, 7:40 AM EDTAreal Flood WarningPBZ6 hr
Aug 4, 11:38 AM EDTMesoscale DiscussionSPC2 hr
Aug 4, 1:25 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 4, 2:56 PM EDTSevere Thunderstorm WarningPBZ34 min
Aug 4, 3:46 PM EDTMesoscale DiscussionSPC119 min
Aug 4, 4:00 PM EDTSpecial Weather StatementPBZ30 min
Aug 4, 7:41 PM EDTMesoscale DiscussionSPC2 hr
Aug 19, 2:13 PM EDTMesoscale DiscussionSPC3 hr
Aug 19, 2:45 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 19, 4:36 PM EDTSevere Thunderstorm WarningPBZ39 min
Aug 19, 4:43 PM EDTSevere Thunderstorm WarningPBZ32 min
Aug 19, 4:43 PM EDTMesoscale DiscussionSPC2 hr
Aug 19, 4:46 PM EDTSevere Thunderstorm WarningPBZ44 min
Aug 19, 5:04 PM EDTSevere Thunderstorm WarningPBZ28 min
Aug 19, 5:34 PM EDTSevere Thunderstorm WarningPBZ24 min
Aug 21, 3:14 PM EDTSpecial Weather StatementPBZ31 min
Aug 21, 3:30 PM EDTSevere Thunderstorm WarningPBZ33 min
Aug 22, 11:54 AM EDTMesoscale DiscussionSPC66 min
Aug 22, 12:39 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 22, 2:02 PM EDTSevere Thunderstorm WarningPBZ43 min
Aug 22, 2:36 PM EDTSevere Thunderstorm WarningPBZ39 min
Aug 22, 2:37 PM EDTSevere Thunderstorm WarningPBZ38 min
Aug 22, 2:44 PM EDTMesoscale DiscussionSPC91 min
Aug 22, 3:54 PM EDTSevere Thunderstorm WarningPBZ36 min
Aug 22, 4:39 PM EDTMesoscale DiscussionSPC66 min
Sep 13, 11:48 PM EDTAreal Flood AdvisoryPBZ3 hr
Oct 15, 3:03 PM EDTMesoscale DiscussionSPC57 min
Nov 5, 5:28 PM ESTSevere Thunderstorm WatchSPC5 hr
Nov 5, 7:06 PM ESTMesoscale DiscussionSPC84 min
Nov 5, 7:37 PM ESTSevere Thunderstorm WarningPBZ53 min
Nov 5, 8:13 PM ESTSevere Thunderstorm WarningPBZ47 min
Nov 5, 8:25 PM ESTSevere Thunderstorm WarningPBZ38 min
Nov 6, 5:04 AM ESTAreal Flood AdvisoryPBZ3 hr
Nov 19, 12:19 AM ESTSpecial Weather StatementPBZ56 min
Dec 12, 7:29 AM ESTSpecial Weather StatementPBZ61 min
Dec 25, 1:16 AM ESTSpecial Weather StatementPBZ59 min
Dec 30, 5:14 PM ESTSpecial Weather StatementPBZ31 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 archive20162018

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.