I predict he was the longtime meteorologist on WCVB-TV 5 Boston. (And when I saw a report on this on Ch 25 I knew
it was him)
10/1/02:
>>A veteran MASSACHUSETTS TV meteorologist is looking for work this week. Mark Rosenthal started at WCVB (Channel 5) in Boston the year it signed on, 1972, as a high school intern, and joined the station for real in 1988, most recently doing weekends and filling in on weekdays. But when WCVB added Harvey Leonard, the longtime channel 7 fixture, to its staff over the summer (not long after hiring J.C. Monahan as an additional morning/fill-in talent), that left one weatherman too many at 5 TV Place, with Rosenthal the odd man out. No word yet on where he might land next....
link for above http://www.bostonradio.org/nerw/nerw-021001.html