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Flood — Butler, PA

May 29, 2019

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. With a stalled boundary, and precipitable water values pushing up to 2 inches, flash flooding was also a concern throughout the entire day.

Source: NOAA National Weather Service Storm Events Database (event 818549). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Butler, PA

This event is one of many recorded floods in Butler County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Butler County flood data →

More Flood Stories

Flash Flood$5.0M damage

Butler, PA · May 28, 2019

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 →
Flash Flood$20K damage

Butler, PA · Aug 5, 2022

Slow moving pulse storms created flash flooding conditions across the region. The storms developed in a very moist, buoyant environment where 2000-3000 J/kg SBCAPE and 1.7-1.9 inch PW values, supported very efficient rainfall rates.

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Flash Flood$10K damage

Butler, PA · May 28, 2019

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 →
Flash Flood$10K damage

Butler, PA · Aug 5, 2022

Slow moving pulse storms created flash flooding conditions across the region. The storms developed in a very moist, buoyant environment where 2000-3000 J/kg SBCAPE and 1.7-1.9 inch PW values, supported very efficient rainfall rates.

Read the full account →