ATL: GORDON - Post-Tropical

[TheAustinMan]

I don't think Harvey was moving nearly this fast though. Looks like some self-induced shear going on and the inner core is so small that there may have been some substantial weakening in the last hour or two.

No weakening according to recon. In fact, just the opposite...somehow. And that's why I said it wouldn't be Harvey. Lol.

The crux of Harvey's run at Category 4 was a center reformation early on that placed the circulation quite possibly in the most ideal position for rapid development. In an exceptionally favorable upper-air environment, the center reformation on that fateful night blossomed into an expansive central dense overcast in the overnight hours that eventually led to a hurricane the following afternoon.

Gordon is a bit speedy this evening and while it recon shows an upward trend it probably can't keep this up forever unless the circulation embeds itself well within convection, which doesn't seem to be the case right now, although it is trying.

[MississippiWx]

Last drop showing an essentially saturated boundary layer

Yeah, it's probably only a matter of time before we see a big blow-up over the center.

[Sciencerocks]

193
URNT15 KNHC 040032
AF305 0307A GORDON HDOB 22 20180904
002230 2640N 08336W 8438 01532 0041 +203 +159 165002 011 027 003 00
002300 2639N 08338W 8426 01547 0039 +214 +150 316013 015 024 001 03
002330 2638N 08339W 8425 01554 0051 +206 +155 333016 017 022 002 00
002400 2637N 08341W 8442 01543 0066 +189 +166 303013 015 023 003 00
002430 2636N 08342W 8419 01570 0077 +177 +163 291016 017 025 002 00
002500 2635N 08343W 8427 01562 //// +167 //// 297014 016 024 003 01
002530 2634N 08344W 8425 01571 0090 +173 +160 308014 015 022 002 00
002600 2633N 08346W 8426 01573 0093 +174 +158 315013 014 022 001 00
002630 2631N 08347W 8425 01577 //// +165 //// 320014 015 022 001 01
002700 2630N 08348W 8427 01577 //// +160 //// 341014 015 022 002 01
002730 2629N 08350W 8429 01577 0116 +161 //// 345011 014 021 004 01
002800 2628N 08351W 8431 01577 0123 +161 //// 357014 015 021 002 01
002830 2627N 08352W 8425 01584 //// +160 //// 349012 013 022 001 01
002900 2625N 08354W 8427 01583 0114 +160 +157 352010 011 020 002 01
002930 2624N 08355W 8426 01585 0115 +160 +154 349010 011 021 001 00
003000 2623N 08356W 8425 01588 //// +160 //// 358012 012 018 002 01
003030 2622N 08358W 8428 01585 0119 +160 +158 004010 012 019 001 01
003100 2620N 08359W 8425 01589 0119 +158 +157 353010 010 021 002 01
003130 2619N 08400W 8423 01593 0125 +155 //// 001008 009 020 003 01
003200 2618N 08402W 8425 01592 0121 +160 +153 345009 010 021 001 00
$$
;

[GCANE]

Last drop showing an essentially saturated boundary layer

yeah that is odd...

It was sampled pretty far from the CoC.

[GCANE]

New tower a lot closer to the CoC

[tarheelprogrammer]

Cover your eyes people, it may be going naked here in a few hours.

[Sciencerocks]

120
URNT15 KNHC 040042
AF305 0307A GORDON HDOB 23 20180904
003230 2617N 08403W 8428 01592 0125 +161 +151 347008 009 019 002 00
003300 2616N 08404W 8425 01598 0127 +165 +149 356010 011 017 002 00
003330 2616N 08404W 8425 01598 0129 +163 +151 359010 011 019 001 00
003400 2616N 08404W 8425 01598 0130 +160 +154 355009 011 017 002 01
003430 2612N 08408W 8428 01600 //// +160 //// 000009 010 017 001 01
003500 2611N 08410W 8428 01600 //// +157 //// 345009 010 017 001 01
003530 2610N 08411W 8426 01601 //// +155 //// 338011 012 016 001 01
003600 2608N 08412W 8425 01604 //// +155 //// 349011 012 016 001 01
003630 2607N 08413W 8427 01602 //// +154 //// 351010 011 018 002 01
003700 2606N 08415W 8426 01605 //// +152 //// 352010 011 017 003 01
003730 2605N 08416W 8424 01605 //// +157 //// 356010 011 018 002 01
003800 2604N 08417W 8428 01602 //// +155 //// 355011 012 018 002 01
003830 2602N 08419W 8426 01605 0139 +156 +151 352012 014 017 002 00
003900 2601N 08420W 8428 01602 0139 +158 +148 343010 012 018 001 00
003930 2600N 08421W 8425 01607 0143 +155 +151 006010 011 019 001 00
004000 2559N 08423W 8428 01605 0142 +157 +148 006009 010 017 002 00
004030 2558N 08424W 8429 01604 0143 +155 +148 001007 008 017 002 00
004100 2556N 08425W 8418 01615 //// +152 //// 004009 010 018 001 01
004130 2555N 08427W 8428 01606 0144 +156 +140 002008 009 019 000 00
004200 2554N 08428W 8425 01610 0145 +158 +130 003007 008 017 001 00
$$
;

[stormhunter7]

since last fix, almost a due west movement?

