Dramatic Cool Change to Ocean Surface Off Northeast U.S. Coast
06/02/2025, 12:47 pm EDT
Persistent -GLAAM = Wetter Than Normal Northern Hemisphere Climate Pattern
06/09/2025, 4:43 am EDT
Climate Impact Company Daily Feature
Issued: Thursday, June 5, 2025
Highlight: Just-issued ECMWF “monthlies” aggressive with dry and hot climate for the central and northern Great Plains for mid-to-late summer.
Discussion: The just-issued ECMWF “monthlies” aggressively forecasts consistent anomalous dry and hot climate across the central and northern Great Plains and much of the Canadian Prairies for July through September. The model shifts wet weather risk to the East Coast and Gulf of Mexico Coast leaving high pressure across the North-central States. The high-pressure location is also inspired by a tendency for monsoon thunderstorm activity across the Southwest U.S.
Fig. 1-3: ECMWF “monthlies” indicate dryness in the central and northern Great Plains for July, August, and September.
Fig. 4-6: ECMWF “monthlies” indicate hot risk for the Canadian Prairies and the central to northern Great Plains for July, August, and September.