Uh. "NO comment," says the Mormon church.
I just scanned this Monday article from the Deseret News: Needs, safety issues in question as Mormon church plans next steps in Japan for members, missionaries
No mention at all of Japanese general population. Only Lds missionaries. Only Lds members. At the end of the article it mentions neighborhood shelters. But instead of it being available to all, it says it's designated for Mormon missionaries: "Each neighborhood has an emergency center where ALL THE MISSIONARIES have been instructed to go in such an emergency. They provide safe shelter, water, and other basic needs," the secretary's report says.
ALL: If you live in Utah & a crisis hits, don't count upon Mormons to be "neighborly" with their stocked goods.
If the crap hits the fan and there is a huge disaster, people will start looking for Mormons because they all know that Mormons have food hidden. If word gets out to an angry, hungry mob, that mormons are hold up with lots of food, if won't be pretty.