Weather Alerts For Koloa, HI

# HEADLINE -------------------- FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH TUESDAY AFTERNOON # SUMMARY -------------------- .Moisture along the eastern flank of Hurricane Lowell will bring periods of heavy rain to the main Hawaiian Islands late Sunday through Tuesday. # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall is possible. WHERE All main Hawaiian Islands. WHEN From Sunday evening through Tuesday afternoon. 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 - Moisture along the eastern flank of Hurricane Lowell will bring periods of heavy rain to the main Hawaiian islands late Sunday through Tuesday. Initially, the threat of heavy rain will be highest along windward and mountain areas, then the threat will spread everywhere as the winds become more southerly by Monday. - The entire state. ISSUED AT Saturday, September 5, 2026 at 3:44 PM HST ISSUED BY National Weather Service Honolulu HI HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Kahoolawe, Kauai East, Kona, Koolau Windward, Lanai Leeward, Molokai North, South Haleakala, Big Island East, Big Island Interior, Big Island North, Big Island South, Big Island Southeast, Big Island Summits, Central Oahu, East Honolulu, Ewa Plain, Haleakala Summit, Honolulu Metro, Kauai Mountains, Kauai North, Kauai South, Kauai Southwest, Kipahulu, Kohala, Koolau Leeward, Lanai Mauka, Lanai South, Lanai Windward, Maui Central Valley North, Maui Central Valley South, Maui Leeward West, Maui Windward West, Molokai Leeward South, Molokai Southeast, Molokai West, Molokai Windward, Niihau, Oahu North Shore, Olomana, South Maui/Upcountry, Waianae Coast, Waianae Mountains, Windward Haleakala

# HEADLINE -------------------- TROPICAL STORM WATCH IN EFFECT # SUMMARY -------------------- A Tropical Storm Watch means tropical storm-force winds are possible somewhere within this area within the next 48 hours - LOCATIONS AFFECTED - Poipu - Kaleheo - WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 15-25 mph with gusts to 35 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - PLAN: Plan for hazardous wind of equivalent tropical storm force. - PREPARE: Efforts to protect property should now be underway. Prepare for limited wind damage. - ACT: Act now to complete preparations before the wind becomes hazardous. - POTENTIAL IMPACTS: Limited - Damage to porches, awnings, carports, sheds, and unanchored mobile homes. Unsecured lightweight objects blown about. - Many large tree limbs broken off. A few trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Some fences and roadway signs blown over. - A few roads impassable from debris, particularly within urban or heavily wooded places. Hazardous driving conditions on bridges and other elevated roadways. - Scattered power and communications outages. - STORM SURGE - LATEST LOCAL FORECAST: Localized storm surge possible - Peak Storm Surge Inundation: The potential for 1-3 feet above ground somewhere within surge prone areas - Window of concern: Monday afternoon until Tuesday afternoon - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 1 foot above ground - PLAN: Plan for storm surge flooding greater than 1 foot above ground. - PREPARE: Efforts should now be underway to prepare for storm surge flooding, especially in low-lying vulnerable areas. - ACT: Take actions to protect life and property. Prepare to leave if evacuation orders are given for your area. - POTENTIAL IMPACTS: Limited - Localized inundation with storm surge flooding mainly along immediate shorelines and in low-lying spots, or in areas farther inland near where higher surge waters move ashore. - Sections of near-shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road. - Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong rip currents. - Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings. - FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 6-10 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for major flooding rain - PLAN: Emergency plans should include the potential for major flooding from heavy rain. Evacuations and rescues are likely. - PREPARE: Strongly consider protective actions, especially if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life. - POTENTIAL IMPACTS: Extensive - Major rainfall flooding may prompt many evacuations and rescues. - Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, arroyos, and ditches may become dangerous rivers. In mountain areas, destructive runoff may run quickly down valleys while increasing susceptibility to rockslides and mudslides. Flood control systems and barriers may become stressed. - Flood waters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. - TORNADO - LATEST LOCAL FORECAST: - Situation is favorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for several tornadoes - PLAN: Emergency plans should include the potential for several tornadoes with a few possibly intense having larger damage paths. - PREPARE: Those living in manufactured homes or on boats should prepare to relocate to safe shelter before hazardous weather arrives. - ACT: Listen for tornado watches and warnings. If a tornado warning is issued, be ready to shelter quickly. - POTENTIAL IMPACTS: Significant - The occurrence of scattered tornadoes can hinder the execution of emergency plans during tropical events. - Several places may experience tornado damage with a few spots of considerable damage, power loss, and communications failures. - Locations could realize roofs torn off frame houses, mobile homes demolished, boxcars overturned, large trees snapped or uprooted, vehicles tumbled, and small boats tossed about. Dangerous projectiles can add to the toll. - FOR MORE INFORMATION: - https://www.weather.gov/hfo # DETAILS -------------------- ISSUED AT Saturday, September 5, 2026 at 4:38 PM HST ISSUED BY National Weather Service Honolulu HI EP122026 HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Lowell Local Watch/Warning Statement/Advisory Number 40 # AREAS AFFECTED -------------------- Kauai South

# HEADLINE -------------------- HIGH SURF ADVISORY FOR SOUTH AND EAST FACING SHORES THROUGH MONDAY NIGHT HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST TUESDAY # SUMMARY -------------------- South and southwesterly swells from Hurricane Lowell will keep surf elevated above High Surf Advisory conditions across south- and west-facing shores through at least Sunday. A forecasted northward turn will cause an increase in swell, likely bringing surf along these shores rapidly to warning levels by Monday. These swells are then expected to drop off quickly on Tuesday. A large, medium- period east swell from Tropical Storm Karina will also persist through at least Monday, producing advisory level surf along east facing shores. # DETAILS -------------------- WHAT Surf up to 14 feet along east facing shores. Surf up to 12 feet along south facing shores, increasing to 14 feet by Sunday night. Surf up to 10 feet along west facing shores of the Big Island. WHERE South and east facing shores of all Hawaiian Islands... and west facing shores of the Big Island. WHEN Until 6 AM HST Tuesday. IMPACTS Moderate. Strong breaking waves and strong currents will make swimming dangerous. ADDITIONAL DETAILS The High Surf Advisory is expected to be upgraded to a warning for affected south- and west-facing shores Sunday night into Monday as surf heights are expected to rapidly rise to warning levels. ISSUED AT Saturday, September 5, 2026 at 3:57 PM HST ISSUED BY National Weather Service Honolulu HI HEADER Coastal Hazard Message # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Heed all advice from ocean safety officials. When in doubt, don't go out. Large breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. # AREAS AFFECTED -------------------- Big Island North, Big Island South, Honolulu Metro, Lanai Leeward, Maui Leeward West, Molokai Southeast, Windward Haleakala, Big Island East, Big Island Southeast, East Honolulu, Ewa Plain, Kahoolawe, Kauai East, Kauai South, Kauai Southwest, Kipahulu, Kona, Koolau Windward, Lanai South, Maui Central Valley South, Molokai Leeward South, Molokai West, Molokai Windward, Niihau, Olomana, South Haleakala, South Maui/Upcountry, Waianae Coast