Mon Aug 28
On Wednesday it was a tropical storm. By Friday it had been supercharged from a Category 1 hurricane to Category 4. That’s because Harvey passed over an . . extremely warm eddy, 1 to 2 degrees F warmer than the surrounding Gulf of Mexico . . [it] has become wedged between two areas of high-pressure, one system over the SE U.S, the other over the SW U.S. . .
Harvey is still producing so much rain despite being mostly over land [because] it has dropped so much water over such a large area of SE Texas that the storm is pulling that water back up into itself and dumping it again as more rain . . [The] flooding in Houston is so severe [because] water swollen rivers heading to the sea is meeting a storm surge coming inland. In Galveston the sea surge was about 3’ but the actual water surge was about 9’ . .
A low-pressure trough system has been forming north of Harvey and could begin to pull it northward by the end of the week.
[www.theguardian.com/us-news/live/2017/aug/28/ex-hurricane-harvey-houston-flooded-as-catastrophe-unfolds-in-texas-latest-updates] 1740 BST
Irma is coming . .
Sun Sep 3
5 Charts Showing Where Hurricane Irma Might Land: www.zerohedge.com/news/2017-09-02/here-are-5-charts-showing-where-hurricane-irma-might-land
[ This message was edited on Sun Sep 3 by the author ]
Irma, Jose and Katie . .
Fri Sep 8
Click on the image to move inwards. The display gives the estimated wind speed at the cursor.
‘A visualization of global weather conditions forecast by supercomputers, updated every three hours . . atmospheric pressure corresponds roughly to altitude . .several pressure layers are meteorologically interesting . . they show data assuming the earth is completely smooth.’
Note: 1 hectopascal (hPa) = 1 millibar (mb) . .1000 hPa ~100 m, near sea level conditions.
[ This message was edited on Fri Sep 8 by the author ]
Re: Irma, Jose and Katie . .
Fri Sep 8
However, the Ventusky map is flat, and I really like the way the EarthWindMap is shown on a globe. Both sites are mesmerizing!
Thanks for the link, Chrístõ. I'm in Florida (northern part), and we're all watching the approaching hurricane.
On Fri Sep 8, Chrístõ wrote
>. . make an attractive display on the EarthWindMap: tinyurl.com/ychyhdjx
>Click on the image to move inwards. The display gives the estimated wind speed at the cursor.
>‘A visualization of global weather conditions forecast by supercomputers, updated every three hours . . atmospheric pressure corresponds roughly to altitude . .several pressure layers are meteorologically interesting . . they show data assuming the earth is completely smooth.’
>Note: 1 hectopascal (hPa) = 1 millibar (mb) . .1000 hPa ~100 m, near sea level conditions.
Earth = control panel
Fri Sep 8
Happy to be of service, ma’am . . Good luck with yr close encounter with Irma. Don’t let the wind blow up yr petticoats - you know how a flash of ankle inflames us poor mariners!
You can access a control panel to change the display via ’earth’ which opens and closes it. It is not as obvious as it needs to be.
What a hurricane sounds like
Sat Sep 9
Live footage as Hurricane Irma destroys Maho Beach Cam in St Maarten 9/6/2017: