Kauai News

UPDATE: Calvin no longer a tropical storm; storm continues moving west away from Hawaiʻi

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Satellite image of Tropical Storm Calvin at 10:30 a.m. July 19, 2023. (Courtesy of the National Hurricane Center)

Update at 11 a.m. July 19: According to the Central Pacific Hurricane Center at 11 a.m., Tropical Storm Calvin is no more and the tropical storm warning that was in effect for the Big Island has been canceled.

The storm is now a post-tropical cyclone. Its center is located about 255 miles west-southwest of Hilo and 240 miles south of Honolulu. The system is continuing to move west at about 20 mph.

Maximum sustained winds are near 40 mph, with higher gusts, and gradual weakening is expected until the system dissipates late Thursday. Gale-force winds still extend up to 105 miles out from the center.

Tropical storm conditions have ended in Hawaiʻi. Locally gusty winds will likely continue today before easing tonight.


As Calvin moves away from the state, additional rainfall totals of 1 to 3 inches are possible on the Big Island, with up to 2 inches possible on the other islands. 

Original story: Tropical Storm Calvin passed south of the Big Island overnight, dousing the east side of Hawaiʻi County with heavy rainfall and wind but barely affecting the Kona area.

As of 5 a.m. Wednesday, the storm is now 170 miles southwest of Hilo and continuing to move west at 20 mph with sustained maximum winds of 45 mph and higher gusts. Calvin is forecast to move well south of Kauaʻi and the rest of the Hawaiian Island, weakening during the next 48 hours and becoming a post-tropical/remnant low, according to the National Weather Service.

A Flood Advisory is in effect until 8:15 a.m. for the east side of the Big Island.


Bands of heavy rainfall will continue to move ashore and impact portions of the Big Island through the early morning hours, especially for the southeast facing slopes of the Kaʻū district.

Rainfall totals overnight have reached the 4- to 6-inch range on the Big Island and an additional 2 to 4 inches remain possible as Calvin begins to move away. Similar conditions are expected across the smaller islands today as Calvin passes far to the south.

At 4:32 a.m. on Wednesday, radar indicated heavy rain over continuing over the east through southeast slopes of the Big Island. Heavy rain was falling at a rate of 1 to 2 inches per hour in
some areas as Tropical Storm Calvin passes south of the Big Island.

A Flood Watch for the entire Big Island remains in effect.

Flood advisory map for the Big Island on Wednesday morning. (National Weather Service)

Some locations that will experience flooding include: Hilo, Hawaiian Paradise Park, Waikōloa Village, Kapaʻau, Honokaʻa, Pohakuloa Camp, Pohakuloa Training Area, Volcano, Glenwood, Mountain View, Hawaii Volcanoes National Park, Papaikou, Honomu, Pepeʻekeo, Keaʻau, Hawaiian Acres, Wood Valley, Laupahoehoe and Hakalau, according to the National Weather Service.

Precautions: Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles. Also stay away or be swept away. River banks and culverts can become unstable and unsafe.

Swells generated by Calvin will affect all of the main Hawaiian Islands through Wednesday, generating life-threatening surf and sea conditions along exposed shorelines.

High winds continue to affect parts of the Big Island. Take shelter when necessary.

[Image of probabilities of 34-kt winds]

For information about closures on Wednesday around the Big Island, click here.

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