August 28, 9:42 am: The National Weather Service in Mt. Holly has extended the flash flood warning for Sussex, Warren, Morris, and parts of Hunterdon and Somerset counties in New Jersey until 1:45 this afternoon. Parts of eastern counties in Pennsylvania are also under the warning.
The advisory notes that “while the heaviest rain has moved to the north of the area, latest reports indicate that many locations have received 6 to 8 inches of rain since yesterday. Runoff from this extreme rainfall will continue throughout the day today with widespread flooding of small creaks [sic] and streams. Many roadways are closed and impassible. This is a very serious flood situation.”
It goes on to say that “locations in the warning include but are not limited to Morristown…Newton…Allentown…Easton and Reading.”
“A flash flood warning means that flooding is imminent or occurring. If you are in the warning area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. Never attempt to cross swiftly flowing waters or waters of unknown depth by foot or in an automobile.”
Additional rainfall amounts of less than one inch are possible in the warned area, the advisory went on to say.
A Tropical Storm Warning continues in Morris and surrounding counties, with rainfall expected to end by noon. An update posted at 9:17 am today warns that:
When making decisions….do not focus on the exact forecast track of the hurricane…as Irene is a large storm. This remains a dangerous situation. If you are in a safe location…then please remain there. If flooding threatens you…then please move to higher ground.