The center of Ian will reach the coast of South Carolina today, and then move farther inland across eastern South Carolina and central North Carolina tonight and Saturday. There is a danger of life-threatening storm surge along the coasts of northeast Florida, Georgia, and the Carolinas today. Hurricane-force winds are expected along the coasts of South Carolina and southeastern North Carolina. Read More >
The Weather Risk Outlook colors are determined by NWS Seattle meteorologists examination of both the impact level of potential weather scenarios AND the associated probability of those scenarios. The resulting outlook displays the highest risk for each day.
NWS Seattle meteorologists first use the impact table to determine the level of impact expected with a forecast weather event.
NWS Seattle meteorologists then determine the color by determining the probability of occurance using all the available information then reference the matrix to determine the risk level associated with the forecast weather event.
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