A nor’easter churned its way up the East Coast on Sunday, washing out roads and prompting air travel delays as heavily populated areas of the Northeast experienced excessive rain, lashing winds and coastal flooding. Across the continent in western Alaska, the remnants of Typhoon Halong brought hurricane-force winds and catastrophic flooding to coastal communities, pushing entire houses off their foundations.

The nor’easter churned its way up the East Coast over the weekend, washing out roads and prompting air travel delays. There were 384 cancelations and 2,787 delays within, into, or out of the United States by midday Monday, with many of those disruptions affecting Boston Logan International and LaGuardia Airport in New York, according to FlightAware, a website that tracks flight disruptions

Dangerous surf conditions were expected to continue Monday, bringing strong rip currents and beach erosion along many East Coast beaches, the weather service said. Forecasters said more than 2 inches (5 centimeters) of rain could fall in some spots. The greatest threat for major flooding was expected to be in Long Island and southern New Jersey.

AP video by Mingson Lau and Rodrique Ngowi