Active Weather Alerts
Flash Flood Warning
Issued: 7:39 AM Sep. 8, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM HST THIS EVENING FOR THE ISLAND OF KAUAI IN KAUAI COUNTY... At 939 PM HST, Doppler radar indicated heavy rain over Kauai. Rain was falling at a rate of 1 to 2 inches per hour. Substantial rises have been observed at the Wainiha River, Waialae Stream, Hanapepe River, and Kawaikoi Stream gages. The Waimea River continues to steadily rise. In addition, water levels at the Hanalei River Bridge on Kuhio Highway have sharply risen during the last hour. Rises on other area rivers and streams can also be expected as heavy rain continues. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Gauges reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... The island of Kauai. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. && FLASH FLOOD...GAUGE INDICATED
Tropical Weather Statement
Issued: 6:19 AM Sep. 8, 2026 – National Weather Service
This product covers the Hawaiian islands **DANGEROUS CONDITIONS EXPECTED FOR NIIHAU, KAUAI, AND OAHU, WITH FLASH FLOODING DAMAGING WAVES AND HIGH WINDS EXPECTED FROM LOWELL** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - None * CURRENT WATCHES AND WARNINGS: - A Hurricane Warning is in effect for Kauai East, Kauai Mountains, Kauai North, Kauai South, Kauai Southwest, and Niihau - A Tropical Storm Warning is in effect for Central Oahu, East Honolulu, Ewa Plain, Honolulu Metro, Koolau Leeward, Koolau Windward, Oahu North Shore, Olomana, Waianae Coast, and Waianae Mountains * STORM INFORMATION: - About 140 miles west-southwest of Lihue or about 210 miles west of Honolulu - 20.9N 161.1W - Storm Intensity 110 mph - Movement North-northeast or 25 degrees at 18 mph SITUATION OVERVIEW ------------------ Hurricane Lowell continues to move toward the north-northeast and near the state. As the center of Lowell passes west of Niihau tonight, expect damaging winds, heavy flooding rainfall, and extremely dangerous and damaging surf to occur over portions of the Hawaiian Islands and possibly persist into Tuesday morning. A Hurricane Warning remains in effect for Kauai and Niihau, and a Tropical Storm Warning is in effect for Oahu. Storm preparations should be complete. Damaging winds are now occurring on Kauai and Niihau and may spread to Oahu through the night. Several stations on southern Kauai, including Lihue Airport are reporting sustained winds of 30 to 40 mph, with gusts as high as 65 mph. Hurricane conditions are expected over portions of Kauai County, with the highest probability of hurricane force winds occurring on Niihau tonight. It is important to note that winds can be accelerated over and downwind of terrain, leading to areas of stronger wind gusts. As winds shift to south overnight, areas affected by downslope wind gusts will likely change. The threat of heavy rain will increase considerably tonight. Heavy downpours could lead to flash flooding and mudslides, especially in steep terrain, and rainbands could become persistent and anchored in some areas, exacerbating the flash flood threat. The risk of flash flooding is greatest for Kauai and Niihau, where many stations have measured 2 to 7 inches of rain today. The flood threat also exists for all other islands due to deep moisture surrounding Lowell. Over 20 inches of storm total rain is possible over portions of Kauai, mainly over the interior mountains, and up 12 inches remains possible over southeast Big Island. An extremely large south to southwest swell generated by Lowell will continue to rapidly build through the evening and peak tonight. A High Surf Warning is in effect for south-facing shores of all islands and for west-facing shores of the Big Island. Dangerously large and damaging surf and coastal inundation are expected along the immediate coast of exposed south and west-facing shores, particularly on Kauai and Niihau and possibly Oahu. The highest surf may reach 20 to 30 feet on Kauai and Niihau tonight, then rapidly diminish on Tuesday. Extra large surf, on top of 1 to 4 feet of storm surge, will generate major wave run-up and coastal inundation along exposed low lying areas of south and west-facing shores, particularly for Kauai and Niihau and possibly for Oahu. Conditions will be conducive for fast-moving, short-lived waterspouts and tornadoes in the rainbands associated with Lowell, mainly near Kauai and Niihau. This threat will continue through tonight, then diminish quickly Tuesday morning. POTENTIAL IMPACTS ----------------- * WIND: Potential impacts from the main wind event are now unfolding across Kauai and Niihau. Remain well sheltered from life-threatening wind impacts. If realized, these impacts include: - Structural damage to sturdy buildings, some with complete roof and wall failures. Complete destruction of mobile homes. Damage greatly accentuated by large airborne projectiles. Locations may be uninhabitable for weeks or months. - Numerous large trees snapped or uprooted along with fences and roadway signs blown over. - Many roads impassable from large debris, and more within urban or heavily wooded places. Many bridges, causeways, and access routes impassable. - Widespread power and communications outages. Potential impacts from the main wind event will develop across Oahu this evening. Remain well sheltered from wind having limited to extensive impacts. Elsewhere across the Hawaiian islands, little to no impact is anticipated. * FLOODING RAIN: Potential impacts from the flooding rain are unfolding across Kauai and Niihau. Remain well guarded against life-threatening flood waters having extensive impacts. If realized, these impacts include: - 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. Potential impacts from the flooding rain are unfolding across the rest of the State of Hawaii. Remain well guarded against dangerous flood waters having significant impacts. * SURGE: Potential impacts from the main surge and damaging surf event are now unfolding across Kauai and Niihau. Remain well away from life-threatening surge and extremely large surf having significant impacts. If realized, these impacts include: - Areas of inundation with storm surge flooding accentuated by waves. Damage to several buildings, mainly near the coast. - Sections of near-shore escape routes and secondary roads become weakened or washed out, especially in usually vulnerable low spots. - Major beach erosion with heavy surf overtopping nearby roadways. - Moderate damage to marinas, docks, and piers. Several small craft broken away from moorings, especially in unprotected anchorages. Elsewhere across the Hawaiian islands, very large surf may produce coastal inundation and some impacts to shoreline infrastructure. * TORNADOES: Potential impacts from tornadoes are unfolding across Kauai and Niihau. Remain well braced against a dangerous tornado event having possible significant impacts. If realized, these impacts include: - 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. Prepare for a tornado event having possible limited impacts across the rest of the State of Hawaii. