Subtropical Storm Alberto weakened to a Subtropical Depression on Monday night, and has continued to slowly weaken this morning. The center of Alberto is currently moving through central Alabama, and the heavy rainfall threat continues. Flash Flood Watches remain in effect for portions of Alabama, Georgia, Tennessee, and Kentucky.

As of 10:00 a.m. CDT (11:00 a.m. EDT) Tuesday, Subtropical Depression Alberto was centered near 33.8°N 87.2°W, and was moving northward at about 12 mph. Maximum sustained winds were 25 knots (30 mph), with an estimated minimum pressure of 999 mb. Now that Alberto is inland and weakened to a subtropical depression, the Weather Prediction Center (WPC) has taken over advisories. WPC will continue to issue advisories on Alberto as long as it remains a flood threat to the United States. Even though Alberto has weakened as it moved inland, the structure of Alberto has become more like a tropical rather than a subtropical depression. Since late yesterday, Alberto has produced deep convection near the center – a characteristic of tropical cyclones. It is possible that Alberto may be reclassified as tropical late in its life in post-analysis.

After Alberto, none of the reliable global models develop any tropical cyclones in the Atlantic or eastern Pacific basins for the next week. This lull is to be expected, as the peak of the hurricane season is not until over three months from now.

This is my last update on Alberto. Since the tropics appear to be quiet for this week, I will be back with another post on Friday – the official start of the 2018 Atlantic hurricane season.