News
02/07/2023, 6:06 am EST

Moderate La Nina According to Multivariate ENSO Index But Weakening Expected

The latest monthly multivariate ENSO index is -1.1 which indicates a moderate-strength La Nina remains in-place. However, as La Nina enters a 4th year, the MEI observations are following the analog of 3 previous lengthy La Nina episodes and slowly weakening on the way toward El Nino by mid-year.
02/04/2023, 10:04 am EST

Signs of El Nino are developing!

The warming of SSTA off the West Coast of South America the past 4-6 weeks has suddenly and vividly extended to the Nino12 SSTA region. The Nino12 SSTA is now +1.14C which is nearly 2C warmer than 30 days ago.
02/04/2023, 9:59 am EST

Marine Heat Wave Inspires Chile/Argentina Heat & Drought. El Nino Coming!

There is a strong tendency for amplified broad-scale upper-level high-pressure ridge areas to form across and downwind MWH episodes. No exception is the exposure South America has to this phenomenon as meteorological summer 2022-23 has produced a titanic upper-level ridge east of Argentina extending across Argentina to cause drought in that country and aggravate long-term drought in Chile.