Alert archive / Pennsylvania

Weather alerts in Wyoming County, Pennsylvania

2,771 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Wyoming County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
2,771
Warnings
670
Watches
537
Advisories
573
Busiest year
2011230 alerts
Average year
73over 38 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

Warning verification

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

From 2008 to 2025, 33% of tornado reports in Wyoming County fell inside a tornado warning issued on average 28 minutes before, and 75% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2009020%
201110100%0
201210100%0
2014110%0
201610100%0
201710100%0
20196267%1100%28 min
202310100%0

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200815753%0
200910460%4100%25 min
2010141029%1100%33 min
2011251828%7100%19 min
201213838%3100%18 min
201314936%4100%20 min
201414564%540%24 min
20153167%0
20163233%1100%22 min
201716756%3100%50 min
201810460%10%
2019181611%13100%26 min
202010550%1164%17 min
2021332233%1688%19 min
202214140%875%14 min
2023221341%683%7 min
202417665%250%61 min
20258538%4100%28 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008110%0
20095260%1100%90 min
20108538%367%101 min
2011281450%1080%101 min
20134250%0
201710100%0
20189722%250%58 min
201910100%250%28 min
2020330%3100%57 min
20215260%0
202210100%0
20235420%4100%199 min
20246350%5100%112 min
20255340%0

Years from 2008, the first full year of storm-based warnings. The year still running is on its own page.

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.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Sep 3, 7:47 PM EDTSevere Thunderstorm WarningBGM43 min
Sep 2, 10:26 PM EDTSevere Thunderstorm WarningBGM64 min
Sep 2, 9:59 PM EDTSevere Thunderstorm WarningBGM46 min
Sep 1, 7:14 PM EDTSevere Thunderstorm WarningBGM61 min
Sep 1, 5:53 PM EDTSevere Thunderstorm WarningBGM67 min
Aug 12, 8:07 PM EDTSevere Thunderstorm WarningBGM53 min
Jul 5, 8:46 PM EDTFlash Flood WarningBGM5 hr
Jul 5, 7:10 PM EDTFlash Flood WarningBGM3 hr
Jul 4, 5:37 PM EDTFlash Flood WarningBGM117 min
Jul 4, 5:13 PM EDTSevere Thunderstorm WarningBGM62 min
Jul 4, 4:15 PM EDTSevere Thunderstorm WarningBGM60 min
Jul 3, 5:22 PM EDTSevere Thunderstorm WarningBGM68 min

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.