Flash Flood — Greene, Pennsylvania

2024-04-11 · near Morrisville, Greene, Pennsylvania

Event narrative

Southbound Route 19 closed between Rolling Meadows Road and Orchard Road due to flooding. Flooding also along Colonial Drive.

Wider weather episode

A strong mid-level trough and an associated frontal zone crossed through the

Mid-South and took aim on the OH Valley. Strong forcing associated the energy aloft coupled with a gradually destabilizing boundary layer out ahead it set the stage for areas of locally heavy showers and thunderstorms for several hours and prompted dangerous flash flooding. A flash flood emergency was issued for portions of Allegheny County when 4 to 5 inches of rain fell on the community of Oakdale, PA in less than 6 hours. Elsewhere, flash flooding occurred along small tributaries with widespread rainfall amounts of 2 to 3 inches.

View location on OpenStreetMap → (39.8900, -80.1600)

Source: NOAA Storm Events Database, event_id 1179332. Narrative written by the NWS forecast office that issued the report.