FloodZoneMap.org

Flash Flood — Montgomery, PA

Sep 16, 1999

Hurricane Floyd battered Eastern Pennsylvania (especially Southeast sections around Philadelphia) on September 16th and brought with it torrential and in some places record breaking rains and damaging winds. The hurricane caused widespread flash flooding as storm totals averaged around six inches in the Poconos and Berks County, eight inches in the Lehigh Valley and from eight to twelve inches in the Greater Philadelphia Metropolitan Area. Six people died directly from the hurricane - four dr

Source: NOAA National Weather Service Storm Events Database (event 5722750). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Montgomery, PA

This event is one of many recorded floods in Montgomery County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Montgomery County flood data →

More Flood Stories

Flash Flood2 deaths$20.0M damage

Montgomery, PA · Sep 1, 2021

Post Tropical Cyclone Ida brought heavy rain to eastern Pennsylvania on September 1. Rainfall totals were as high as 5 to 10 inches. The heavy rain caused significant flash flooding, mainly in the southeastern part of the state. It resulted in widespread property damage.

Read the full account →
Flash Flood2 deaths$20.0M damage

Montgomery, PA · Sep 8, 1996

Thunderstorms, which "trained" or moved over the same locations of Southern Montgomery County, caused widespread flash flooding, caused the death of a couple in Abington and about $20 million dollars in property damage. Up to 10 inches of rain within a three hour period.

Read the full account →
Flash Flood1 death$33.5M damage

Montgomery, PA · Jun 16, 2001

The remnants of tropical storm Allison drenched the southern halves of Montgomery and Bucks Counties and Philadelphia with up to 10 inches of rain. Torrential downpours occurred from early afternoon through the late evening on the 16th.

Read the full account →
Flash Flood1 death

Montgomery, PA · Aug 4, 2020

Tropical Storm Isaias brought high winds, heavy rain, several tornadoes, and coastal flooding to the mid-Atlantic region, becoming the most impactful tropical cyclone to impact most of the region since Sandy in 2012.

Read the full account →