Wave on Saturday, May 16.
Below: from about 8000 feet. The hole in the clouds ran from about 9 miles NW of Freehold, to 8-9 miles SE, and remained there from 10:30 AM to 4-5 PM.
Below: From about 5000 feet altitude:
Below: Looking roughly west. Visible at bottom left is the kink in Route 23 where it comes downhill from Point Lookout.
Below: Looking approximately north-east toward Freehold Airport. The airport is in the dark area shadowed by the cloud, as it was for almost the whole day, 10:30 AM to 4-5 PM. Note the darkness of the underside of the cloud. In contrast, someone located on the kink of Route 23 would have been in sun all day long.
Wind aloft: 3000 feet -- 170 @ 29. 6000 feet - 210 @ 30. 9000 - 210 @ 27.
Major clue - Unclouded area of sky downwind (north) of Catskills, which remained open all day. This is the 'down' part of the wave -- or at least the southern side of it is 'down'. Associated clue -- overcast area north of the unclouded area.
Strength of lift: About 10 kt in mid-afternoon at an altitude of 3000-4000 feet.
Max. altitude attained -- 10,060 feet. Earlier it was about 8000, then 8800.
Picture below -- via Bruce Sto. from