Here's what the National Weather Service says
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
356 AM EDT THU AUG 31 2006
...HEAVY RAINS FROM THE REMNANTS OF ERNESTO LIKELY LATER FRIDAY INTO
SATURDAY...
THE REMNANTS OF TROPICAL STORM ERNESTO WILL BE MOVING UP THE
EASTERN SEABOARD AND TOWARD PENNSYLVANIA OVER THE NEXT COUPLE OF DAYS.
THE DEEP...TROPICAL MOISTURE ASSOCIATED WITH WHAT REMAINS OF
ERNESTO WILL BE ENHANCED BY A STRONG EASTERLY FETCH FROM THE
ATLANTIC OCEAN...AND A STALLED FRONTAL BOUNDARY THAT WILL LIE
JUST TO THE SOUTH OF THE STATE THROUGH FRIDAY NIGHT.
WHILE THERE IS STILL SOME UNCERTAINTY TO THE EXPECTED TRACK OF
ERNESTO...THE THREAT FOR HEAVY RAIN OVER CENTRAL PENNSYLVANIA WILL
INCREASE AS THE STALLED FRONT AND WHAT IS LEFT OF ERNESTO INTERACT
AND MOVE NORTHWARD.
AT THIS STAGE...THE MOST LIKELY TIME FOR HEAVY RAIN TO AFFECT
CENTRAL PENNSYLVANIA WILL BE FROM ABOUT FRIDAY EVENING THROUGH THE
OVERNIGHT INTO EARLY SATURDAY MORNING. THIS RAIN COULD LEAD TO
FLOODING.
IF THE THREAT BECOMES MORE CERTAIN...YOUR NATIONAL WEATHER SERVICE
WILL ISSUE A FLOOD WATCH.
LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
UPDATES ON THIS SITUATION.
FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE...AT
WEATHER.GOV/STATECOLLEGE...ALL IN LOWER CASE.