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: Follow the advice of local officials * OTHER PREPAREDNESS INFORMATION: Now is the time to stay inside and away from windows. Listen for updates and be ready in case you lose electrical power. Keep a battery-powered radio, charged cell phone and flashlight handy. During the peak of the storm be ready to move quickly. Keep your shoes on and rain gear handy. Boots and athletic shoes offer the best foot protection if you become unexpectedly exposed to the weather. Failure to adequately shelter may result in serious injury or loss of life. Always heed the advice of local officials and comply with any orders that are issued. Remember, during the storm 9 1 1 Emergency Services may not be able to immediately respond if conditions are unsafe. This should be a big factor in your decision making. If you are a visitor, be sure to know the name of the city or town in which you are staying and the name of the county or parish in which it resides. Listen for these locations in local news updates. Pay attention for instructions from local authorities. Keep your cell phone charged and in power-saving mode. If you lose power, use it sparingly and mainly for personal emergencies and check-ins. If you are prone to flooding be prepared for the possibility of a quick and dramatic rise in water levels. If a tornado warning is issued for your area, quickly move to the safest place within your shelter. Protect your head and body. * ADDITIONAL SOURCES OF INFORMATION: - For information on appropriate preparations see ready.gov - For information on creating an emergency plan see getagameplan.org - For additional disaster preparedness information see redcross.org NEXT UPDATE ----------- The next local statement will be issued by the National Weather Service in Honolulu HI around 12 AM HST, or sooner if conditions warrant.
Hurricane Warning
Issued: 6:15 AM Sep. 8, 2026 – National Weather Service
...HURRICANE WARNING REMAINS IN EFFECT... * LOCATIONS AFFECTED - Kilauea - Haena - Polihale * WIND - LATEST LOCAL FORECAST: Equivalent Cat 1 Hurricane force wind - Peak Wind Forecast: 55-75 mph with gusts to 120 mph - Window for Tropical Storm force winds: until late Tuesday morning - Window for Hurricane force winds: until Tuesday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 74 to 110 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for life-threatening wind of equivalent CAT 1 or 2 hurricane force. - PREPARE: Last minute efforts should solely focus on protecting life. The area remains subject to considerable wind damage. - ACT: Now is the time to shelter from life-threatening wind. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main wind event are unfolding. * 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: through early Wednesday morning - 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 - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Shelter against storm surge flooding greater than 1 foot above ground. - PREPARE: All flood preparations should be complete. Expect flooding of low-lying roads and property. - ACT: Stay away from storm surge prone areas. Continue to follow the instructions of local officials. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main surge event are unfolding. * FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 3-6 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 - The flooding rain threat has remained nearly steady from the previous assessment. - 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: Tornado Watch is in effect - Situation is favorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for several tornadoes - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should continue to include the potential for several tornadoes. - PREPARE: Stay within your shelter keeping informed of the latest tornado situation. - ACT: Move quickly to the safest place within your shelter if a tornado warning is issued. - 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
Tropical Storm Warning
Issued: 2:57 AM Sep. 8, 2026 – National Weather Service
...TROPICAL STORM WARNING REMAINS IN EFFECT... * WHAT...Tropical storm conditions expected. Winds increasing to 30 to 50 kt with gusts up to 60 kt tonight. Seas 15 to 27 feet. Winds and seas will decrease tomorrow. * WHERE...Kauai Windward Waters, Kauai Channel, Oahu Windward Waters and Oahu Leeward Waters. * WHEN...Until Tuesday afternoon. * IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. &&
Tornado Watch
Issued: 2:13 AM Sep. 8, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 1 IN EFFECT UNTIL 4 AM HST TUESDAY FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS KAUAI NORTHWEST WATERS KAUAI WINDWARD WATERS KAUAI LEEWARD WATERS KAUAI CHANNEL A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Tornado Watch
Issued: 2:13 AM Sep. 8, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 1 IN EFFECT UNTIL 4 AM HST TUESDAY FOR THE FOLLOWING AREAS IN HAWAII THIS WATCH INCLUDES 1 COUNTY KAUAI THIS INCLUDES THE CITIES OF LIHUE. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Flood Watch
Issued: 1:23 AM Sep. 8, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY AFTERNOON... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Kauai and Niihau. * WHEN...Through Tuesday afternoon. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. * ADDITIONAL DETAILS... - As the center of Hurricane Lowell passes west of the islands, deep moisture associated with its inner rainbands will spread across Kauai and Niihau where significant rainfall has already fallen. These additional periods of heavy rain can quickly lead to additional flash flooding. - Kauai and Niihau. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
Local Radar