At 1:15 p.m. Atlantic Standard Time on September 5—about the same time that the NHC announced that Leslie had become a hurricane—the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this natural-color image. Spanning hundreds of kilometers, Leslie had a spiral shape and clear eye characteristic of strong storms.
Look at these central pressures.
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September 9, 2012
2330:00z
UNISYS Infrared GOES East Satellite (click title to entry for 12 hour loop - thank you)
Leslie might be stalled due to water vapor. Maybe.
.gif)
September 9, 2012
2330:00z
UNISYS North and West Hemisphere Water Vapor Satellite (click here for 12 hour loop)
Leslie has company. My first impression is Leslie has been consuming its own water vapor to sustain its status. The winds maintained enough momemtum with the central pressure rising to continue to be a tight enough storm to feed its own water vapor needs. Why do I say that? Because on the 12 hour loop, THE SIZE / DIAMETER / RADIUS become smaller while maintaining wind speed and central pressure. The diminishing size is not dictating the resolve of Leslie necessarily, so much as its sustainability.
I've been watching Climate Crisis vortexes for over 12 years. I have them documented. They have characteristics and I can go into them, but, what they frequently do is hover over small islands as a hear source. That heat source, even from a small island sustains the central pressure. HEAT from Bermuda sustained the central pressure and the LENGTH of time Leslie sustained its central pressure was the length of time it was near or over Bermuda. I know this sounds outrageous, but, I have large Mid-latitude and Arctic Oscillation vortexes documented to sustain and maintain their position when over small islands. I have them generating their initial 'central pressure' over the island itself. It's all in my notes and if the Hurricane Center Research wants to check Leslie I'll guarantee that is what has occurred.
I used to write extensive geological descriptions of the jet stream and vortexes when I first started until I learned more about their BEHAVIORS. But, I know that is the case. It stagnated over Bermuda and maintained its 'heat' source while it drew down in size and used its own water vapor for fuel.
Nearly at the same latitude Leslie on the west coast at the north end of the Baja Peninsula there is a vortex forming.
The east coast of North America, including Canada should be on alert for Leslie for awhile, I wouldn't count it out yet. There is another circulation center to Leslie's east and additional turbulence off Africa. Africa is mostly unrelated, but, the circulation center to Leslie's east and the one forming on the west coast is stabilizing the Leslie where it is located. I am not saying it won't go out to sea and not make landfall, but, prudent observing is still in order. There are not that many isobars difference between Leslie and the other storms, even across the continent. As a matter of fact there is a break in the isobars toward Leslie southwest of where the tornado struck New York.
Another six hours at least.
Thank you to the Washington Post.
Look at these central pressures.
25 25.70 -62.80 09/05/15Z 60 990 TROPICAL STORM
First it drops 3 millibars in 6 hours and becomes a hurricane. 26 25.90 -62.70 09/05/21Z 65 987 HURRICANE-1
Then it drops 2 millibars in 6 hours and sustains as a hurricane with a central pressure of 985 for 40 hours. 40 hours at the same central pressure.
27 26.20 -62.50 09/06/03Z 65 985 HURRICANE-1
28 26.30 -62.40 09/06/09Z 65 985 HURRICANE-1
29 26.40 -62.40 09/06/15Z 65 985 HURRICANE-1
30 26.50 -62.20 09/06/21Z 65 985 HURRICANE-1
30A 26.50 -62.20 09/07/00Z 65 985 HURRICANE-1
31 26.50 -62.20 09/07/03Z 65 985 HURRICANE-1
31A 26.50 -62.20 09/07/06Z 65 985 HURRICANE-1
32 26.70 -62.20 09/07/09Z 65 985 HURRICANE-132A 26.70 -62.00 09/07/12Z 65 985 HURRICANE-1
Then is drops its central pressure again by 4 millibars in three hours BUT returns to Tropical Storm status with diminished wind speeds by 5 knots to 60 knots per hour. It must have been reorganizing.
