Hurricane Lowell Batters Kauai and Niʻihau: What's Happening in Hawaii Right Now
As of the 2:00 AM HST advisory this morning, Hurricane Lowell was passing just north-northwest of Niʻihau as a strong Category 2 storm with maximum sustained winds of 105 mph. The Central Pacific Hurricane Center's advisory is direct: damaging winds, heavy rainfall, and powerful waves are still impacting Kauai County right now, and conditions are not expected to improve on the western islands until later Tuesday.
Where the storm is and where it's headed
Lowell's core moved just west of Niʻihau overnight and is now tracking north at roughly 18 mph. A Hurricane Warning remains in effect for Kauai County, including the islands of Kauai and Niʻihau, plus the Papahānaumokuākea Marine National Monument from Nihoa to French Frigate Shoals. A Tropical Storm Warning remains up for Oʻahu, per the National Weather Service Honolulu.
The storm's central pressure sits at 963 millibars, and hurricane-force winds extend outward up to 70 miles from the center according to CBS News reporting from Monday. Even though Lowell's center never made landfall, its proximity to Kauai has already produced serious damage.
What's already been reported
- Widespread power outages on Kauai. According to CNN reporting overnight, roughly 90% of homes and businesses in Kauai County lost power as hurricane-force gusts arrived. Wind gusts have hit 87 mph in Nawiliwili and 84 mph in Lihue.
- Downed trees and debris across the island. Kauai officials are urging residents to stay in place through the morning. The Hawaiʻi Emergency Management Agency confirmed several thousand customers reporting outages and warned that dangerous winds would persist into the early morning.
- Nearly a foot of rain in Kauai's higher elevations. CNN's Monday coverage noted totals approaching 12 inches at higher elevations, with coastal areas measuring up to 5 inches as of Monday evening.
- Extreme surf, 20 to 30 feet. The NWS High Surf Warning covers south-facing shores of all Hawaiian islands and west-facing shores of the Big Island. Storm surge of 1 to 4 feet on top of that surf is expected to produce major wave runup and coastal inundation, especially on Kauai and Niʻihau.
What flooding looks like in a storm like this
Hurricane Lowell is a textbook example of what makes Hawaiian storms unusually dangerous: the terrain concentrates rainfall. Trade winds forced up mountainsides squeeze moisture out at a much higher rate than the same storm would produce on flat coastal terrain. When higher elevations catch a foot of rain in a day, that water has to go somewhere — typically down through steep gulches and stream drainages toward populated coastal areas, where flash flooding, landslides, and debris flows follow.
Every homeowner in a storm-exposed part of Hawaii already knows this pattern. The question during a system like Lowell is not whether the water is coming, but which side of the ridge it comes down and how fast.
Why traditional sandbags have been in short supply
Sand-based flood barriers are the historical default in Hawaii, but they carry a well-known logistics problem during island storms: sand supply chains break down first. Every county public-works yard has a limited stockpile, and once wind and rain start, filling and moving bags is dangerous and slow. During Lowell's approach, several Kauai residents reported to local news outlets that filled bags were unavailable at their nearest distribution point.
StormBag was engineered for exactly this shortfall. Each bag is a burlap sack containing a super-absorbent polymer core. Dry, it weighs about one pound; hydrated with fresh water, it expands to more than 33 pounds and blocks water like a traditional sandbag — without needing sand, a shovel, or a truck. Bags activate in about five minutes when soaked in a bucket, trough, or tote of fresh water, and can be positioned by a single person. Once hydrated, StormBags will hold back both fresh and salt water; note that they must be initially hydrated with fresh water and cannot be activated in salt water.
If you're preparing for future storms in Hawaii, the 10-pack and 25-pack boxes ship flat, take up minimal storage space, and stay shelf-stable for years, making them practical for households, businesses, and property managers who need to keep flood protection ready without a warehouse.
Track the storm and future systems
Hawaii's 2026 hurricane season is not over. Historically, the peak of Central Pacific activity runs from mid-August through October, and NOAA has been signaling an active pattern for the remainder of the season. Bookmark StormBag's Flood Watch tool for real-time alerts on active NWS flood warnings anywhere in the United States, and monitor the National Hurricane Center's Central Pacific advisories for storm updates.
How to figure out what you need
If you're evaluating StormBag for your property, our sandbag calculator takes your door or garage opening width and the flood height you want to hold back, and returns the exact number of bags needed plus the right kit for the job. It's the fastest way to figure out whether you need a small 10-pack for one door or a full multi-kit deployment for a property with multiple openings.
Sources: NOAA National Hurricane Center, National Weather Service Honolulu, Hawaiʻi Emergency Management Agency, CNN, CBS News. Featured image: NOAA National Hurricane Center 3-day forecast cone.
