A powerful typhoon is heading toward the southern island prefecture of Okinawa, the weather agency said Thursday, warning that it may bring heavy rain to a wide area of Japan over the three-day weekend.The Japan Metrological Agency warned of strong winds, lightning strikes, and heavy downpours. It will come about a week after another strong typhoon traversed the archipelago, killing four, leaving some areas without power and greatly disrupting transport.Typhoon Kong-rey, the season's 25th, is forecast to approach Okinawa on Friday and then travel north toward the Korean Peninsula before rea…READ FULL ARTICLE