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Remnants of Gabrielle


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Thread title needs updating. It was a manderin at 5pm and now a TS at 9:00. Clearly NHC didn't think this would develop this fast.

 

It was a mandarin at 2 PM EDT, a Tropical Depression at 5 PM EDT, and will become a Tropical Storm with the 11 PM EDT advisory. It is not a TS until an official advisory is released. In terms of development, I think its right on schedule and continues a slow intensification. 

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:axe:

 

"DROPSONDE DATA FROM THE NASA GLOBAL HAWK AIRCRAFT SUGGEST THAT THE

CIRCULATION OF GABRIELLE IS TILTED TO THE NORTHEAST WITH HEIGHT...
WITH A MID-LEVEL CIRCULATION SEEN IN DATA FROM THE SAN JUAN WSR-88D
RADAR. THIS TILTED STRUCTURE IS CONSISTENT WITH SOUTHERLY TO
SOUTHWESTERLY VERTICAL SHEAR OF 5 TO 10 KT SHOWN OVER THE CYCLONE
BY THE UW-CIMSS AND SHIPS MODEL ANALYSES. IN ADDITION...THE
DROPSONDE DATA SHOWED DRY AIR IN THE MID LEVELS OF THE ATMOSPHERE
AROUND GABRIELLE. GIVEN THE ENVIRONMENT...THE SOMEWHAT DISORGANIZED
STATE OF THE CIRCULATION...POSSIBLE LAND INTERACTION...AND THE
PRESENCE OF THE LARGE AREA OF DISTURBED WEATHER NORTHEAST OF
GABRIELLE...NOT MUCH STRENGTHENING IS EXPECTED IN THE SHORT TERM.
THE NHC FORECAST IS IN GOOD AGREEMENT WITH THE INTENSITY CONSENSUS
AIDS FOR THE FIRST 24 HOURS. IT IS ENTIRELY POSSIBLE THAT THE
LOW-LEVEL CIRCULATION WILL DISSIPATE IN THE NEXT 24 HOURS. ASSUMING
THAT GABRIELLE SURVIVES...ONLY LIMITED INTENSIFICATION IS SHOWN
LATER IN THE PERIOD AS THE SHEAR INCREASES DRAMATICALLY AHEAD OF AN
UPPER-LEVEL TROUGH. THE NHC FORECAST REMAINS BELOW MUCH OF THE
INTENSITY GUIDANCE LATE IN THE PERIOD...WHICH SEEMS TOO HIGH GIVEN
THE INCREASE IN SHEAR. THE NHC FORECAST IS ALSO SUPPORTED BY THE
GLOBAL MODELS...WHICH DO NOT SHOW MUCH INTENSIFICATION AFTER
GABRIELLE MOVES NORTH OF THE CARIBBEAN SEA."

 

The horror known as the 2013 Atlantic hurricane season continues.

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GFS- Gabrielle almost looks like it weakens enough to maybe escape the trough and stall as a weak system.  Just South of Bermuda, if shallow enough, looks like the 700 mb ridge may build far enough out into the Atlantic to start it heading back West or Southwest.  Glass eight full.  It'd be between 25 knot and 45 knot 250 mb wind barbs, per GFS, so it should be a shallow system.  May decouple then die.  But maybe not.  Just through 5 1/2 days, bed time.

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I completely understand the negativity. You're living the storm chaser version of the death ridge in the spring of 2010. Keep the faith man, there will eventually be a chaseable storm, right?

:wub:

You're right-- just gotta keep the faith. Thank you.

Re: Gaby... It seems structurally confused, with mixed signals from radar, surface obs, etc.

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Ladies and Gentlemen, I think we have an eye forming. It almost looks like the center has reformed to the east next to the heavy convention.

 

 

Look at the velocity profiles and Puerto Rico observations, and that will tell you otherwise.

 

Huge diurnal convection pulse this morning... There is most definitely a coherent ring of enhanced convection developing.. just can't tell if it's located over the center of the low-level vortex, or if it will redevelop one to the east. It's about time we see some nice tropical convection for once!

 

 

 

 

avn-animated.gif

 

 

TC_DIURNAL-COMBO-07L-4.jpg

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I expected more when I went to bed last night.  I am disappoint.

 

6Z GFS removes the mid level moisture off to the Northeast, with a remnant low drifting back towards Florida in a week.  Maybe we'd get lucky, shear should be lighter then, maybe it'll spin up over the Gulf Stream.  Probably not.

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I expected more when I went to bed last night.  I am disappoint.

 

6Z GFS removes the mid level moisture off to the Northeast, with a remnant low drifting back towards Florida in a week.  Maybe we'd get lucky, shear should be lighter then, maybe it'll spin up over the Gulf Stream.  Probably not.

 

Why are you disappoint?  Don't you want to hit the 11 Sep record??  You want to give up the opportunity for historic lameness for a 65-kt fish?

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