2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
A shield of moderate to heavy rainfall, associated with the remnants of tropical cyclone Ida, moved from the DelMarVa peninsula to New England.
Read the full account →A passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area.
Read the full account →Low pressure moving through central New York triggered numerous thunderstorms across the area. A frontal boundary became stationary over northeast Pennsylvania during the afternoon.
Read the full account →Low pressure moving through central New York triggered numerous thunderstorms across the area. A frontal boundary became stationary over northeast Pennsylvania during the afternoon.
Read the full account →Major flooding occurred on the Lackawaxen River at Hawley. The Lackawaxen River at Hawley rose above the 11 foot flood stage early in the afternoon on Tuesday the 27th.
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 →A line of thunderstorms developed east of Cleveland from a breeze off of Lake Erie near 17Z. Areas south and east of the line gave way to more storms as outflow boundaries converged. With high PWAT values (near 1.90) flash flooding became an issue with training storms.
Read the full account →Locations hit by rain the evening of July 23rd were prime for possible flooding given development of rain earlier in the day. A marginal for excessive rainfall was in place as well given the 1.8 to 1.9 PWATS. A crossing trough created the development of thunderstorms and showers.
Read the full account →A north-south oriented stationary front extended along the spine of the Appalachian mountains through Pennsylvania and into the southern counties of New York state. A stronger cold front was pushing in from the Great Lakes.
Read the full account →A warm and humid summertime airmass was present across the region. The remnants of a small scale complex of thunderstorms moved into northeast Pennsylvania during the peak heating of the afternoon.
Read the full account →Slow moving thunderstorms with torrential downpours caused flash flooding in Salisbury and Upper Saucon Townships in southeastern Lehigh County. Flooding of Main Street businesses resulted in about 10 million dollars in damage.
Read the full account →By 1220 AM on 6th, Indianola Fire Dept began to flood, just northwest of Springdale. By 230 AM, Raccoon Creek was flooding 40 acres of fields. Rte 151, Hookstown Grade Rd, and Park Rd were flooded. Natrona reported 2 inches of rain.
Read the full account →Unseasonably cool air associated with a strong upper level low over the Great Lakes region combined with warm Lake Erie waters to produce persistent, intense lake-enhanced rainfall which trained repeatedly over northern Erie County, Pennsylvania during the early morning hours of…
Read the full account →The first of what eventually became numerous large ice jams were reported by ice observers on the Allegheny River and its tributaries by December 26th. This abnormally early ice development continued to build as frigid temperatures persisted.
Read the full account →It started 5 PM EDT 17th, when Graysville flooded, according to newspaper accounts. By 740 PM on 17th, there was widespread road and stream flooding countywide, including all roads in and out of Greensburg; Rte 21 in Franklin Twp; and Rte 18 in Centre Twp.
Read the full account →A shortwave trough crossed the Great Lakes on July 19th and then dove southward on the eastern flank of an upper ridge. The atmosphere was sufficiently unstable to allow isolated strong storms to develop.
Read the full account →A shortwave trough crossed the Great Lakes on July 19th and then dove southward on the eastern flank of an upper ridge. The atmosphere was sufficiently unstable to allow isolated strong storms to develop.
Read the full account →The risk for severe storms continued May 29th as necessary ingredients stayed in place. An unstable/ buoyant atmosphere, wind shear to sustain updrafts, and large scale |ascension with a crossing shortwave were all present.
Read the full account →The risk for severe storms continued May 29th as necessary ingredients stayed in place. An unstable/ buoyant atmosphere, wind shear to sustain updrafts, and large scale |ascension with a crossing shortwave were all present.
Read the full account →The risk for severe storms continued May 29th as necessary ingredients stayed in place. An unstable/ buoyant atmosphere, wind shear to sustain updrafts, and large scale |ascension with a crossing shortwave were all present.
Read the full account →The risk for severe storms continued May 29th as necessary ingredients stayed in place. An unstable/ buoyant atmosphere, wind shear to sustain updrafts, and large scale |ascension with a crossing shortwave were all present.
Read the full account →A passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area.
Read the full account →A passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area.
Read the full account →A passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area.
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