One month until Atlantic hurricane season: Impacts tropical systems bring to North Alabama

HUNTSVILLE, Ala. (WHNT) — The Atlantic Hurricane Season will start on June 1 and continue through November 30.

20 named storms formed last season, placing it in the top five for most named storms in one season.

Colorado State University forecasts above-average Atlantic hurricane season

During a normal hurricane season, 14 named storms form in the Atlantic Basin, seven being hurricanes and three major hurricanes. To be considered a major hurricane, the tropical cyclone must have sustained winds of 111 mph or higher, corresponding with a Category 3 hurricane or higher.

This season is forecast to be well above average as the El Niño Southern Oscillation (EÑSO) phase transitions from El Niño to La Niña. This phase will lead to weak trade winds over the Atlantic. Weak trade winds will allow storms to strengthen, compared to strong wind shear which breaks down tropical systems.

The warm sea-surface temperatures will help fuel the tropical systems as they move across the Atlantic. Not only are the sea-surface temperatures warm, but there’s a great depth of warm water, something we call the “ocean heat content.”

Ahead of the 2024 season, Colorado State University (CSU) released its forecast for the upcoming Atlantic hurricane season.

CSU is forecasting 23 named storms to develop in the Atlantic Basin this season, 11 being hurricanes and five major hurricanes. The 23 named storms are the most CSU has ever forecast for an Atlantic season.

The National Oceanic and Atmospheric Administration (NOAA) will release its forecast in mid-May.

Tennessee Valley Impacts:

The Gulf Coast and the Atlantic Coast experience direct impacts from tropical systems. The coastal region’s main concern is the storm surge.

Here in the Tennessee Valley, the main impacts are inland flooding, flash flooding, strong winds and isolated tornadoes. Rain bands that rotate into the region are most likely produce a tornado in North Alabama.

While we don’t experience direct impacts from tropical systems here in North Alabama, it’s still important to be weather-aware. Having a plan and a safety kit ensures you are prepared for any severe weather event.

Stick with the Weather Authority team as we track anything that develops this hurricane season.

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