There’s been live coverage on KCBS-AM (San Francisco), where in fact I first heard about it while I was driving not too long ago. It’s been confirmed as an Asiana 777. The station has gone to regularly scheduled traffic news, weather updates, and commercials, but it’s been going back to this news.
No local TV stations have been carrying continuous coverage. The news did break on KCRA (NBC from Sacramento—I’m not in the Sacramento market but get it on cable), but now the station is back to motocross. KGO (ABC) had a banner. Probably other stations have been similar.
Update: now KTVU (Fox affiliate) has local coverage, and KGO (ABC, as I’d mentioned) have an ABC News special report.