Cool risks will return to Central US, September coming into view
Good afternoon! We hope we caught you in the middle of a great Thursday afternoon. To piggyback a bit on our overnight and early morning thoughts, today’s midday update will focus mostly on the evolving pattern across the Central and Eastern states over the next 5 weeks — much of which has come into better view over the past 12 to 24 hours. The weather pattern, largely, has been defined by an Eastern Pacific ridge and high latitude blocking anomaly over the past few weeks, which has led to cooler temperatures and troughing in the Central States and much of the AG Belt.
This pattern has lagged into this week, as a storm system developing over the Central Plains states again drags cold air into the Northern 1/3 of the USA and eventually the Ohio and Mississippi River Valley. Minneapolis, in fact, has seen temperatures below normal averages in 13 of the last 14 days! The well-established pattern is finally forecast to become more transient, as a ridge retrogrades from the Eastern Pacific westward into the Central Pacific.