Hurricane Florence weakened briefly this morning, but remains a powerful Category 4 hurricane with maximum sustained winds of 130 miles per hour. The weakening can mostly be attributed to an eyewall replacement cycle or “ERC”, which occurs when the inner eye-wall of a hurricane erodes in favor of a larger, more expansive one. The good news is the temporary weakening of the storm system. The bad news is the window for additional strengthening that occurs afterward.
To make matters worse, Florence is set to enter a nearly optimal environment for strengthening later today. Anomalously warm ocean temperatures, some of the warmest in the Atlantic Ocean, lie ahead of the storm. In addition, low mid level atmospheric shear will allow the storm to properly ventilate. After the eyewall replacement cycle is complete, Florence may additionally strengthen today, perhaps approaching Category 5 status.
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