...BERTHA NOW SOUTH OF THE COAST OF SOUTHERN LOUISIANA... ...WARNINGS DISCONTINUED FOR PORTIONS OF THE LOUISIANA AND MISSISSIPPI COASTS... As of 1:00 AM CDT Thu Jul 23 the center of Bertha was located near 29.1, -91.6 with movement W at 12 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 45 mph.