July 2025 Global Oceans Marine Heatwaves Update
07/25/2025, 8:43 am EDT
North Atlantic ITCZ Gaining Significant Strength!
07/29/2025, 9:09 am EDT
Climate Impact Company Week 2-4 Outlook
North America
Issued: Monday, July 28, 2025
Highlight: Hot blast for mid-August!
Chart of the day: Marine heat wave SUDDENLY pushes toward California Coast.
Discussion: Suddenly, marine heatwave NEP25A has pushed rapidly eastward toward the California Coast. The warmer SSTA pattern increases the chance of a West U.S. upper ridge for late summer.
Week-2 Ahead Forecast valid August 3-9, 2025: Hot Southwest; Cool Northwest.
Discussion: Cool weather lingers through the first third of August in the Northwest. Significant heat is building in the Southwest. California turns somewhat hotter late in the period. The Northeast is trending hotter late period.
Week-3 Ahead Forecast valid August 10-16, 2025: Another very hot week.
Discussion: Potentially, another significantly hot week! This time the West/Northwest is very hot and the Northeast roasts again.
Week-4 Ahead Forecast valid August 17-23, 2025: Marginal Central to Mid-Atlantic heat (AI); ECM hotter Northwest and Northeast.
Discussion: The heat in the West/Northwest lingers while subsiding in the Northeast.