Hurricane Lowell threatened Hawaii with powerful winds, heavy rain, and dangerous surf on Monday, September 7, 2026. The Category 2 storm triggered a hurricane warning for Kauai County and Niihau, prompting emergency preparations and evacuation warnings across the western islands as forecasters tracked a dangerously close offshore path.
Powerful Hurricane Lowell bore down on the Hawaiian Islands on Monday, prompting urgent warnings from meteorologists and emergency officials as the storm’s track shifted eastward toward the western islands of Niihau and Kauai. Although earlier computer projections anticipated the system would pass harmlessly further out to sea, the storm’s tight wind field and strengthening trajectory forced widespread alerts across the state.
Governor Josh Green declared a state of emergency ahead of the severe weather, while residents across the island chain rushed to secure properties, stock up on essential supplies, and board up homes. In Lihue, supermarket shelves emptied rapidly as communities prepared for prolonged power outages and potential isolation.
Hurricane Warnings Issued for Kauai and Niihau as Storm Nears Land
The National Hurricane Center issued a formal hurricane warning covering Kauai County, which includes the islands of Kauai and Niihau, alongside portions of the Papahanaumokuakea Marine National Monument. Forecasters noted that while Lowell weakened slightly from its previous peak as a major Category 3 system, it maintained maximum sustained winds of 110 to 115 miles per hour, retaining enough strength to cause extensive structural damage as it moved north-northeast.
National Weather Service meteorologist Derek Wroe explained the mechanics driving the storm’s current path during a briefing with reporters and local outlets.
Wroe added that the storm’s forward speed was increasing as it approached its closest point of contact with the island chain.
Concurrently, a tropical storm warning was extended to Oahu, where tropical-storm-force winds between 39 and 73 miles per hour were anticipated within hours of the initial alert according to regional weather updates. Forecasters warned that wind gusts could easily knock down tree branches and disrupt local power distribution grids across Oahu while heavy rainfall began lashing coastal highways.
Torrential Rainfall and Flash Flood Threats Across the Island Chain
The National Weather Service established a flood watch for all Hawaiian islands, warning that an extensive shield of deep tropical moisture would produce widespread, heavy downpours. Kauai County faced the most severe precipitation projections, with forecasters estimating baseline totals between 6 and 10 inches and isolated interior mountain ranges potentially receiving over 15 inches of rain as storm bands anchored over steep terrain.
Other islands experienced similar threats, with the Big Island anticipating 4 to 8 inches of rain with localized totals reaching 12 inches, while Oahu and Maui County braced for similar accumulations accompanied by an elevated risk of mudslides.
| Island / Region | Expected Rainfall Range | Potential Maximum Rainfall |
|---|---|---|
| Kauai County | 6 to 10 inches | Up to 16 inches |
| Big Island | 4 to 8 inches | Up to 12 inches |
| Oahu & Maui County | 4 to 8 inches | Up to 10 inches |
Emergency management officials stressed that the combination of intense rainfall and saturated soils created a dangerous environment for rapid flash flooding. The Kauai Emergency Management Agency advised residents to ensure vehicles had full tanks of gas, keep personal communication devices charged, verify prescription inventories, and prepare to remain confined to their homes for multiple days while conditions remained hazardous.
Dangerous Surf, Coastal Inundation, and Tornado Warnings
Beyond high winds and inland flooding, coastal communities faced severe marine hazards. High Surf Warnings spanned the south-facing shores of all islands alongside west-facing shores on the Big Island.
Storm surge added further complications to coastal zones. Forecasters estimated that Kauai County would experience water levels rising 1 to 4 feet above normal ground level, depending on the timing of peak afternoon high tides that threatened major wave run-up and low-lying inundation. The National Hurricane Center also cautioned that convective bands rotating around the center of the hurricane carried enough rotational energy to spawn multiple brief tornadoes across Kauai and Niihau through Monday night.
As conditions continued to deteriorate into Monday evening, Wroe urged anyone remaining within active warning zones to finalize all protective measures immediately.
Wroe emphasized the urgency facing local populations as the core of the storm made its closest approach to the western Hawaiian archipelago.
“Things will be rapidly deteriorating as the afternoon and evening go along. So, if you’re in the warning area, we really urge people to rush to completion any preparation that they have.”
Derek Wroe, National Weather Service meteorologist via SFGATE
Meteorologists expect Lowell to maintain hurricane intensity as it clears the island chain before beginning a northward acceleration and subsequent weakening trend by Tuesday evening.
Worth a look