2,274 first-hand accounts of flood events in Pennsylvania, ranked by impact. Each is a NOAA-written narrative of the moment.
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 →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 →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 slow moving cold front moved northeastward toward northern Pennsylvania, and through the region on the 25th. A surge of deep moisture associated with this system produced a period of heavy rain from late on the 24th, through the morning hours on the 25th.
Read the full account →A slow moving cold front moved northeastward toward northern Pennsylvania, and through the region on the 25th. A surge of deep moisture associated with this system produced a period of heavy rain from late on the 24th, through the morning hours on the 25th.
Read the full account →Modest height falls as a slow moving shortwave trough crossed the region resulted in a few strong to severe storms ahead of a surface cold front.
Read the full account →Modest height falls as a slow moving shortwave trough crossed the region resulted in a few strong to severe storms ahead of a surface cold front.
Read the full account →A low pressure system developed over the Gulf Coast and moved northeast through the Mid-Atlantic states, spreading heavy rain across northeast Pennsylvania from Friday afternoon through Saturday night.
Read the full account →Scattered showers and thunderstorms developed across the Pittsburgh region with the passage of a shortwave trough. Sufficient moisture and instability led to brief, isolated downpours.
Read the full account →Scattered thunderstorms developed in the afternoon as a result of heating beneath an upper-level trough. Fairly steep mid-level lapse rates combined with surface heating resulted in CAPE increasing to near 1000 J/kg.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front.
Read the full account →Heavy rainfall between 1 and 4 inches produced widespread areal flooding across all of central Pennsylvania. Cold season hydrologic conditions, including snow and ice melt contributed to enhanced run-off especially across the higher elevations and northern mountains.
Read the full account →Slow moving thunderstorms along a nearly stationary cold front produced locally heavy rainfall in a short duration, resulting in flash flooding across portions of the Lower Susquehanna Valley.
Read the full account →Slow moving thunderstorms along a nearly stationary cold front produced locally heavy rainfall in a short duration, resulting in flash flooding across portions of the Lower Susquehanna Valley.
Read the full account →Isolated severe thunderstorms developed in the afternoon as a cold front began to sag across the region on the 3rd. The weak front then stalled along the Mason-Dixon line. As an upper level short wave progressed across the front on July 4th, additional thunderstorms developed.
Read the full account →Isolated severe thunderstorms developed in the afternoon as a cold front began to sag across the region on the 3rd. The weak front then stalled along the Mason-Dixon line. As an upper level short wave progressed across the front on July 4th, additional thunderstorms developed.
Read the full account →Isolated severe thunderstorms developed in the afternoon as a cold front began to sag across the region on the 3rd. The weak front then stalled along the Mason-Dixon line. As an upper level short wave progressed across the front on July 4th, additional thunderstorms developed.
Read the full account →Scattered showers and thunderstorms developed over central Pennsylvania during the early afternoon hours, with a couple of cells producing wind damage.
Read the full account →Storms developed the afternoon of the 13th as a result of a passing shortwave to the south and a slow moving trough located north of the Great Lakes. Just like the previous day, despite the fact that effective shear was slightly weak, DCAPE was ranging between 900 to 1000 J/kg.
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