It was one of the first stations owned by Hearst to cease analog broadcasting (KITV in Honolulu, Hawaii was the other).
In September 2006, WPTZ established a daily web video forecast as part of a major revamping of its website.
From the mid-1990s onward, WNNE's operations were progressively cut back, culminating in 2016 when all separate branding and idents were eliminated. WNNE primarily serves the southern and eastern portions of the Plattsburgh/Burlington market including Sullivan and Grafton counties in New Hampshire.
Additional viewership comes from surrounding counties in the Southern New Hampshire sub-market which is actually part of the Greater Boston designated market area.
During the analog era, WPTZ was the only station in the area that did not operate any translators.
WNNE in Hartford, Vermont operates as a full time satellite of WPTZ extending the NBC signal into the Upper Valley of East-Central Vermont and West-Central New Hampshire.
The station cited the area's declining population as the reason for the change.
The 2000 United States Census did not even count North Pole as a separate community, instead folding it into Lake Placid.
Both WPTZ and WSTM-TV lost those statuses on December 1, 2016 when WVNC-LD signed on as the Watertown market's first full-time NBC affiliate.
The station signed on the air on December 8, 1954 as WIRI, licensed to the hamlet of North Pole, New York.