ZCZC HFOTCPCP2 ALL TTAA00 PHFO DDHHMM BULLETIN Hurricane Douglas Intermediate Advisory Number 20A NWS Central Pacific Hurricane Center Honolulu HI EP082020 200 AM HST Sat Jul 25 2020 ...DOUGLAS CONTINUES WEST-NORTHWEST TOWARD HAWAII... SUMMARY OF 200 AM HST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...18.7N 147.7W ABOUT 485 MI...780 KM E OF HILO HAWAII ABOUT 690 MI...1105 KM ESE OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...973 MB...28.73 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... None. SUMMARY OF WATCHES AND WARNING IN EFFECT... A Tropical Storm Warning is in effect for... * Hawaii County * Maui County, including the islands of Maui, Lanai, Molokai and Kahoolawe A Hurricane Watch is in effect for... * Hawaii County * Maui County, including the islands of Maui, Lanai, Molokai and Kahoolawe * Oahu A Tropical Storm Warning means that tropical storm conditions are expected somewhere withing the warning area within 36 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within 36 to 48 hours. Interests elsewhere in the main Hawaiian Islands, and in the Papahanaumokuakea Marine National Monument, should monitor the progress of this system. 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 center of Hurricane Douglas was located near latitude 18.7 North, longitude 147.7 West. Douglas is moving toward the west-northwest near 18 mph (30 km/h). This motion is expected to continue through Saturday, followed by a slight decrease in forward speed and a turn toward the west. On the forecast track, Douglas will be near the main Hawaiian Islands Saturday night through Sunday night. Maximum sustained winds are near 110 mph (175 km/h) with higher gusts. Douglas is a category 2 hurricane on the Saffir-Simpson Hurricane Wind Scale. Gradual weakening is expected to continue through the weekend. However, Douglas is still forecast to be near hurricane strength when it nears the islands. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 115 miles (185 km). The estimated minimum central pressure is 973 mb (28.73 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are possible across portions of the main Hawaiian Islands late Saturday night through Monday. Tropical Storm conditions are expected across Hawaii County and Maui County beginning Saturday night or Sunday. SURF: Large swells generated by Douglas are expected to affect the Hawaiian Islands this weekend. These swells are likely to cause life-threatening surf and rip current conditions for a couple of days. RAINFALL: Heavy rainfall associated with Douglas is expected to affect portions of the main Hawaiian Islands from late Saturday night through Monday. Total rain accumulations of 5 to 10 inches with locally higher amounts will be possible on the smaller islands, especially across elevated terrain. This rain may result in life-threatening flash flooding and land slides, as well as rapid water level rises on small streams. 3 to 6 inches of rainfall are possible on the Big Island, with locally higher amounts. Key messages for Douglas can be found in the Tropical Cyclone Discussion under AWIPS header HFOTCDCP2 and WMO header WTPA32 PHFO. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST. $$ Forecaster Jelsema NNNN