Issue date: 2026-08-15T14:58+00:00
* LOCATIONS AFFECTED - Makakilo * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 25-35 mph with gusts to 60 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 58 to 73 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for dangerous wind of equivalent strong tropical storm force. - PREPARE: Remaining efforts to protect life and property should be completed as soon as possible. Prepare for significant wind damage. - ACT: Move to safe shelter before the wind becomes hazardous. - POTENTIAL IMPACTS: Significant - Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles. - Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Several fences and roadway signs blown over. - Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable. - Scattered power and communications outages, but more prevalent in areas with above ground lines. * FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 1-3 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for localized flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for localized flooding from heavy rain. - PREPARE: Consider protective actions if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. - POTENTIAL IMPACTS: Limited - Localized rainfall flooding may prompt a few evacuations. - Rivers and tributaries may quickly rise with swifter currents. Small streams, creeks, canals, arroyos, and ditches may become swollen and overflow in spots. - Flood waters can enter a few structures, especially in usually vulnerable spots. A few places where rapid ponding of water occurs at underpasses, low-lying spots, and poor drainage areas. Several storm drains and retention ponds become near-full and begin to overflow. Some brief road and bridge closures. * TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. * FOR MORE INFORMATION: - https://www.weather.gov/hfo
Issue date: 2026-08-15T13:55+00:00
Tropical Cyclone Lala will bring heavy rain to the Big Island and Maui County through late tonight and Oahu, Kauai, and Niihau this evening through late Sunday night. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Kauai, Niihau, and Oahu. * WHEN...From this evening through late Sunday night. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - Tropical Cyclone Lala will bring periods of heavy rain to Kauai, Niihau, and Oahu this evening through late Sunday night. Current forecast has rainfall amounts of 4 to 6 inches with local amounts up to 8 inches.
Issue date: 2026-08-15T00:18+00:00
...HIGH SURF WARNING FOR EAST FACING SHORES OF THE BIG ISLAND MAUI REMAINS IN EFFECT TONIGHT THROUGH SATURDAY NIGHT... ...HIGH SURF WARNING FOR EAST FACING SHORES OF MOLOKAI AND OAHU IN EFFECT SATURDAY MORNING THROUGH SATURDAY NIGHT... ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI IN EFFECT SATURDAY MORNING THROUGH SATURDAY NIGHT... .Medium-period swell will quickly build tonight through Saturday as Tropical Storm Lala approaches from the east. Surf peaks on Saturday several feet above the warning threshold for the Big Island and rapidly decreases Saturday night. For Maui and Molokai, surf peaks late Saturday into Saturday night near the warning threshold and rapidly diminishes by Sunday. For Oahu and Kauai, surf peaks Saturday night and diminishes Sunday morning. * WHAT...For the Big Island, dangerously large surf increasing from 8 to 12 feet tonight to 15 to 20 feet on Saturday. For Maui, dangerously large surf increasing from 7 to 10 feet tonight to 10 to 15 feet on Saturday. * WHERE...East facing shores of Oahu and Molokai and Molokai. * WHEN...From 6 AM Saturday to 6 AM HST Sunday. * IMPACTS...High. Expect very strong breaking waves and powerful currents. Waves breaking in channel entrances may make navigating the channels dangerous.