Marine Heatwave Inspires Europe Hot/Dry High Pressure Ridge Later June; MJO/SOI Inspired El Nino Climate Onset; Brazil Freeze Days 11-15?
06/04/2026, 5:48 am EDT
Climate Impact Company Gas/Power Report
Highlight: The Heathrow/Paris Vs. Berlin CDD Forecast Divide!
Discussion: The May 2026 CDD at Heathrow and Paris (Fig. 1-2) were prohibitively warm! A whopping 61 CDD was observed in Paris due to a record (May) heat spike compared to 12 and 15 30-year/10-year climatology. The June 2026 CDD forecast for both Heathrow and Paris remain hot with strong increases in CDD count from the previous (May) forecast. Note that May, June, and July (Paris) are hotter (CDD) forecasts than last year’s totals.
Conversely, the north/northeast rim of the heat dome failed to reach Berlin (Fig. 3) during May and similarly, will fall short in June, as Berlin CDD are closer to normal.
The very warm forecasts for Heathrow and Paris for late summer are less extreme, and Berlin joins each location for anomalous heat end the 2026 warm season.
Fig. 1: Climate Impact Company CDD forecast for MAY-SEP 2026 at Heathrow compared to 30-year/10-year climatology, the previous forecast, and past 2 years.
Fig. 2: Climate Impact Company CDD forecast for MAY-SEP 2026 at Paris compared to 30-year/10-year climatology, the previous forecast, and past 2 years.
Fig. 3: Climate Impact Company CDD forecast for MAY-SEP 2026 at Berlin compared to 30-year/10-year climatology, the previous forecast, and past 2 years.