A series of thunderstorms, preceding a slowing cold front, during the afternoon of the 26th moved across the Poconos. They not only produced severe weather, but also flash flooding in several municipalities across western Carbon and southeast Monroe County.  Many roadways and basements were flooded and this included at least one road washout.  Heavier rainfall amounts were two to three inches per hour and Doppler Radar storm total estimates reached between 6 and 7 inches in Hamilton Township (Monroe County).  The highest reported storm total was 7.40 inches in Lansdale in Carbon County.

Flash Flood in CARBON, PENNSYLVANIA
From 26-MAY-12 14:10:00 to 26-MAY-12 17:00:00 (EST-5)
Location: BLACK CREEK JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms with torrential downpours caused flash flooding of smaller streams as well as  poor drainage flooding in Nesquehoning Borough. The Wash Shanty Hill portion of U.S. Route 209 was closed because of significant water and debris runoff. Doppler Radar storm total estimates reached around 4 inches.

Flash Flood in MONROE, PENNSYLVANIA
From 26-MAY-12 15:45:00 to 26-MAY-12 18:00:00 (EST-5)
Location: POCONO MANOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorms with torrential downpours caused flash flooding of smaller streams in Pocono Township. Doppler Radar storm total estimates reached two inches within 45 minutes within the township.

Flash Flood in MONROE, PENNSYLVANIA
From 26-MAY-12 13:40:00 to 26-MAY-12 15:40:00 (EST-5)
Location: EAST STROUDSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms with torrential downpours caused poor drainage as well as small creek flash flooding in and around East Stroudsburg. Doppler Radar storm total estimates reached around 4.5 inches.

Flash Flood in MONROE, PENNSYLVANIA
From 26-MAY-12 14:20:00 to 26-MAY-12 18:30:00 (EST-5)
Location: BARTONSVILLE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms with torrential downpours hit Hamilton Township the hardest in Monroe County as Doppler Radar storm total estimates reached between 6 and 7 inches during the afternoon of the 26th.  Multiple roadways were flooded and included Pennsylvania State Route 33 between Syndersville and Interstate 80. The roadway was closed for nearly two hours and reopened at 620 p.m. EDT that evening. Beaver Valley Road between Turkey Hill Road and Haney Road was closed because it was undermined by a flooding creek. The combination of damaging winds, flooding rains and lightning caused about 2.000 Pennsylvania Power and Light and Metropolitan Edison customers to lose power.  The Pocono Creek near Brislin Road in Stroud Township crested at 10.99 feet. There is no established flood stage for the creek at that site. An event total of 3.23 inches was measured in Syndersville in Hamilton Township.

Flash Flood in CARBON, PENNSYLVANIA
From 26-MAY-12 14:55:00 to 26-MAY-12 18:00:00 (EST-5)
Location: HAUTO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms with torrential downpours caused flash flooding of smaller streams as well as extensive poor drainage flooding in Lansford and Summit Hill Boroughs and the northwest part of Mahoning Township. Roadways were closed and many basements were flooded. In Summit Hill, Pennsylvania State Route 902 was shut down for two and a half hours because of debris and rocks pushed onto the roadway. A portion of Oak Street was also closed. Firefighters responded to thirty-six calls of flooded basements. The annual Stay At Home Festival never opened because volunteers had to rebuild the stands and the field was swamped by flood waters. In Lansford, there was four feet of water on U.S. Route 209 and one motorist had to be rescued.  Other roadways in the borough were damaged by flooding as asphalt was washed away. A storm total measurement of 7.40 inches was measured in Lansford.