Recent GEFS forecasts >day 10 (and especially >day 15) have had a persistent bias toward shifting the -VP cell into the E/C Pac., showing anom. westerlies lies there. Then the forecasts <10 days lead time correct and those Westerlies evaporate. So treat w/ lots of skepticism pic.twitter.com/4wMOWnoGGx

— Yaakov Cantor (@yconsor) May 14, 2023