20 30-YEAR AVERAGE Named Storms 14.4 Hurricanes 7.2 Named Storm days 69.4 Major Hurricanes 3.2 Hurricane Days 27 Major Hurricane Days 7 Caribbean Landfall 47% APRIL 23 JUNE 23 11 115 5 45 13 66% 11 115 5 45 13 66% CHANGE - APRIL TO JUNE NONE NONE NONE NONE NONE NONE NONE • Continued from previous page CSU UPDATED FORECAST PUBLISHED ON JUNE 11, 2024 “We have maintained our forecast for an extremely active Atlantic hurricane season in 2024. We anticipate that La Niña conditions will develop by the peak of the Atlantic hurricane season, likely resulting in reduced levels of tropical Atlantic vertical wind shear. Sea surface temperatures averaged across the hurricane Main Development Region of the tropical Atlantic and Caribbean remain at record warm levels. Extremely warm sea surface temperatures provide a much more conducive dynamic and thermodynamic environment for hurricane formation and intensification. This forecast is of above-normal confidence for an early June outlook. We anticipate a well above-average probability for major hurricanes making landfall along the continental United States coastline and in the Caribbean. As with all hurricane seasons, coastal residents are reminded that it only takes one hurricane making landfall to make it an active season. Thorough preparations should be made every season, regardless of predicted activity”. SOURCE: Department of Atmospheric Science, Colorado State University, Fort Collins Colorado SOURCE: Forecasts of storms (yellow) and hurricanes (red) in April outlooks from Colorado State University from 1996 through 2024. This year's record April forecast is highlighted by the dotted white arrows. (Data: CSU; Graph: Infogram) • Continues on next page
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