Kona Storm Batters Maui County as Flood Watch Stays in Effect
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Kona Storm Batters Maui County as Flood Watch Stays in Effect

20 March, 2026.Technology and Science.2 sources

Key Takeaways

  • Kona storm drives flood risks across Maui County and other islands.
  • Kona storm's heavy rainfall elevates flood risk across islands.
  • Watch advisories and updates remain as conditions evolve due to Kona storm.

Storm Impacts

The storm has forced road closures, floodwater rescues, and infrastructure damage across the Hawaiian Islands.

Image from Maui Now
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The National Weather Service anticipates severe weather will persist through Sunday for Maui County.

Maui Fire Department conducted overnight rescues in Kīhei due to floodwaters.

Dozens of people are stranded in Hāna due to road washouts from the storm.

County of Maui officials continue urging residents and visitors to stay off roadways unless travel is absolutely essential.

The storm remains anchored northwest of the state producing periods of hazardous weather impacts.

This represents an extremely rare atmospheric event with back-to-back storms occurring within a short period.

Communities have had little time to recover from the previous devastating storm that affected Hawaii from March 10 to 16.

Wind Warnings

The current weather situation includes multiple active warnings across Maui County.

A High Wind Warning is in effect through 6 a.m. on Sunday for island-wide strong gusty winds.

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These winds pose particular risks to communities north and east of steep mountains.

The National Weather Service forecasts southwest winds 25 to 40 mph with gusts up to 60 mph.

A separate High Wind Warning covers the summits of Haleakalā on Maui and the Big Island summits.

Summit winds are expected to reach 55 to 75 mph with gusts up to 110 mph through 6 p.m. Sunday.

These extreme wind conditions combine with saturated ground from previous rainfall.

This combination creates heightened risks for property damage and safety hazards.

County officials emphasize that High Wind Warning criteria require winds at summits of at least 56 mph.

Residents are urged to take necessary precautions to protect property and ensure personal safety.

Storm Characteristics

These storms have significantly disrupted normal weather patterns across Hawaii.

Unlike typical trade wind patterns, Kona storms form west or northwest of Hawaii during cooler months.

They draw in warm, moisture-rich air from the subtropics and remain slow-moving.

This slow movement allows rainfall to accumulate over extended periods.

The combination of moisture and duration makes Kona storms particularly dangerous.

They can produce intense downpours, flooding, and strong winds affecting multiple islands simultaneously.

The previous storm delivered extraordinary rainfall across all major islands.

Some areas recorded up to 50 inches of rain far exceeding typical monthly averages.

Cities such as Honolulu, Hilo, and Lahaina experienced significant flooding with infrastructure damage.

Ground Saturation Risks

The already saturated ground conditions create elevated risks for flash flooding.

Soil across the islands cannot absorb much additional water after days of heavy rain.

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This leads to rapid runoff that can quickly overwhelm drainage systems.

Even moderate rainfall can trigger flooding under these saturated conditions.

Urban areas are particularly vulnerable due to blocked drains and debris accumulation.

This increases the likelihood of flash floods and property damage.

The risk of mudslides and debris flows is significantly elevated.

Saturated soil becomes unstable, especially in mountainous and hilly regions.

Additional rainfall can cause slopes to give way, sending mud and debris downhill.

These hazards can block roads, damage homes, and pose serious threats to life.

The combination of steep terrain and heavy rainfall makes Hawaii particularly susceptible.

Disruption Impacts

Transportation, tourism, and normal community activities will be affected.

Image from Maui Now
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Road travel may be affected by flooding, landslides, and damaged infrastructure.

Air travel could face delays or cancellations due to strong winds and poor visibility.

Maritime activities may be restricted as sea conditions become hazardous.

Outdoor events and tourism activities are likely to be impacted significantly.

This affects both residents and visitors who depend on these activities.

These disruptions highlight wide-ranging effects on island communities.

Tourism-dependent economies face particular challenges during severe weather.

Rainfall patterns are disrupted, affecting areas typically shielded by Hawaii's natural rain shadow.

Kona storms bring precipitation to unexpected locations where infrastructure may not be prepared.

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