2025 Atlantic Hurricane Season Outlook

Date: February 24, 2025

Sources:

• "5 things Bryan Norcross is watching for the 2025 hurricane season" - Fox Weather
• "New NOAA system ushers in next generation of hurricane modeling, forecasting" - NOAA
• "After predicting 'hurricane season from hell,' forecaster is back for '25" - Chron.com

Executive Summary:

The 2025 Atlantic hurricane season is approaching, with the official start on June 1st. Forecasters are closely monitoring several factors that will influence the season's activity. While early predictions suggest a potentially less active season than the disastrous 2024 season, unusually warm Caribbean waters and other unpredictable elements mean coastal communities should remain vigilant. New forecasting technologies, like NOAA's HAFS model, promise improved accuracy in predicting storm intensity and track, offering more lead time for preparedness.

Key Themes and Ideas:

1. Seasonal Predictions and ENSO:

• ENSO-Neutral Conditions: Current outlooks suggest a likely ENSO-neutral phase, meaning neither El Niño nor La Niña will dominate. Historically, ENSO-neutral years have produced varying levels of hurricane activity. "Forecasters are still analyzing the potential development of an El Niño or La Niña event for the upcoming season, but current outlooks suggest that the year will likely fall within an ENSO-neutral phase, meaning neither El Niño nor La Niña conditions are expected to dominate."
• Spring Predictability Barrier: Forecasting ENSO conditions this time of year is difficult due to weak trade winds over the Pacific. "What that means is that this time of year and up into about March and maybe even April, it becomes very difficult and forecasts for whether it's going to be an El Niño or La Niña are much less reliable."
• WeatherBell's Forecast: After accurately predicting a severe 2024 season, WeatherBell Analytics forecasts a less impactful 2025 season with 15-19 named storms, 7-9 hurricanes, and 2-3 major hurricanes. They suggest "fewer impacts" and "no clear landfall signals" unlike last year.

1. Sea Surface Temperatures:

• Warm Caribbean Waters: Above-average temperatures in the Caribbean Sea raise concerns about potentially more intense hurricanes if storms enter that region. "The Caribbean is extremely warm. That suggests that if we get a storm, like Beryl, forming in the region, we could see an unusually strong system this year," said Norcross.
• Gulf and Western Atlantic: Water temperatures in the Gulf and western Atlantic fluctuate but can still provide fuel for developing systems.
• Cooler Atlantic: WeatherBell forecasters say that cooler conditions in the Atlantic favor a weaker season overall. "The Atlantic is much cooler than last year, and the swath of warmer water is shown to the north. This suggests less Main Development Region activity, but the worry have its share of issues."