33 26.80 -62.20 09/07/15Z 60 981 TROPICAL STORM
33A 27.10 -62.20 09/07/18Z 55 982 TROPICAL STORM
34 27.40 -62.20 09/07/21Z 55 982 TROPICAL STORM
34A 27.60 -62.20 09/08/00Z 55 981 TROPICAL STORM
35 27.60 -62.30 09/08/03Z 55 983 TROPICAL STORM
35A 27.80 -62.30 09/08/06Z 55 - TROPICAL STORM
36 28.10 -62.30 09/08/09Z 55 983 TROPICAL STORM
36A 28.30 -62.50 09/08/12Z 55 986 TROPICAL STORM
Its central pressure fluctuates for the next 21 hours. Oscillation. It drops to 55 knots but sustains those winds.
Then Leslie increases its central pressure by two millibars in three hours, but, never changes its wind speed. It sustains that wind speed and central pressure at 988 millibars for another 30 hours. Leslie sustains the central pressure but drops wind speed to 50 knots. It is currently 50 knots with a central pressure of 988 millibars. It passed through 988 on the way to a hurricane before, but, the wind speed then was 60 knots per hour.
37 28.60 -62.50 09/08/15Z 55 988 TROPICAL STORM
37A 29.00 -62.50 09/08/18Z 55 988 TROPICAL STORM
38 29.40 -62.50 09/08/21Z 55 988 TROPICAL STORM
38A 29.70 -62.60 09/09/00Z 55 988 TROPICAL STORM
39 30.10 -62.60 09/09/03Z 55 988 TROPICAL STORM
39A 30.50 -62.60 09/09/06Z 55 988 TROPICAL STORM
40 30.80 -62.50 09/09/09Z 55 988 TROPICAL STORM
40A 31.40 -62.50 09/09/12Z 50 988 TROPICAL STORM
41 32.00 -62.40 09/09/15Z 50 988 TROPICAL STORM
41A 32.60 -62.40 09/09/18Z 50 988 TROPICAL STORM
42 33.40 -62.10 09/09/21Z 50 988 TROPICAL STORM
What the heck is going on here?
.gif)
2330:00z
UNISYS Infrared GOES East Satellite (click title to entry for 12 hour loop - thank you)
Leslie might be stalled due to water vapor. Maybe.
.gif)
September 9, 2012
2330:00z
UNISYS North and West Hemisphere Water Vapor Satellite (click here for 12 hour loop)
Leslie has company. My first impression is Leslie has been consuming its own water vapor to sustain its status. The winds maintained enough momemtum with the central pressure rising to continue to be a tight enough storm to feed its own water vapor needs. Why do I say that? Because on the 12 hour loop, THE SIZE / DIAMETER / RADIUS become smaller while maintaining wind speed and central pressure. The diminishing size is not dictating the resolve of Leslie necessarily, so much as its sustainability.
I've been watching Climate Crisis vortexes for over 12 years. I have them documented. They have characteristics and I can go into them, but, what they frequently do is hover over small islands as a hear source. That heat source, even from a small island sustains the central pressure. HEAT from Bermuda sustained the central pressure and the LENGTH of time Leslie sustained its central pressure was the length of time it was near or over Bermuda. I know this sounds outrageous, but, I have large Mid-latitude and Arctic Oscillation vortexes documented to sustain and maintain their position when over small islands. I have them generating their initial 'central pressure' over the island itself. It's all in my notes and if the Hurricane Center Research wants to check Leslie I'll guarantee that is what has occurred.
I used to write extensive geological descriptions of the jet stream and vortexes when I first started until I learned more about their BEHAVIORS. But, I know that is the case. It stagnated over Bermuda and maintained its 'heat' source while it drew down in size and used its own water vapor for fuel.
Nearly at the same latitude Leslie on the west coast at the north end of the Baja Peninsula there is a vortex forming.
The east coast of North America, including Canada should be on alert for Leslie for awhile, I wouldn't count it out yet. There is another circulation center to Leslie's east and additional turbulence off Africa. Africa is mostly unrelated, but, the circulation center to Leslie's east and the one forming on the west coast is stabilizing the Leslie where it is located. I am not saying it won't go out to sea and not make landfall, but, prudent observing is still in order. There are not that many isobars difference between Leslie and the other storms, even across the continent. As a matter of fact there is a break in the isobars toward Leslie southwest of where the tornado struck New York.
Another six hours at least.
Thank you to the Washington Post.
