Thread by @kegill

Storm surge built up over of several days, starting when #florence was a cat 4 or strong cat 3 storm. That "baked in” the roughly-10ft storm surge from Cape Hatteras to Myrtle Beach, NC.
@MichaelEMann at gu.com/p/9ckb6/stw

Because warmer oceans mean more moisture in the atmosphere, "for each 1C of warming, there is about 7% more moisture in the air". #florencehurricane is generating about 10% more rainfall due to 1.5C-above-normal temps, increasing risk of additional inland flooding.

The destructive potential of a hurricane is the cube of wind speed. (News to me.) #florencehurricane had a 11% increase in wind speed due to warm water; that's a 33% increase in destructive potential.

Florence "is a warning of what has already arrived. Far worse is to come if we don’t get serious, in a hurry, about acting on climate change."
@MichaelEMann in @guardian

Complementary reporting from @borenbears from Thursday

“We have solid data across decades of rainfall records to nail the attribution — climate change is increasing the frequency of extreme rainfall events,” Georgia Tech climate scientist Kim Cobb
apnews.com/47d8e0bf053542…

With the advent of #florence, for four years running some US community "has been drenched because of a stalled hurricane," Hal Needham.