The 2026 Atlantic #hurricane season continues to be remarkably quiet, generating the least Accumulated Cyclone Energy (ACE) of any Atlantic hurricane season through September 16 since 1950. ACE is an integrated metric accounting for storm intensity and duration. #ElNino

The 2026 Atlantic #hurricane season has still had zero hurricanes. The last time an Atlantic hurricane season went past 11 September before its 1st hurricane was in 1941.

NOAA has officially declared that #ElNino is underway. They've recently published a great blog: climate.gov/news-features/bl…

Latest NOAA ENSO forecast gives a 51% chance of #ElNino for the peak of the Atlantic #hurricane season (August-October). El Nino typically reduces Atlantic hurricane activity via increases in vertical wind shear. Too much shear tears apart hurricanes.

NOAA has updated their Atlantic seasonal #hurricane outlook, reduces numbers slightly but continues to call for above-normal season: 14-20 named storms 6-10 hurricanes 3-5 major hurricanes 110-190% of median Accumulated Cyclone Energy

The latest weekly Nino 3.4 sea surface temperature anomaly is -1.1°C, the coldest April weekly anomaly in this region since 1999. #LaNina looks to be holding strongly for the time being. The Nino 3.4 region is a box that NOAA monitors for classifying the state of ENSO.

Tropical Storm #Sam has formed in the eastern tropical Atlantic - the 18th named storm of the 2021 Atlantic #hurricane season to date. Only 1 season on record has had 18+ Atlantic named storms by 23 September: 2020. 2020 had 23 named storms by 23 September.