2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
Torrential thunderstorm rains over a short duration produced flash flooding across the lower Susquehanna Valley during the mid to late afternoon. The very heavy rain caused significant flash flooding in downtown Harrisburg, northern York County and southern Adams County.
Read the full account →Torrential thunderstorm rains over a short duration produced flash flooding across the lower Susquehanna Valley during the mid to late afternoon. The very heavy rain caused significant flash flooding in downtown Harrisburg, northern York County and southern Adams County.
Read the full account →A few rounds of thunderstorms on July 24th and 25th preceded a cold frontal passage. High levels of instability, ample shear, and pre-frontal disturbances provided thunderstorm clusters producing widespread damaging wind gusts.
Read the full account →A few rounds of thunderstorms on July 24th and 25th preceded a cold frontal passage. High levels of instability, ample shear, and pre-frontal disturbances provided thunderstorm clusters producing widespread damaging wind gusts.
Read the full account →The first week of March was mild starting the "spring" thaw across central New York and northeast Pennsylvania. Snow melt combined with some rain causing minor flooding along the Upper North Branch of the Susquehanna and the Tioughnioga and Chenango Rivers.
Read the full account →Minor flooding occurred at the Waverly/Sayre gauge on the Susquehanna River from heavy rainfall as an intense area of low pressure tracked from southern Indiana Tuesday morning on the 17th to northeast of Lake Huron on the morning of the 18th and through eastern Canada Wednesday…
Read the full account →Widespread heavy rainfall of 2 to 4 inches produced extensive flooding across Central Pennsylvania for the first three days of December 2010. The heavy rain fell in two distinct periods with the first round of 1-2 inches falling by the evening of November 30th.
Read the full account →Widespread heavy rainfall of 2 to 4 inches produced extensive flooding across Central Pennsylvania for the first three days of December 2010. The heavy rain fell in two distinct periods with the first round of 1-2 inches falling by the evening of November 30th.
Read the full account →Widespread heavy rainfall of 2 to 4 inches produced extensive flooding across Central Pennsylvania for the first three days of December 2010. The heavy rain fell in two distinct periods with the first round of 1-2 inches falling by the evening of November 30th.
Read the full account →The surface synoptic set-up on June 22, 2022 was similar to that of the severe weather event just 6 days earlier, as a north-south stationary boundary bisected central Pennsylvania ahead of a cold front approaching from the Great Lakes.
Read the full account →An area of low pressure developed along the Gulf Coast and tracked northeast through the Tennsessee and Ohio Valleys through the 27th. This are of low pressure quickly intensified through the day on the 28th as it continued tracking into western New York State.
Read the full account →A cluster of showers and storms pushed into south-central Pennsylvania from the southwest during the evening of July 15, 2023. Additional showers and storms developed farther to the northeast from the middle Susquehanna Valley northeastward into the Endless Mountains region.
Read the full account →A cluster of showers and storms pushed into south-central Pennsylvania from the southwest during the evening of July 15, 2023. Additional showers and storms developed farther to the northeast from the middle Susquehanna Valley northeastward into the Endless Mountains region.
Read the full account →By 730 AM, the combined effects of rain, snow melt, and ice jam movement flooded basements in southern Allegheny County; and near Everson in Westmoreland Co. By 810 AM, Armstrong, Beaver, and Butler counties reported widespread flooding.
Read the full account →The remnants of Hurricane Nicole, in combination with a Great Lakes cold front, lead to heavy precipitation totals across the region. Rainfall totals of 1.5 to 3.5 inches, with localized higher totals, were common across the region.
Read the full account →A nearly stationary frontal boundary across the upper Ohio valley was the focus for severe thunderstorms. A few supercells developed along the front with one severe thunderstorm producing a tornado in Tuscarawas county Ohio.
Read the full account →A nearly stationary frontal boundary across the upper Ohio valley was the focus for severe thunderstorms. A few supercells developed along the front with one severe thunderstorm producing a tornado in Tuscarawas county Ohio.
Read the full account →Scattered thunderstorms were spawned over northeast Pennsylvania by an upper level disturbance that moved out of the Ohio Valley earlier in the evening.
Read the full account →Heavy thunderstorm rain on already saturated soil caused flooding of streams, low lying areas, roads and basements, especially in the areas of Meadville, Vernon Township and Conneaut Lake (all in Crawford County).
Read the full account →A quick moving storm system brought a warm front north across the region...quickly followed by a cold front. While some gusty winds were reported, the only severe weather was a weak EF0 tornado that occurred in the warm sector behind the warm front.
Read the full account →A quick moving storm system brought a warm front north across the region...quickly followed by a cold front. While some gusty winds were reported, the only severe weather was a weak EF0 tornado that occurred in the warm sector behind the warm front.
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 →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.
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