National Weather ServicePennsylvaniaTornado WarningArchive to October 1, 2026
Tornado Warnings in Pennsylvania
The National Weather Service issued 47 tornado warnings for Pennsylvania in 2025 and 39 a year on average in 2008-2025; in 2021-2025 it had the 24th most of any state. 2026 through September: 100, 183% above the average of 35 for those months in 2008-2025. Wayne was covered most often (42 times since 2008).
How many tornado warnings does Pennsylvania get?
Every tornado warning that covered part of Pennsylvania. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 100 |
| 2025 | 47 |
| 2024 | 51 |
| 2023 | 51 |
| 2022 | 19 |
| 2021 | 65 |
| 2020 | 27 |
| 2019 | 68 |
| 2018 | 61 |
| 2017 | 38 |
| 2016 | 18 |
| 2015 | 29 |
| 2014 | 31 |
| 2013 | 17 |
| 2012 | 25 |
| 2011 | 67 |
| 2010 | 44 |
| 2009 | 32 |
| 2008 | 12 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Pennsylvania get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Pennsylvania?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Wayne | 42 | 10 | July 21, 2026 |
| Bucks | 41 | 4 | July 8, 2025 |
| Chester | 41 | 16 | August 20, 2026 |
| Washington | 38 | 21 | August 2, 2026 |
| Westmoreland | 37 | 23 | September 3, 2026 |
| Crawford | 35 | 9 | September 3, 2026 |
| Montgomery | 35 | 11 | June 22, 2026 |
| Greene | 33 | 12 | March 11, 2026 |
| York | 33 | 4 | June 15, 2026 |
| Lancaster | 32 | 7 | August 28, 2026 |
| Susquehanna | 31 | 5 | August 9, 2024 |
| Butler | 30 | 5 | August 16, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest tornado warnings for Pennsylvania in AreaZine's record
NWS State CollegeWarningSeptember 9, 2026
Tornado Warning: Cameron, McKean and Potter, PA
Expired 9:30 p.m. EDT, September 9, 2026
NWS State CollegeWarningSeptember 9, 2026
Tornado Warning: Potter, PA
Expired 8:45 p.m. EDT, September 9, 2026
NWS State CollegeWarningSeptember 3, 2026
Tornado Warning: Bedford, Blair and Cambria, PA
Expired 8:30 p.m. EDT, September 3, 2026
NWS State CollegeWarningSeptember 2, 2026
Tornado Warning: Centre and Clinton, PA
Expired 9:15 p.m. EDT, September 2, 2026
NWS State CollegeWarningSeptember 2, 2026
Tornado Warning: Tioga, PA
Expired 8:30 p.m. EDT, September 2, 2026
NWS State CollegeWarningSeptember 2, 2026
Tornado Warning: Elk and McKean, PA
Expired 9:15 a.m. EDT, September 2, 2026
NWS State CollegeWarningSeptember 1, 2026
Tornado Warning: Sullivan, PA
Expired 8:00 p.m. EDT, September 1, 2026
NWS BinghamtonWarningSeptember 1, 2026
Tornado Warning: Bradford, PA
Expired 7:00 p.m. EDT, September 1, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a tornado warning?
The NWS issues a tornado warning when a tornado has been seen or weather radar indicates one in the warned area. Warnings are drawn as polygons around the storm's path and usually last 30 to 60 minutes. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Pennsylvania.