El Niño one step closer as Pacific transition now fastest in 50 years
The Pacific Ocean is undergoing its fastest transition toward El Niño conditions in 50 years, with sea surface temperatures rising rapidly since January. Climate models suggest a strong or potentially record-breaking El Niño could develop by mid-2026, increasing the likelihood of warm and dry conditions in Australia. However, experts caution that the strength of an El Niño does not always correlate with the severity of drought or heat impacts. Forecast uncertainty remains high due to the 'autumn predictability barrier,' and current long-range outlooks show only a slight increase in dry conditions for parts of Australia this winter.
- ▪Pacific Ocean temperatures in the NIÑO3.4 region have risen by over 1°C since January 2026, marking the fastest El Niño transition since 1976.
- ▪Australia's Bureau of Meteorology has not yet declared an El Niño, pending evidence of atmospheric response, though oceanic thresholds may be reached within weeks.
- ▪Despite projections of a strong or record El Niño, past events show weak correlation between El Niño strength and drought severity in Australia.
- ▪April 2026 has been exceptionally dry across much of eastern and inland Australia, with some regions experiencing their driest April in decades.
- ▪The 'autumn predictability barrier' limits forecast confidence, as small weather shifts can disrupt El Niño development, as seen in failed predictions in 2014.
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El Niño warming could be unprecedented, but don't assume record drought in AustraliaBy ABC meteorologist Tom Saunders and weather reporter Tyne LoganTopic:Weather34m ago34 minutes agoTue 28 Apr 2026 at 8:08pmThankfully for Australia, a record El Niño does not also suggest record drought or heat is on the cards. (ABC News: Che Chorley)abc.net.au/news/el-nino-pacific-transition-fastest-in-50-years/106617534Link copiedShareShare articleThe Pacific Ocean's continued rapid warming towards El Niño has firmed up the odds that Australia faces a warm and dry second half to 2026.And forecasts continue to upgrade El Niño's potential strength, with the Bureau of Meteorology's (BOM) latest modelling tipping a record event.But thankfully for Australia, a record El Niño does not suggest record drought…
Excerpt limited to ~120 words for fair-use compliance. The full article is at ABC News (Australia).