(KALB) - During a roughly eight-week stretch of the Atlantic Hurricane Season, between mid-August through mid-October, the activity of tropical systems in the Atlantic Ocean spikes.
This two-month stretch is in the middle of the overall season which runs from June 1st through November 30th.
During the peak season, the activity spikes accounting for 78% of the Tropical Storm days, 87% of the category 1 and category 2 hurricane days, and a whopping 96% of the major hurricane days (category 3, 4, and 5).
What makes for the peak season to happen later on in the season is the fact that the environment is different. The factors, being dynamical (wind factors) and thermodynamical (temperatures and moisture) all play a role in the formation of tropical systems.
When these dynamical and thermodynamical factors are in sync, as they often are during the peak months of mid-August to mid-October, disturbances that come off of the African coast can easily strengthen. Also during the peak months, the overall wind shear tends to be lower than during the beginning couple months of each season. Along with this lowered wind shear, combined with favorable thermodynamics of increased ocean temperatures, warmer air temperatures and increased amounts of atmospheric moisture are all key players to increased tropical activity each Atlantic Hurricane Season.
Now, we just past the peak day, roughly September 10th through September 12th and this 2017 Atlantic Hurricane Season has certainly been an active one, along with being a devastating one as well with Hurricane Harvey and Hurricane Irma leaving paths of destruction and devastation to parts of the Southeastern United States and Caribbean Islands.
So if you ever wonder why the peak hurricane season in the Atlantic Ocean is during mid-August through mid-September, you now know the factors that play a role in the increased activity each season!
Source: National Oceanic and Atmospheric Adminstration (NOAA)