Just to compare a few numbers, flight level from the last recon pass was about 9000 feet when it passed through the secondary wind max, which was read as about 103mph (90kts) flight level winds. Higher altitude, winds will be less. We are now seeing widespread winds at 14000 feet at 120 to 130mph, with an occasional 130mph+ rate (radar estimated). This is in about an hour and a half. That's a big jump in the 2ndary wind max velocity.
(note: the 145mph readings on radar appear to be radar noise - they are all over, not just in the wind maxima regions)