| BULLETIN Hurricane Lane Intermediate Advisory Number 35A NWS Central Pacific Hurricane Center Honolulu HI EP142018 200 AM HST Thu Aug 23 2018 ...LANE WEAKENS SLIGHTLY WHILE TRACKING TOWARD THE HAWAIIAN ISLANDS... SUMMARY OF 200 AM HST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION... 16.5N 157.3W ABOUT 230 MI... 370 KM SSW OF KAILUA-KONA HAWAII ABOUT 335 MI... 540 KM S OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS... 130 MPH... 215 KM/H PRESENT MOVEMENT... NW OR 315 DEGREES AT 7 MPH... 11 KM/H MINIMUM CENTRAL PRESSURE...949 MB...28.02 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Oahu * Maui County...including the islands of Maui, Lanai, Molokai and Kahoolawe * Hawaii County A Hurricane Watch is in effect for... * Kauai County...including the islands of Kauai and Niihau A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Interests in the the Northwestern Hawaiian Islands should monitor the progress of Hurricane Lane. For storm information specific to your area, please monitor products issued by the National Weather Service office in Honolulu Hawaii. DISCUSSION AND OUTLOOK ---------------------- At 200 AM HST (1200 UTC), the eye of Hurricane Lane was located by satellite and radar near latitude 16.5 North, longitude 157.3 West. Lane is moving toward the northwest near 7 mph (11 km/h). Thisgeneral motion is expected to continue today, with a gradual turntoward the north-northwest. On Friday, a turn toward the north is anticipated as Lane's forward motion slows even more. A turn back toward the west is expected on Saturday. On the forecast track, the center of Lane will move very close to or over the main Hawaiian Islands later today through Friday. Maximum sustained winds are near 130 mph (215 km/h) with higher gusts. Lane is a powerful category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some weakening is forecast during the next day or so, with more significant weakening thereafter. Lane is expected to remain a hurricane as it approaches the islands. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The estimated minimum central pressure is 949 mb (28.02 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected on portions of the Big Island beginning later this morning, with hurricane conditions expected in some areas by tonight. Tropical storm conditions are expected to begin over portions of Maui county later today, with hurricane conditions expected in some areas by Friday. Tropical storm conditions are expected to begin on Oahu late tonight, with hurricane conditions expected Friday into Friday night. RAINFALL: Rain bands from Hurricane Lane will continue to overspread the Hawaiian Islands. Excessive rainfall associated with Lane will impact the Hawaiian Islands into the weekend, leading to significant and life-threatening flash flooding and landslides. Lane is expected to produce total rain accumulations of 10 to 20 inches, with localized amounts in excess of 30 inches over the Hawaiian Islands. SURF: As Lane is slow-moving, large swells generated by Lane will severely impact the Hawaiian Islands over the next couple of days. These swells will produce very large and damaging surf along exposed west and south facing shorelines. A prolonged period of high surf will likely lead to significant coastal erosion. STORM SURGE: The combination of a dangerous storm surge and large breaking waves will raise water levels by as much as 2 to 4 feet above normal tide levels along south and west facing shores near the center of Lane. The surge will be accompanied by large and destructive waves. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST. $$ Forecaster Birchard |