Two La Niñas on record occurred two years after an El Niño, with a neutral year in between.
Notes on verification
Supported by Smithsonian/NOAA sources describing ENSO transition patterns and 'double-dip' La Niña events, but the exact statistic (14 La Niñas, two after a neutral gap year) could not be independently cross-verified against the original NOAA blog data. [tier=bronze indep_score=0.539 clusters=2 claim_tier=notable]
Sources
- Say Goodbye to a Historic El Niño and Hello to La Niña (seed:science_and_space)
- https://www.climate.gov/news-features/blogs/enso/double-dipping-why-does-la-ni%C3%B1a-often-occur-consecutive-winters (corroboration)
- https://www.noaa.gov/news/double-dip-la-nina-emerges (corroboration)