LIRR service between Penn Station and Jamaica running every half hour

LIRR service between Penn Station and Jamaica will be running every half hour in both directions, the MTA announced as it braces for a strike. 

"Trains are rerouted to/from Grand Central or start/end at Jamaica," read the message. "There is half-hourly service between Penn Station and Jamaica in both directions."

A fire in the East Side tunnel on Thursday snarled the evening rush.