National Weather ServicePennsylvaniaCoastal Flood AdvisoryArchive to October 1, 2026
Coastal Flood Advisories in Pennsylvania
The National Weather Service issued 12 coastal flood advisories for Pennsylvania in 2025 and 13 a year on average in 2008-2025; in 2021-2025 it had the 17th most of any state. 2026 through September: 3, 69% below the average of 10 for those months in 2008-2025. Philadelphia was covered most often (232 times since 2008).
How many coastal flood advisories does Pennsylvania get?
Every coastal flood advisory that covered part of Pennsylvania. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 3 |
| 2025 | 12 |
| 2024 | 28 |
| 2023 | 16 |
| 2022 | 8 |
| 2021 | 6 |
| 2020 | 14 |
| 2019 | 19 |
| 2018 | 24 |
| 2017 | 0 |
| 2016 | 7 |
| 2015 | 5 |
| 2014 | 6 |
| 2013 | 4 |
| 2012 | 13 |
| 2011 | 37 |
| 2010 | 14 |
| 2009 | 14 |
| 2008 | 5 |
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 |
|---|---|---|---|
| Philadelphia | 232 | 56 | September 24, 2026 |
| Delaware | 230 | 54 | September 24, 2026 |
| Lower Bucks | 135 | 61 | September 24, 2026 |
| Bucks | 11 | 0 | October 30, 2012 |
| Eastern Montgomery | 4 | 4 | April 19, 2026 |
| Montgomery | 1 | 0 | July 15, 2011 |
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.
What is a coastal flood advisory?
A coastal flood advisory covers minor coastal flooding at high tide, such as water on shore roads and low parking lots. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Pennsylvania.