At 500 AM HST (1500 UTC), the center of Tropical Storm Darby was located near latitude 18.8 North, longitude 153.9 West or Darby is moving toward the west near 9 mph (15 km/h). Darby's forward motion is expected to slow slightly today followed by a turn toward the northwest tonight and Sunday. On the forecast track, the center of Darby is forecast to pass over the Big Island today and Maui tonight. Darby will approach Oahu on Sunday and Kauai Monday. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Some weakening is forecast during the next 48 hours. Tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm force winds are expected over the Big Island starting this morning, over portions of Maui County this afternoon and evening, and over Oahu Sunday. Tropical storm force winds are possible over Kauai Monday. SURF: Swells generated by Darby are expected to impact the Hawaiian Islands over the next couple of days. RAINFALL: Storm total rainfall of 10 to 15 inches with locally higher amounts...could cause life-threatening flash floods as well as landslides. NEXT ADVISORY ------------- Next intermediate advisory at 800 AM HST. Next complete advisory at 1100 AM HST.