New reports pending more confirmation is that the alert level in hospitals and other medical facilities in northern Israel has been raised to Level C which is considered the highest.
Israel is taking Iranian threats seriously and appears to be posturing itself to respond both defensively and offensively.
Wrap up for now
It appears that Israel executed on targetable intelligence of Iranian munitions transport - most likely to the Hezbollah. this is similar to a pattern seen the past couple strikes - hitting munitions that could be used against it.
Strikes like this, IMHO, can keep Iranian/Hezbollah planners jumping and off balance, deterring the expected rocket attack. But I doubt this dance can keep on indefinitely, but I think Israel is trying to create a situation where iran/Hezbollah cannot efficiently orchestrate its attack in a coordinated manner, opening them up for a devastating Israeli counter strike. Only time will tell and the clock is ticking.