Pittsburgh, Pennsylvania – A surge of warmer air will push temperatures into the 70s before a late-night round of thunderstorms threatens to disrupt travel across western Pennsylvania.
According to the National Weather Service in Pittsburgh, showers and thunderstorms are expected to develop late Tuesday, with the strongest storms arriving between 8 p.m. and early Wednesday morning. Areas along and north of I-80, including Butler, Clarion, and Mercer counties, face the greatest risk for stronger storms.
The Pittsburgh metro, along with communities like Washington and Greensburg, could see heavy downpours and gusty winds overnight. Some storms may produce wind gusts near 60 mph and small hail, especially as a cold front moves through the region.
Roadways including I-79, I-76 (Pennsylvania Turnpike), and I-80 may become slick with reduced visibility during heavier rain. Brief ponding is possible in low-lying areas and construction zones.
Temperatures will remain mild ahead of the system, with highs reaching the upper 60s to low 70s through Tuesday before cooler air filters in midweek.
Residents should stay weather-aware Tuesday night and keep alerts enabled, especially while sleeping. Additional advisories may be issued as storm timing and intensity become clearer.
