The image below courtesy tropical tidbits shows the upper-level height anomalies through October 21st (according to the latest Global Forecast Ensemble System).
Notice the continuous bright orange colors over the northeastern United States indicative of an upper-level ridge of high pressure with a trough (dip in the jet stream) over the western United States.
This pattern favors mild Indian Summer weather to continue through the next 10 to 20 days.
