Tropical Weather

Tropical Storm Bertha forms--and sets a record

Tropical Storm Bertha is here. Overnight, a significant amount of heavy thunderstorm activity built up around the center, aided by Sea Surface Temperatures (SSTs) about 26°C (1°C above average for this date). This temperature is right at the threshold of where tropical storms can form. Also aiding the storm is 5-10 knots of wind shear. Bertha has good organization and a favorable environment for intensification, and should continue to slowly intensify today. There ...

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