Tuesday’s early-morning text message that awoke Marin County residents with a warning that a tsunami watch was in effect for the California coast came as no shock to the county’s emergency services coordinator, Ursula Hank. The 7.9-magnitue earthquake in the Gulf of Alaska triggered evacuations in some coastal areas of that state and alerts along the Pacific coast, though officials lifted the watch hours later. Later that day, the Board of Supervisors approved an updated…