67
Recorded events
3
Direct deaths
0
Direct injuries
$24.9M
Property damage
Flood in Montgomery County, Pennsylvania: 67 recorded events between 1997 and 2024. The strongest on record measured 0. That places the county #152 nationally and #4 statewide for this hazard.
Decade by decade
Flood in Montgomery County, Pennsylvania: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flood in Montgomery County is the 2010s, when 38 of the county's 67 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Montgomery County archive, flood makes up 6.0% of all recorded severe weather across 8 hazard types. Nationally the county sits at #152 for this hazard and #4 within Pennsylvania, putting it in the 94.8 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flood in Montgomery County with 11 recorded events, while Jul is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Aug 28, 2011 | POTTSTOWN | 0 | 1 | 0 | $100K |
| Oct 1, 2010 | STOWE | 0 | 1 | 0 | $750K |
| Sep 2, 2006 | SCHWENKSVILLE | 0 | 1 | 0 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jan 10, 2024 | POTTSTOWN | 0 | $0 |
| Dec 28, 2023 | ARCOLA | 0 | $0 |
| Dec 28, 2023 | IVY ROCK | 0 | $0 |
| Dec 18, 2023 | BALA CYNWYD | 0 | $0 |
| Dec 18, 2023 | WOXALL | 0 | $0 |
| Jun 11, 2018 | STOWE | 0 | $0 |
| Feb 12, 2018 | SCHWENKSVILLE ARPT | 0 | $0 |
| Feb 11, 2018 | SKIPPACK | 0 | $0 |
| Aug 23, 2017 | NIANTIC | 0 | $0 |
| Aug 5, 2017 | PENCOYD STATION | 0 | $0 |
Other hazards here
More from Montgomery County
- Thunderstorm Wind 623
- Flash Flood 192
- Hail 132
- Lightning 48
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Run-off from the heavy rain the fell early on the 27th continued to cause flooding in parts of the Perkiomen River Valley into the afternoon of the 27th. |The East Branch of the Perkiomen Creek at Schwenksville was above its 7 foot flood stage from 544 a.m. EDT through 1152 a.m. EDT on the 27th. It crested at 8.31 feet at 930 a.m. EDT.|Storm totals included 3.70 inches in Graterford, 3.00 inches in Lansdale and 2.01 inches in Pottstown.
For the third time this month, runoff from heavy rain that fell on the 28th caused minor flooding in the headwaters of the Perkiomen Creek around the Green Lane Reservoir. The Main Stem of the Perkiomen Creek at East Greenville was above its 4.0 foot flood stage from 903 p.m. EDT on the 28th through 150 a.m. EDT on the 29th. It crested at 5.0 feet at 1145 p.m. EDT on the 28th. The West Branch of the Perkiomen Creek at Hillegass was above its 5.0 foot flood stage from 631 p.m. EDT through 1006 p.m. EDT on the 28th. It crested at 5.31 feet at 830 p.m. EDT on the 28th. Event precipitation totals included 3.53 inches in Pottstown, 2.43 inches in Gilbertsville and 1.71 inches in Green Lane.
The East Branch of the Perkiomen Creek at Schwenksville was above its 7 foot flood stage from 7 a.m. EDT through 1007 a.m. EDT on the 7th. It crested at 7.27 feet at 830 a.m. EDT. Runoff from the heavy rain that fell earlier that morning in upper Bucks County and central Montgomery County caused the flooding. Storm totals included 2.03 inches in Perkasie (Bucks County), 1.91 inches in Hatfield (Montgomery County) and 1.26 inches in Green Lane (Montgomery County).
Quick answers
Frequently asked
How many flood events are on record in Montgomery County, Pennsylvania?
67 flood events are recorded in Montgomery County between 1997 and 2024, causing 3 direct deaths.
What is the strongest flood recorded in Montgomery County?
The strongest flood on record in Montgomery County measured 0.
Where does the flood data for Montgomery County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flood in Montgomery County, Pennsylvania.” Severe Weather History. severeweatherhistory.com/county/pennsylvania/montgomery-county/flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.