My thoughts as we near nightfall on the U.S. East Coast: mid-latitude auroral displays potentially down to the central U.S. at times are definitely possible as solar wind magnetic field strength (Bt) and speed are still elevated. The Bz is more positive than not (at least that is the trend right now), but substorms are still possible which will push views further south for short periods of time. Watch data in real-time to track the aurora. Do NOT use Kp, OVATION, and likely whatever app you have downloaded on your phone (with the exception of a few). Learn more about what to do tonight: go.theauroraguy.com/chasing-… Webcams will be your friend to get ground-truth confirmation of proxy data from e.g., GOES Mag, real-time solar wind, other magnetometer source, etc. I have a large list on my website: go.theauroraguy.com/webcams I am guessing that we are in more of a high-speed stream solar wind environment right now, and the HSS was forecasted to have a negative polarity which would give us more +Bz than not. It is also possible (a guess) that this high-speed wind pushed the CME and compressed it which is why it hit with a punch and then diminished quickly.