PJM-East (in fact all of PJM) was hit hard, again, by heatwave conditions this week. The amplified heat stress is the 5th event of the summer season in PJM-East. Uncommon (and un-welcomed) peak heat events in September are likely to continue although with less amplitude.

The late calendar summer U.S. population weight CDD forecast emphasizes excessive cooling demand. Weekly summer 2026 U.S. population weight CDD indicate the majority of weeks were warmer than the 10-year climatology.

Eduardo is shifting over 31C surface water in a light shear environment. Rapid intensification is possible, given the light shear environment. NOAA/NHC issues a Hurricane Watch and Storm Surge Warning for the Upper Texas and Southwest Louisiana Coast.

Southern Europe heat rebuilds during late calendar summer. ECM ENS indicates vigorous warm temperature anomalies during the next 15 days which include widespread 95F/35C risk for Southwest and Southeast Europe.