The National Weather Service has issued a Tornado Watch:

TORNADO WATCH OUTLINE UPDATE FOR WT 392
NWS STORM PREDICTION CENTER NORMAN OK
255 PM EDT TUE OCT 2 2018

TORNADO WATCH 392 IS IN EFFECT UNTIL 1100 PM EDT

PENNSYLVANIA COUNTIES INCLUDED ARE:

ALLEGHENY ARMSTRONG BEAVER
BERKS BLAIR BRADFORD
BUTLER CAMBRIA CAMERON
CARBON CENTRE CLARION
CLEARFIELD CLINTON COLUMBIA
CRAWFORD DAUPHIN ELK
ERIE FOREST HUNTINGDON
INDIANA JEFFERSON JUNIATA
LACKAWANNA LAWRENCE LEBANON
LEHIGH LUZERNE LYCOMING
MCKEAN MERCER MIFFLIN
MONROE MONTOUR NORTHAMPTON
NORTHUMBERLAND PERRY PIKE
POTTER SCHUYLKILL SNYDER
SULLIVAN SUSQUEHANNA TIOGA
UNION VENANGO WARREN
WASHINGTON WAYNE WESTMORELAND
WYOMING