2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
A powerful cold front and upper level trough pushed across the Upper Ohio Valley on July 10th producing widespread severe weather and flash flooding from eastern Ohio, northern West Virginia, and western Pennsylvania. This included 3 separate tornadoes.
Read the full account →A powerful cold front and upper level trough pushed across the Upper Ohio Valley on July 10th producing widespread severe weather and flash flooding from eastern Ohio, northern West Virginia, and western Pennsylvania. This included 3 separate tornadoes.
Read the full account →A powerful cold front and upper level trough pushed across the Upper Ohio Valley on July 10th producing widespread severe weather and flash flooding from eastern Ohio, northern West Virginia, and western Pennsylvania. This included 3 separate tornadoes.
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 →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 →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 →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 →An upper level disturbance and weak, nearly stalled frontal boundary helped to produce scattered showers and thunderstorms during the heating the afternoon and early evening. Some of the storms became severe, producing large hail and damaging wind gusts.
Read the full account →A strong Atlantic coast storm brought heavy rain with amounts between 1 and 3 inches on the 28th. A few locations had over 3 inches. In addition, snowmelt was causing elevated river flows before the rain started late on the 27th.
Read the full account →Strong to severe convective development shifted east of the Lake Erie region into northwest Pennsylvania, within a zone of broader vertical ascent extending downstream from an upper level wave migrating into the Great Lakes region.
Read the full account →Ice began to build up on the Allegheny Rivers and its tributaries since January 11th. Below zero temperatures on the 18th and 19th rapidly increased ice development.
Read the full account →Waverly (NY)/Sayre (PA) on the Susquehanna River went over its flood stage of 11 feet at 6:42 AM on November 30th. The river crested at 13.11 feet from 5:15 to 6:00 PM on the 30th before falling back below flood stage at 11:05 AM on December 1st.
Read the full account →A deep upper trough and low pressure moving across the Ohio Valley pushed warm and humid air northward ahead of a cold front moving east with the surface low.
Read the full account →In response to very heavy rains across parts of the Allegheny River Basin, the Allegheny River went above flood stage between Lock 9 and Lock 3. The river crested 3.5 feet above the 19 foot flood stage at Lock 9.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Rain during the morning of July 9th helped to saturate the ground, and additional thunderstorms in an anomalously high moisture environment during the early evening hours created flash flooding.
Read the full account →Flooding was observed throughout much of Crawford County during the February 17th-19th, 2022 timeframe. This was due to above normal temperatures causing steady melt of a snow pack containing 2 to upwards of 3 of water equivalency up through the daytime hours of the 17th, and…
Read the full account →A mesoscale convective vortex (MCV) pushed across northwestern Pennsylvania and into New York state during the morning and afternoon hours of September 9, 2023.
Read the full account →A mesoscale convective vortex (MCV) pushed across northwestern Pennsylvania and into New York state during the morning and afternoon hours of September 9, 2023.
Read the full account →A weak frontal system moving through a warm and excessively moist environment triggered thunderstorms with torrential rainfall. These storms were slow moving and produced copious amounts of rain which led to localized flash flooding of roads, small streams and a few residences…
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