That .04 at Logan is a slant stick. Having been near there in Charlestown earlier I would say "heavy coating".
Started in Arlington at 5 am with about 1.5" moving east from there amounts dropped significantly to about .5 in east Somerville. South to com ave was about the same.
Yeah that nws map probably means western section of metro Boston (EAst Arlington, West Medford and west Somerville probably do 3" and east Somerville, Charlestown do 1" maybe.
Some tv mets have upped boston to 2-4 but most are still playing conservative and following nws as of now.
I do see some issues with accumulations on the coastal roadways. That east wind I don't think will be denied and the airmass still basically sucks so on pavement more than 2" might be tough inside of about 5-7 miles of the coast.
The guy on NBC10 (not Bouchard) mentioned the seasonal trend and the ocean temps as reasons for conservative forecast for the coastal area. Everyone has also mentioned that it is early and all this could change..
I don't know but it will matter the most on pavement, grass will still accumulate at marginal temps.
This could be why so few metro schools have called as.of now. They still have time to see what's on the ground early AM.