News
08/28/2024, 5:15 am EDT

Strengthening MJO/SOI Causal to Sudden La Nina Trend

The persistent +SOI, enhanced by MJO, is causing eastern equatorial Pacific trade winds to increase. Subsurface cool waters in the equatorial Pacific are beginning to up-well to the surface. The Nino34 SSTA is now -0.13C after dropping 0.27C during the past 7 days.
08/25/2024, 11:48 am EDT

Explaining The U.S. Summertime Warm Bias in U.S. Medium-range Forecasts

Dynamic models and to a degree AI outlooks have produced consistent too warm medium-range forecasts in the U.S. during summer 2024. The most likely issue with dynamic models is unexpected cooler SSTA either side of the U.S. causing mid-summer troughs suppressing heat risk.