Overview
- Rain began the morning of Aug. 20 and prompted flood watches for Greene and Washington counties as the National Weather Service warned of localized flash flooding in low-lying and poorly drained areas.
- Pittsburgh's month-to-date rainfall rose to about 6.88 inches after roughly 1.04 inches fell overnight, putting August among the wetter months on local records.
- Radar estimates show pockets of very heavy rain with a broad swath of 3+ inches south of I-70 and spots near 3.5 inches through parts of Washington County.
- Forecasters have placed the region under a marginal severe-weather risk for Saturday with the main concerns being strong straight-line winds, large hail, and a small tornado chance.
- Storms have caused localized impacts to residents and infrastructure with Duquesne Light reporting about 660 customers without power and PennPower reporting about 157 outages as of Friday morning.