2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
A crossing mid-level shortwave supported development of showers and thunderstorms with 2000-3000 J/kg of MUCAPE and weak deep layer shear. Anomalously high PWAT values, even for July, up to 2.0 inches were more than sufficient for any thunderstorms to produce high rainfall rates…
Read the full account →A crossing mid-level shortwave supported development of showers and thunderstorms with 2000-3000 J/kg of MUCAPE and weak deep layer shear. Anomalously high PWAT values, even for July, up to 2.0 inches were more than sufficient for any thunderstorms to produce high rainfall rates…
Read the full account →A crossing mid-level shortwave supported development of showers and thunderstorms with 2000-3000 J/kg of MUCAPE and weak deep layer shear. Anomalously high PWAT values, even for July, up to 2.0 inches were more than sufficient for any thunderstorms to produce high rainfall rates…
Read the full account →Heavy rains from tropical moisture brought 1 to 3 inches of rain to Luzerne County Sunday the 25th to Monday morning the 26th. This initial rainfall set the stage for flash flooding as another round of heavy rain moved through the county late Monday afternoon and evening.
Read the full account →A low pressure system moved northeast from Illinois to the Great Lakes region during the day. With high pressure to the east over New England, a tightening pressure gradient brought an increase in winds as the low approached.
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →A mid-level trough, embedded shortwaves, and jet exit region dynamics provided necessary lift within an environment characterized by 1.7-1.9 precipitable water values to produce heavy, slow moving showers and thunderstorms that resulted in instances of flash flooding across…
Read the full account →At 132 AM EDT on 9th, Rte 208 flooded near Shippenville; Huey Rd flooded 4 miles south of Sligo; and Rte 58 flooded 6 miles west of Sligo. Some roads were still flooded as of 8 AM EDT on 9th.
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 →An upper level trough, centered over the Ohio valley on the Sept 6th absorbed the remnants of Tropical Storm Lee allowing for deep moisture to slowly progress northward through the Mid-Atlantic states.
Read the full account →A cold front crossed the Susquehanna Valley during the early evening hours of July 9, 2021, accompanied by scattered thunderstorms. There were wind damage reports along the path of a particularly impressive bow echo that developed over eastern Perry County and dropped…
Read the full account →Slow-moving low pressure over Northeast Pennsylvania was the focus for a constant stream of heavy rain-producing thunderstorms during the overnight hours. A quick rainfall of 2.5 to 3.5 inches caused swollen streams and areas of flooding.
Read the full account →Slow-moving low pressure over Northeast Pennsylvania was the focus for a constant stream of heavy rain-producing thunderstorms during the overnight hours. A quick rainfall of 2.5 to 3.5 inches caused swollen streams and areas of flooding.
Read the full account →Slow-moving low pressure over Northeast Pennsylvania was the focus for a constant stream of heavy rain-producing thunderstorms during the overnight hours. A quick rainfall of 2.5 to 3.5 inches caused swollen streams and areas of flooding.
Read the full account →A cold front crossed the Susquehanna Valley during the early evening hours of July 9, 2021, accompanied by scattered thunderstorms. There were wind damage reports along the path of a particularly impressive bow echo that developed over eastern Perry County and dropped…
Read the full account →The leading edge of a trough initiated convection across the region during the early afternoon of August 29th. With little deep-layer wind shear available for quick storm motion, flash flooding occurred under warm, moist conditions (PWATs ranging 1.8 to 2.0 inches under…
Read the full account →The leading edge of a trough initiated convection across the region during the early afternoon of August 29th. With little deep-layer wind shear available for quick storm motion, flash flooding occurred under warm, moist conditions (PWATs ranging 1.8 to 2.0 inches under…
Read the full account →The stalled boundary began to lift north during the day on the 17th but remained the focus of diurnal convection. While the front did eventually shift off to the east on the 18th, additional storms were able to fire with the lingering moist airmass as an upper level disturbance…
Read the full account →An upper-level low pressure system was the driving force of scattered storms across Northeast Pennsylvania. Warm and moist air contributed to several rounds of heavy rain producing thunderstorms over the northern tier counties.
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