What's the difference between a hurricane making a direct hit and landfall?

Forecasts are calling for a possible direct hit on Kauai, but that does not mean the hurricane will make landfall on the island. Here is how they're different.

Hurricane Lowell could make a rare, direct hit on Hawaii, bringing heavy rain, flash flooding, gusty winds and damaging surf to the islands.

POWERFUL CATEGORY 3 HURRICANE LOWELL TRACK SHIFT COULD CAUSE RARE, DIRECT HIT ON HAWAIIAN ISLANDS

But while forecasts are calling for a possible direct hit on Kauai, that does not mean the hurricane will make landfall on the island.

So, what’s the difference?

What is a direct hit?

According to the FOX Forecast Center, a direct hit occurs when the center of a tropical cyclone passes within a distance equal to the storm’s radius of maximum winds.

That exact distance depends on which side of the storm’s track a location is on.

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For locations on the left-hand side of the storm’s track, a direct hit occurs when the center passes within a distance equal to the radius of maximum winds, but on the right-hand side, the distance is twice the radius of maximum winds.

In Lowell’s case, the islands are on the right-hand side of the track, which means the storm will qualify as a direct hit if it passes within about 90 miles. If the islands were on the left-hand side, it would require a distance of 45 miles.

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What is landfall?

A hurricane makes landfall when the center of the storm crosses the coastline. That means the center of the storm moves from the ocean onto land.

A storm does not have to make landfall to bring dangerous conditions to an area. Hurricane-force winds, flooding, storm surge and damaging surf can extend well away from the center of a hurricane.

What can Hawaii expect from Lowell?

MAJOR HURRICANE LOWELL COULD FOLLOW EERILY SIMILAR TRACK TO THE WORST HURRICANE IN HAWAII'S HISTORY

Lowell remains a powerful Category 3 hurricane, with maximum sustained winds of 115 mph, according to the National Hurricane Center (NHC).

Lowell’s track shifted farther east early Monday, bringing the storm closer to Hawaii’s western islands. The National Hurricane Center issued a Tropical Storm Warning for Oahu, the state’s most populated island. A Hurricane Warning is also in effect for Kauai County and the Papahānaumokuākea Marine National Monument.

Heavy rain associated with Lowell has already triggered flash flooding on Oahu, while damaging surf is pounding the southern shores.

Lowell is expected to bring more rain, flash flooding, gusty winds and dangerous surf across the Hawaiian Islands as it makes its closest approach late Monday into early Tuesday.

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The storm is forecast to gradually weaken as it encounters cooler waters and stronger wind shear, but it is expected to remain a hurricane during its closest approach to Hawaii.