This Summer Into Winter: El Niño Chances Rise Above 80–90% Bringing Fewer Atlantic Hurricanes but Not Eliminating Risk
UNITED STATES — A new April outlook shows El Niño conditions strengthening through summer and likely continuing into winter, with probabilities rising sharply above 80% to over 90% from late summer into the end of the year. This developing pattern is expected to influence hurricane activity across the Atlantic, though it does not mean storms will be completely absent.
El Niño Probabilities Increase Rapidly Through 2026
Forecast data indicates a steady shift toward El Niño conditions:
- Around 60% chance by early summer
- Climbing to near 80% by mid-summer
- Increasing further to 90% or higher into fall and winter
At the same time, neutral conditions steadily decrease, and La Niña becomes nearly absent in the outlook.
Stronger Jet Stream Brings More Wind Shear in the Atlantic
El Niño typically leads to the development of a stronger subtropical jet stream, which increases vertical wind shear across the Atlantic basin.
This added wind shear disrupts storm formation and organization, making it harder for hurricanes to strengthen or even develop in many cases.
Fewer Atlantic Storms Expected — But Not Zero
Historically, El Niño years are associated with fewer Atlantic hurricanes, particularly across the Caribbean where wind shear is strongest.
However, the data emphasizes that storm activity does not drop to zero. Even in El Niño years, storms can still form, especially in the Gulf of Mexico and western Atlantic, where conditions may occasionally become favorable.
Warm Waters Can Still Support Storm Development
While wind shear increases, warmer ocean waters can partially offset the suppressing effects, allowing storms to develop under the right conditions.
A recent example highlighted is 2023, an El Niño year that still produced 22 named storms, showing that active seasons are still possible despite the pattern.
Season Impacts Depend on More Than Storm Count
The overall number of storms does not always determine the impact of a season. Even with fewer storms, one significant system can cause major impacts, as seen in past seasons.
The outlook suggests a potentially slower hurricane season overall, but emphasizes that risks remain and conditions can still change as the season approaches. Stay with NapervilleLocal.com for the latest weather updates and local forecast coverage.
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