Kona Storm Risk: Hurricanes, Tsunamis, and the Island's Volcanic Context

Hurricane Season Is Real; Direct Kona Landfalls Are Historically Rare

The Central Pacific hurricane season, covering Hawaii, runs officially June 1 through November 30, tracked for the islands by NOAA's Central Pacific Hurricane Center (CPHC) in Honolulu. Storms form in or move into the basin most years, but a direct, damaging landfall on any specific Hawaiian coastline -- Kona included -- has historically been uncommon, largely because the islands present a small target in a vast ocean and storms frequently weaken or curve away before striking directly. The most significant recent direct hit on Hawai'i Island itself was Hurricane, later Tropical Storm, Iselle, which made landfall in the Puna District on August 8, 2014 -- described by multiple sources as the strongest tropical cyclone to make landfall on Hawai'i Island in recorded history. Puna sits on the wet, windward east side of the island, roughly 25 minutes south of Hilo -- not on the Kona coast. Damage there was real and significant: about 250 homes damaged in a district home to more than 40,000 people, roughly $66 million in total damage, and nearly five weeks to fully restore power island-wide. This page does not borrow Puna's Iselle history and present it as Kona's own -- it happened on a different part of the same island, under different topography and different exposure.

That said, Kona is not storm-proof, and this research pass turned up a genuinely current, live example worth noting rather than glossing over: as of mid-August 2026, a tropical storm/hurricane warning was active for Hawai'i Island, with forecasts putting Kailua-Kona, Captain Cook, and Miloli'i-area winds in the 35-45 mph range with gusts up to 70 mph. This is presented here as a real, recent illustration that the Kona coast does experience tropical cyclone effects -- strong wind, heavy rain -- even without a confirmed direct, catastrophic landfall of Iselle's magnitude specifically on this side of the island historically. Storm conditions and forecasts change quickly; anyone reading this page for current, actionable storm information should go directly to the National Weather Service and Hawaii County Civil Defense rather than relying on a snapshot from this research pass.

'Kona Storms' Are a Separate, Non-Tropical Weather Phenomenon -- Don't Confuse the Two

One genuine point of confusion worth clearing up directly: Hawaii weather terminology includes a phenomenon called a 'Kona storm' or 'Kona low,' and it is not a tropical cyclone. A Kona storm is a non-tropical winter weather system that develops when Hawaii's normal, sheltering northeast trade winds break down, allowing wind and rain to approach from the south or southwest -- the 'Kona' (leeward) direction -- rather than the typical windward pattern. Because Kona's coast is normally sheltered from wind and rain by its leeward position relative to the trade winds, it can be more exposed than usual specifically during one of these Kona-storm events, even though the mechanism has nothing to do with a hurricane or tropical storm. This page does not use 'Kona storm' as a synonym for hurricane risk, and readers should not either -- they are different weather phenomena with different seasons, different causes, and different appropriate preparation.

Tsunami Risk Is Real, Well-Documented, and Includes a Kona-Specific Event

Separate again from both tropical cyclones and Kona storms: Hawai'i Island has a substantial, well-documented tsunami history, generated by earthquakes rather than weather systems. The April 1, 1946 tsunami, triggered by an Aleutian Islands earthquake, is the founding event behind the modern Pacific Tsunami Warning Center, headquartered in Hawaii as a direct result. The May 23, 1960 tsunami, generated by the magnitude-8.3 Chile earthquake, struck Hilo Bay with waves reaching an estimated 35 feet, killing 61 people and causing roughly $23 million in damage, destroying or damaging more than 500 homes and businesses in the Hilo Bay area -- both of these are primarily documented as Hilo-side events on the island's east coast, not Kona-specific history, and this page does not claim otherwise.

The event that is directly, specifically relevant to Kona is different: the magnitude-7.7 Kalapana earthquake of November 29, 1975, whose resulting tsunami reportedly flooded Ali'i Drive, Kailua-Kona's main waterfront street, per multiple historical retrospectives -- alongside separately documented damage to docks, piers, and homes in Punalu'u, further south on the island. Total damage from the earthquake and tsunami combined is cited at roughly $4.1 million (about $1.4 million of that tsunami-specific), with a peak wave estimated near 48 feet at Halapē, east of Kona. This is real, sourced, Kona-relevant tsunami history -- not borrowed from Hilo's better-known events -- and it's the reason this page treats tsunami risk as a genuine, location-specific consideration for a Kona coastal property, not an abstraction that only applies to the other side of the island.

Volcanism: Real and Significant on the Island, Geographically Distant From Kona

Hawai'i Island carries a hazard no other Hawaiian island shares at the same scale: active, ongoing volcanism, most visibly at Kilauea, one of the most active volcanoes on Earth. This is not historical color -- it is real, current, and genuinely significant. The 2018 lower Puna eruption is the benchmark event: a real, well-documented disaster that destroyed hundreds of homes across the Leilani Estates and Kapoho areas in the Puna District over several months of active eruption, one of the most consequential natural disasters in recent Hawai'i Island history. That eruption, and Kilauea's ongoing eruptive activity more generally, is geographically located on the island's east side and southeast rift zone -- not in Kona, and not close to it in the way a buyer might assume from 'same island' alone. This page states that distinction plainly rather than either exaggerating Kona's volcanic risk by implication or omitting Kilauea's real history to make the Big Island sound uniformly low-risk.

Kona's own position relative to island volcanism is meaningfully different: Kailua-Kona sits mostly within USGS Lava Flow Hazard Zone 4, on the flanks of Hualalai, a volcano whose documented eruption frequency and recent lava coverage are substantially lower than Kilauea's or Mauna Loa's -- roughly 5% of Zone 4 has been covered by lava since 1800, and less than 15% within the past 750 years, per USGS's own zone criteria. Zone 4's lower risk designation is real enough that mortgage lenders generally do not require separate lava-hazard insurance for properties in it, unlike the higher-numbered, higher-risk zones on the island's east and south sides where the 2018 Puna eruption occurred. None of this means zero volcanic risk for Kona -- it means meaningfully lower, well-documented, and geographically distinct risk from the island's more actively erupting side, and it's worth understanding both halves of that sentence rather than just one.

What This Means for a Buyer

The honest summary: Kona sits inside a real Central Pacific hurricane season, June through November, with a historically rare direct-hit record on this specific coast but genuine recent evidence (as of this research pass) that tropical storm conditions do reach the area. Separately, Kona experiences 'Kona storms' -- a non-tropical, winter, wind-and-rain phenomenon that shares the name but not the mechanism with tropical cyclones. Separately again, Hawai'i Island carries real, well-documented tsunami risk with at least one confirmed Kona-specific event (the 1975 Kalapana tsunami's reported flooding of Ali'i Drive). And separately still, the island carries genuine, ongoing, significant active volcanism at Kilauea, whose real and serious 2018 disaster history belongs to the Puna District on the island's east side -- while Kona itself sits in a lower, USGS-documented lava-hazard zone on a different, less frequently active volcano.

Nothing on this page is emergency-management or insurance advice. Before buying, confirm a specific property's tsunami evacuation zone directly with Hawaii County Civil Defense or the state's GIS program, ask a Kona-based agent about tropical storm and Kona-storm history for that specific area, confirm the property's USGS lava flow hazard zone directly rather than assuming Zone 4 applies to every Kona parcel, and talk to a licensed Hawaii insurance professional about current windstorm, flood, and named-storm coverage -- Hawaii's property insurance market has been through real, documented instability in the past two years, and coverage terms shift faster than a page like this can track.