[Sciencerocks]

528
URNT15 KNHC 040052
AF305 0307A GORDON HDOB 24 20180904
004230 2553N 08429W 8428 01607 0148 +155 +134 003007 007 019 000 00
004300 2551N 08431W 8427 01607 //// +151 //// 004008 010 019 000 01
004330 2550N 08432W 8429 01605 0147 +156 +129 009007 008 016 001 00
004400 2549N 08433W 8426 01609 0145 +160 +131 003007 007 016 002 00
004430 2548N 08435W 8428 01607 0144 +163 +130 009008 008 016 002 00
004500 2547N 08436W 8427 01607 0145 +160 +133 015009 009 016 001 00
004530 2545N 08437W 8425 01611 0147 +158 +134 016010 011 014 002 00
004600 2544N 08439W 8426 01610 0147 +155 +134 016010 011 017 001 00
004630 2543N 08440W 8428 01607 0146 +160 +132 026008 009 017 001 00
004700 2542N 08441W 8428 01607 0146 +155 +138 031007 008 016 001 00
004730 2541N 08442W 8426 01609 0145 +157 +138 025007 007 015 002 00
004800 2539N 08444W 8426 01606 0142 +160 +131 019008 008 018 001 00
004830 2538N 08445W 8425 01605 0137 +162 +129 014008 009 018 001 00
004900 2537N 08446W 8427 01602 0136 +157 +141 029008 010 017 001 01
004930 2536N 08448W 8429 01596 0136 +157 +142 017009 010 017 003 00
005000 2534N 08449W 8429 01596 0134 +160 +137 023008 008 017 001 00
005030 2533N 08450W 8425 01600 0133 +160 +144 017007 008 019 001 00
005100 2532N 08452W 8426 01599 0133 +159 +148 010008 009 020 001 00
005130 2531N 08453W 8428 01598 0131 +161 +141 022009 010 020 000 00
005200 2529N 08454W 8426 01599 0130 +165 +133 031008 009 020 001 00
$$
;

[pcolaman]

Is it me or does it look like the center is relocating to the north of current location ?

[tarheelprogrammer]

since last fix, almost a due west movement?

Pressure is up. It looks like this may of peaked already. Just my opinion. Still be on guard.

[GCANE]

Jeff has his car wash staked out

 https://twitter.com/Jeff_Piotrowski/status/1036754008952766464

[GCANE]

[bella_may]

Cover your eyes people, it may be going naked here in a few hours.

There’s absolutely no sign of that.

[Rocketman]

  Help support Storm2K!

Shortwave IR: http://weather.cod.edu/satrad/exper/?parms=subregional-Florida-07-48-1-100-1&checked=map&colorbar=undefined

What gets my immediate attention is the nasty stuff pushing west from AL into MS along the coast. It's moving at a pretty good clip.

[tarheelprogrammer]

You can see the center is partly exposed in this snippet I took:

[Sciencerocks]

824
URNT15 KNHC 040102
AF305 0307A GORDON HDOB 25 20180904
005230 2528N 08456W 8428 01596 0129 +166 +143 030007 008 017 002 00
005300 2527N 08457W 8425 01600 0130 +164 +137 023008 008 017 002 00
005330 2526N 08458W 8428 01596 0130 +163 +135 021009 009 018 001 00
005400 2525N 08500W 8426 01599 0130 +165 +139 029010 010 017 001 00
005430 2523N 08501W 8426 01599 0130 +161 +141 029009 010 019 001 00
005500 2522N 08502W 8429 01595 0129 +162 +140 039007 008 017 002 03
005530 2521N 08502W 8421 01604 0131 +160 +143 053004 005 /// /// 03
005600 2520N 08500W 8432 01595 0132 +162 +139 080005 005 020 001 00
005630 2521N 08459W 8428 01598 0130 +165 +138 084005 005 017 001 00
005700 2521N 08457W 8425 01599 0131 +165 +138 080003 004 019 001 00
005730 2521N 08455W 8429 01595 0127 +165 +135 070003 003 018 001 00
005800 2521N 08453W 8426 01598 0127 +165 +136 077002 003 018 001 00
005830 2521N 08451W 8429 01598 0131 +165 +138 064001 002 019 001 00
005900 2521N 08450W 8425 01601 0130 +165 +136 118001 001 018 001 00
005930 2521N 08448W 8426 01601 0132 +165 +136 135001 001 019 001 00
010000 2521N 08446W 8428 01599 0133 +165 +139 322000 001 019 001 00
010030 2521N 08444W 8426 01601 0133 +165 +139 173001 002 018 001 00
010100 2521N 08442W 8429 01600 0134 +164 +135 176003 003 017 000 00
010130 2522N 08441W 8428 01601 0134 +163 +136 188003 004 014 002 00
010200 2522N 08439W 8426 01602 0135 +160 +143 177001 004 014 001 00
$$

[Hypercane_Kyle]

Jeff has his car wash staked out

 https://twitter.com/Jeff_Piotrowski/status/1036754008952766464

He'll be fine, it has a blue roof. #blueshed

[Sciencerocks]

Looks to be weakening

783
URNT12 KNHC 040039
VORTEX DATA MESSAGE AL072018
A. 04/00:22:40Z
B. 26.67 deg N 083.61 deg W
C. 850 mb 1469 m
D. 1005 mb
E. 170 deg 21 kt
F. NA
G. NA
H. 48 kt
I. 080 deg 4 nm 00:21:00Z
J. 169 deg 41 kt
K. 080 deg 4 nm 00:21:00Z
L. 27 kt
M. 090 deg 0 nm 00:22:30Z
N. 332 deg 17 kt
O. 233 deg 3 nm 00:23:30Z
P. 17 C / 1520 m
Q. 22 C / 1527 m
R. 15 C / NA
S. 1345 / 8
T. 0.02 / 1 nm
U. AF305 0307A GORDON OB 12
MAX FL WIND 51 KT 322 / 5 NM 23:05:00Z

[NDG]

I am not surprised by the more westerly jog it has taken the last couple of hours, earlier this afternoon you could see the strong east to west low level jet across the northern GOM, that ridge to the north is pretty strong and since it has weakened some since earlier this morning it has been steered more by the low level steerings.