2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
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 →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 →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 →A stationary frontal system over northeastern Pennsylvania combined with a weak upper level disturbance to focus heavy rain producing thunderstorms over the area.
Read the full account →Mid-level westerly flow of 45-70kts streamed over the Great Lakes/Upper Ohio Valley. A shortwave trough embedded within this zonal flow entered the region and moved eastward throughout the day, helping to provide forcing for ascent and strengthening of deep layer shear.
Read the full account →On the morning of the 21st, a cold front extended southwestward from southern ON to far-northwestern OH. This front drifted southeastward through the early evening, when it became located in vicinity of the major axis of Lake Erie, west-central OH, and east-central IN.
Read the full account →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 →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 →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 →A strong mid-level trough and an associated frontal zone crossed through the|Mid-South and took aim on the OH Valley. Strong forcing associated the energy aloft coupled with a gradually destabilizing boundary layer out ahead it set the stage for areas of locally heavy showers…
Read the full account →A warm front approaching central Pennsylvania in an environment of sufficient instability and shear allowed for thunderstorm formation during the late afternoon and evening hours, with multiple rounds of severe thunderstorms crossing the northern tier of Pennsylvania.
Read the full account →A stationary frontal system over northeastern Pennsylvania combined with a weak upper level disturbance to focus heavy rain producing thunderstorms over the area.
Read the full account →Ample moisture and a near-stationary boundary assisted in the development of slow moving thunderstorms late on June 14th. Precipitable water values exceeding 90% of climatology, which supported efficient rainfall.
Read the full account →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 →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 →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…
Read the full account →A stationary frontal system over northeastern Pennsylvania combined with a weak upper level disturbance to focus heavy rain producing thunderstorms over the area.
Read the full account →Heavy rainfall from the remnants of Tropical Storm Lee produced widespread flooding, flash flooding and river flooding mainly near and to the east of the Susquehanna Valley from September 4-10.
Read the full account →A potent cold front pushed into an unseasonably warm and humid air mass, generating widespread showers and thunderstorms. There was a considerable amount of both low level and deep layer shear, and some of the storms produced damaging winds.
Read the full account →Ample moisture and a near-stationary boundary assisted in the development of slow moving thunderstorms late on June 14th. Precipitable water values exceeding 90% of climatology, which supported efficient rainfall.
Read the full account →A stationary frontal system over northeastern Pennsylvania combined with a weak upper level disturbance to focus heavy rain producing thunderstorms over the area.
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…
Read the full account →Ample moisture and a near-stationary boundary assisted in the development of slow moving thunderstorms late on June 14th. Precipitable water values exceeding 90% of climatology, which supported efficient rainfall.
Read the full account →By 4 PM EDT on 17th, a courthouse was threatened by a mud slide in Kittanning; and numerous roads were flooded countywide, including Rte 66 between Ford City and Leechburg.
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