A 19-year-old girl was seriously injured after falling off the roof of this building while urinating, police sources said. View Full Caption DNAinfo/Trevor Kapp

WASHINGTON HEIGHTS — A drunk woman was blown off the roof of a Washington Heights building while urinating, police said.

The woman, 19, was caught by a gust of wind on the top of a 179th Street building, near Audubon Avenue, at 2:15 a.m. Wednesday, the NYPD said.

She fell two stories and was in critical but stable condition at Harlem Hospital Thursday, police said.

The woman had apparently been drinking and had gone up to the roof with a 21-year-old man, according to the NYPD.