The strongest of these is Cyclone Pam, whose maximum sustained estimated winds had topped 165 mph as it slammed the Republic of Vanuatu Friday night and Saturday morning, local time.
Meanwhile, Cyclone Olwyn made landfall in far western Australia, Cyclone Nathan made a U-turn in the Coral Sea north of Cairns, Australia and, finally, Tropical Storm Bavi is spinning well east of Guam in the western Pacific Ocean.
Wind field analyses also picked out the four circulations well. You could trace wind streamlines coming from the western side of Tropical Storm Bavi eventually feeding into the eastern side of much stronger Cyclone Pam. The centers of Bavi and Pam were about 1,600 miles apart, at that time. (Remember winds flow clockwise around low-pressure systems, such as tropical cyclones, in the Southern Hemisphere).
Published Aug 26 2015
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