The opinion of Climate Impact Company is that -IOD generation – which is expected – will regenerate La Nina for later this year which would enhance seasonal tropical cyclone activity in the North Atlantic basin.
The 5th day of the month release of the ECMWF monthlies yields high impact hot and dry projections for JUN/JUL/AUG 2025 across the Great Plains and Central Europe. Parts of these regions are already in drought and the outlook from ECMWF implies intensifying drought for summer 2025.
The largest area of drought is across the Southwest U.S. as we enter early warm season in the U.S. Drought is also present, although not as intense, across the west/northwest Great Plains. Interestingly, the most severely dry evaporative drought demand index (EDDI) is not in the primary drought areas, rather the Mid-Atlantic region and Florida.
The dry duration forecast through the next 10 days is a full 240 hours across parts of the Upper Midwest and Midwest States as areas missing the heavy rains of April are watching for drought development. In the Black Sea region where strong drought persists, a wetter pattern change is indicated into mid-May.