Uh-oh - someone forecasting weather effects who does not have access to the several hi-$ systems in Europe and the US modeling short-term weather. With the results destined to show up before we all forget too <g>
Brian W
On Saturday, August 22, 2020, 06:59:15 PM CDT, John Denker via Phys-l <phys-l@mail.phys-l.org> wrote:
Hi Folks --
I suppose you've seen the forecast that calls for two hurricanes
(Laura and Marco) in the Gulf of Mexico at the same time.
I find it hard to imagine that anybody could build a forecast model
that didn't take this into account, automatically, as a natural
consequence of modeling the physics ... so probably there's something
fundamental that I'm not understanding.
Order-of-magnitude check: For a category-1 hurricane, tropical-storm
winds (39 mph or greater) typically extend 125 miles from the center.
The speed scales like 1/r, so I would expect 20 mph or (!) greater
250 miles from the center. That's nontrivial compared to the current
forecast of forward motion (13 mph toward the northwest).
They might not get close to each other, but if they do, it's gonna be
innnnteresting.
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