Public Tropical Cyclone Advisory
666 WTPA32 PHFO 161150 TCPCP2 BULLETIN Tropical Storm Lala Intermediate Advisory Number 16A NWS Central Pacific Hurricane Center Honolulu HI CP012026 Issued by NWS National Hurricane Center Miami FL 200 AM HST Sun Aug 16 2026 ...DAMAGING WINDS AND HEAVY RAIN CONTINUE ACROSS THE BIG ISLAND AND MAUI COUNTY... ...CONDITIONS EXPECTED TO DETERIORATE ACROSS OAHU THIS MORNING... SUMMARY OF 200 AM HST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...19.9N 157.6W ABOUT 105 MI...170 KM WNW OF KAILUA-KONA HAWAII ABOUT 100 MI...160 KM S OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...991 MB...29.27 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Hurricane Warning for Hawaii County has been replaced with a Tropical Storm Warning. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Hawaii County * Maui County, including the islands of Maui, Lanai, Molokai and Kahoolawe * Oahu * Kauai County, including the islands of Kauai and Niihau A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 to 24 hours. Interests in the Papahanaumokuakea Marine National Monument should monitor the progress of Lala. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 200 AM HST (1200 UTC), the center of Tropical Storm Lala was located near latitude 19.9 North, longitude 157.6 West. Lala is moving toward the northwest near 15 mph (24 km/h). A gradual westward turn with an increase in forward speed is expected today, followed by a continued westward motion through Tuesday. The core of the storm is forecast to remain south of the smaller main Hawaiian Islands and the easternmost Northwestern Hawaiian Islands during the next couple of days. Maximum sustained winds have decreased to near 70 mph (110 km/h) with higher gusts. A gradual weakening trend is forecast today and Monday. Some restrengthening is possible by midweek. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. The estimated minimum central pressure is 991 mb (29.27 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Lala can be found in the Tropical Cyclone Discussion under AWIPS header HFOTCDCP2 and WMO header WTPA42 PHFO. WIND: Tropical storm conditions will persist across portions of the Big Island of Hawaii early this morning, with the strongest winds expected in areas of higher terrain. Tropical storm conditions will spread westward from Maui County to Oahu this morning, then to Kauai County later today. Wind speeds atop mountains and on the windward and leeward slopes are often up to 30 percent stronger than the near-surface winds indicated in this advisory, and in some elevated locations could be even greater. RAINFALL: Lala is expected to produce additional rainfall of 4 to 8 inches across the Big Island and windward Maui, with maximum storm total of 30 to 35 inches over the windward Big Island. Across the remainder of the island chain total rainfall of 4 to 6 inches, with maximum amounts of 8 inches, is expected. This rainfall will produce life-threatening flooding and mudslides, especially in areas of steep terrain. For a complete depiction of forecast rainfall associated with Lala, please see the National Weather Service Storm Total Rainfall Graphic available at hurricanes.gov/graphics_cp2.shtml?rainqpf For a list of rainfall observations and wind reports associated with Lala, see the companion storm summary at WBCSCCNS2 with the WMO header ACUS42 KWBC or at the following link: www.wpc.ncep.noaa.gov/discussions/nfdscc2.html. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Hawaii...1 to 3 ft The deepest water will occur along the immediate coast, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. For a complete depiction of areas at risk of storm surge inundation, please see the National Weather Service Peak Storm Surge Graphic, available at hurricanes.gov/graphics_cp2.shtml?peakSurge. SURF: Swells generated by Lala will continue to build westward across the exposed windward waters today. Swells will also build over the exposed leeward waters as Lala passes south of the islands. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST.