2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
A strong low pressure system moved across the Upper Ohio Valley bringing heavy rain as well as a line of severe thunderstorms. Flooding of streams and creeks was widespread across eastern Ohio and western Pennsylvania.
Read the full account →Deep moisture combined with an approaching cold front and a favorable position of the jet stream triggered numerous heavy rain producing thunderstorms over northeastern Pennsylvania.
Read the full account →Deep moisture combined with an approaching cold front and a favorable position of the jet stream triggered numerous heavy rain producing thunderstorms over northeastern Pennsylvania.
Read the full account →Deep moisture combined with an approaching cold front and a favorable position of the jet stream triggered numerous heavy rain producing thunderstorms over northeastern Pennsylvania.
Read the full account →Deep moisture combined with an approaching cold front and a favorable position of the jet stream triggered numerous heavy rain producing thunderstorms over northeastern Pennsylvania.
Read the full account →Deep moisture combined with an approaching cold front and a favorable position of the jet stream triggered numerous heavy rain producing thunderstorms over northeastern Pennsylvania.
Read the full account →Widespread severe thunderstorms formed during the afternoon and evening within an environment of moderate CAPE and moderate shear. A shortwave moved across the Ohio Valley giving support for multiple rounds of convection, primarily in the form of multicell clusters and linear…
Read the full account →Widespread severe thunderstorms formed during the afternoon and evening within an environment of moderate CAPE and moderate shear. A shortwave moved across the Ohio Valley giving support for multiple rounds of convection, primarily in the form of multicell clusters and linear…
Read the full account →The Connoquenessing Creek went out of its banks after widespread rainfall of 1.00 to 1.75 inches of rain fell across the watershed, mainly in Butler County on March 19th.
Read the full account →A broken line of thunderstorms moved across this area of the Ohio Valley just ahead of an approaching cold front. While thunderstorms were generally moving fast enough to avoid flooding issues, some locations received multiple rounds of heavy rainfall as multiple convective…
Read the full account →Strong thunderstorms passed over areas of western Pennsylvania that had already received several inches of rain over the past few days. These thunderstorms produced torrential rainfall of up to 3 inches in 90 minutes as they moved across the area, creating flash flooding…
Read the full account →The combination of a deep, slow moving upper-level trough across the West Coast and a cold high pressure over the Midwest created the perfect setup for a Winter Storm/Ice Storm/flooding scenario in portions of the Ohio River Valley.
Read the full account →The combination of a deep, slow moving upper-level trough across the West Coast and a cold high pressure over the Midwest created the perfect setup for a Winter Storm/Ice Storm/flooding scenario in portions of the Ohio River Valley.
Read the full account →The combination of a deep, slow moving upper-level trough across the West Coast and a cold high pressure over the Midwest created the perfect setup for a Winter Storm/Ice Storm/flooding scenario in portions of the Ohio River Valley.
Read the full account →A slow moving thunderstorm brought flash flooding to a small portion of Fulton County on the afternoon of August 21st. Several roads reported high water and debris.||In Cambria County, road flooding occurred in East Taylor, Summerhill, and Middle Taylor.
Read the full account →A slow moving thunderstorm brought flash flooding to a small portion of Fulton County on the afternoon of August 21st. Several roads reported high water and debris.||In Cambria County, road flooding occurred in East Taylor, Summerhill, and Middle Taylor.
Read the full account →A slow moving thunderstorm brought flash flooding to a small portion of Fulton County on the afternoon of August 21st. Several roads reported high water and debris.||In Cambria County, road flooding occurred in East Taylor, Summerhill, and Middle Taylor.
Read the full account →A shortwave moving across the region in the afternoon helped to produce showers and thunderstorms, some of which became severe. In addition weak upper level flow allowed for several storms to produce heavy rainfall.
Read the full account →Isolated severe thunderstorms developed in the afternoon as a cold front began to sag across the region on the 3rd. The weak front then stalled along the Mason-Dixon line. As an upper level short wave progressed across the front on July 4th, additional thunderstorms developed.
Read the full account →Thunderstorms developed ahead of a cold front advancing eastward through the Ohio Valley. The storms produced isolated wind damage and several areas of locally heavy rainfall from the late afternoon hours through the overnight period.
Read the full account →A slow-moving upper level low pressure system brought unsettled weather to the region. |An extensive plume of Atlantic moisture into the system brought periods of heavy rain.
Read the full account →Numerous severe thunderstorms developed ahead of a strong cold front moving across the Ohio Valley, producing large hail and wind damage across eastern Ohio, western Pennsylvania, northern West Virginia, and Garrett county Maryland.
Read the full account →Three separate mesoscale convective systems moved across Southeast Ohio, Western Pennsylvania, Northern West Virginia, and Garrett county Maryland. Widespread wind damage, flash flooding, and an EF0 tornado occurred during the event.
Read the full account →On August 28th, a weak crossing surface low and an advancing upper trough helped to create additional thunderstorms, which were also aided by deep tropical moisture from the remnants of Hurricane Laura. Two waves of thunderstorms occurred on this day.
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