An important marker in #ElNiño development, as the 3.4 value crosses the 0.5 threshold. Obviously we have a ways to go before the three-month averages officially reach #ElNiño status, but with lots of subsurface heat and WWBs coming, it's only a matter of time. pic.twitter.com/BIXoWNn3jn

— Andy Hazelton (@AndyHazelton) May 15, 2023