Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

A storm system will shift from eastern Texas into the lower Mississippi Valley Monday with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. A Flood Watch remains in effect. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest Monday into Wednesday. Read More >

National Weather Service Forecast Office in Honolulu uses the criteria below for the issuance of High Surf Advisories and Warnings in coordination with civil defense agencies and water safety organizations in Hawai`i.

On August 2, 2021, the advisory criteria for south- and east-facing shores changed from 8 feet to 10 feet. (Service Change Notice)

All surf height observations and forecasts are for the full face surf height, from the trough to the crest of the wave.

Advisory and Warning Criteria
Location	Advisory	Warning
North-Facing Shores	15 Feet	25 Feet
West-Facing Shores - Big Island	8 Feet	12 Feet
West-Facing Shores - Remaining Islands	12 Feet	20 Feet
South-Facing Shores	10 Feet	15 Feet
East-Facing Shores	10 Feet	15 Feet

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Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

High Surf Advisory/Warning Information