RMS takes a victory lap for the performance of much maligned v11 after the model’s performance on Sandy:
However, after Sandy, RMS says its evolved
model has proven to be more accurate in
estimating the impacts of wind, and
especially storm surge—the dominant
cause of losses related to Sandy…
The company points particularly to its modeling of storm surge. The PC360 article is a bit vague, but it sounds like old models keyed storm surge primarily off wind speed. V11 looks at geographic formations street by street.
Update: Fixed link above.