Hot Summer Ahead Central U.S. but High Population Coasts Cooler and U.S. Population Weight CDD Forecasts Ease Back
Discussion: The Climate Impact Company month 1-4 outlook valid for July through October revealed plenty of anomalous warmth ahead! However, the warm-to-hot bias is across the Central U.S. and high population zones on each coast are adjusted cooler. Consequently, the U.S. population weight CDD forecasts are lowered for each month. The monthly CDD anomaly forecast shifts decisively below the 3-year (2019-2021) average (Fig. 1). Previously, the outlook was at or slightly hotter than the 10-year normal. Now, monthly forecasts are less hot than the 10-year normal for July through September (Fig. 2).
Fig. 1: The U.S. population weight HDD totals for each month of the warm season vs. the 30-year and 10-year normal.
Fig. 2: The U.S. population weight CDD totals for each month of the warm season vs. the 30-year and 10-year normal.