MARIE

What’s steering the storm (what’s “pushing” it along): - Marie is moving around the outer edge of a large, broad high-pressure area over Mexico (a “ridge,” meaning a zone of higher pressure that often guides storms around it). That setup should keep the storm moving northwest for roughly the next day. - Then that high-pressure area is expected to build to the north of Marie, which should nudge the storm onto a more west-northwest track. - After about 3 days, uncertainty increases because a developing dip in the jet stream near the U.S. West Coast (a “trough,” meaning a southward sag in the winds high in the atmosphere) could make Marie slow down.…