ATL: OLGA - Post-Tropical - Discussion

[NDG]

This clearly developed from a Tropical wave in the BOC then a cold front approached big difference..

What exactly is the "big difference"? As far a sensible wx is concerned I see none..but I'm not a pro...

just that it is not a frontal low. formed independently and warm core..

Yep, this system formed from a pure tropical wave/disturbance not from a frontal boundary.

[NDG]

Plenty of TS force winds found by the recon, buoy 42002 now reporting 1003mb pressure.

[northjaxpro]

This clearly developed from a Tropical wave in the BOC then a cold front approached big difference..

What exactly is the "big difference"? As far a sensible wx is concerned I see none..but I'm not a pro...

just that it is not a frontal low. formed independently and warm core..

No doubt it was warm core, it was classified a TD. We had a warm cored cyclone, at least up through 17Z today.

[tropicwatch]

HH was approaching the center and is apparently having problems with the comms.

[NDG]

The cold front has not reached its core yet, want to know why? Because the buoy is reporting a temp of 79.3F with a dewpoint of 75.9F.
Clearly the cooler air has been wrapping around its circulation along its western and SW quadrants but the system remains a warm core, at least for the next few hours.

[HurricaneAndre2008]

Plenty of TS force winds found by the recon, buoy 42002 now reporting 1003mb pressure.

Would you like to share with the rest of the class

[NDG]

BTW, the TS force winds that the recon has found so far is in the warm NE quadrant of the system not at the western quadrant of the system where the cooler surface air is.

[wxman57]

This clearly developed from a Tropical wave in the BOC then a cold front approached big difference..

Makes no difference where the moisture originated, it’s a frontal low now.

[NDG]

Recon confirms that it is a warm core system. Pressure lower than thought.

AF304 0117A CYCLONE HDOB 13 20191025
181330 2622N 09334W 9587 00414 0051 +221 //// 118023 025 021 003 01
181400 2621N 09335W 9594 00404 0047 +225 +222 125021 023 026 000 00
181430 2620N 09336W 9595 00401 0045 +225 +223 125022 024 026 000 00
181500 2618N 09337W 9591 00406 0045 +225 +223 116022 023 023 001 00
181530 2617N 09338W 9597 00398 0043 +225 +223 115018 021 021 002 00
181600 2616N 09339W 9592 00402 0043 +224 +223 099018 019 023 001 00
181630 2614N 09340W 9596 00397 0041 +224 +223 097018 018 023 000 00
181700 2613N 09341W 9596 00396 0039 +225 +223 101018 019 021 000 00
181730 2611N 09342W 9594 00396 0038 +224 +223 095018 020 020 001 00
181800 2610N 09343W 9600 00391 0037 +224 +223 090019 020 022 001 00
181830 2608N 09343W 9586 00402 //// +220 //// 083020 022 022 001 05
181900 2607N 09344W 9588 00396 0032 +225 +223 078016 019 022 001 00
181930 2605N 09344W 9604 00382 0033 +225 +222 095015 016 022 001 03
182000 2604N 09344W 9589 00393 0029 +226 +222 093011 014 018 001 00
182030 2602N 09344W 9593 00389 0028 +225 +223 093009 011 019 000 00
182100 2601N 09344W 9593 00386 0026 +227 +224 083009 009 020 000 00
182130 2559N 09344W 9594 00385 0025 +225 +224 053007 009 017 002 05
182200 2558N 09343W 9591 00386 //// +226 //// 039007 008 018 000 01
182230 2557N 09342W 9590 00382 0017 +231 +227 049010 013 018 001 00
182300 2555N 09341W 9595 00373 0010 +236 +227 028012 013 019 001 03

[northjaxpro]

The cold front has not reached its core yet, want to know why? Because the buoy is reporting a temp of 79.3F with a dewpoint of 75.9F.
Clearly the cooler air has been wrapping around its circulation along its western and SW quadrants but the system remains a warm core, at least for the next few hours.

Thanks NDG. That should clear up any question that this at the current moment is warm core for sure.

[Aric Dunn]

WARM CORE not a frontal low yet.. should be upgraded to a TS shortly.

[Homie J]

Recon confirms that it is a warm core system. Pressure lower than thought.

AF304 0117A CYCLONE HDOB 13 20191025
181330 2622N 09334W 9587 00414 0051 +221 //// 118023 025 021 003 01
181400 2621N 09335W 9594 00404 0047 +225 +222 125021 023 026 000 00
181430 2620N 09336W 9595 00401 0045 +225 +223 125022 024 026 000 00
181500 2618N 09337W 9591 00406 0045 +225 +223 116022 023 023 001 00
181530 2617N 09338W 9597 00398 0043 +225 +223 115018 021 021 002 00
181600 2616N 09339W 9592 00402 0043 +224 +223 099018 019 023 001 00
181630 2614N 09340W 9596 00397 0041 +224 +223 097018 018 023 000 00
181700 2613N 09341W 9596 00396 0039 +225 +223 101018 019 021 000 00
181730 2611N 09342W 9594 00396 0038 +224 +223 095018 020 020 001 00
181800 2610N 09343W 9600 00391 0037 +224 +223 090019 020 022 001 00
181830 2608N 09343W 9586 00402 //// +220 //// 083020 022 022 001 05
181900 2607N 09344W 9588 00396 0032 +225 +223 078016 019 022 001 00
181930 2605N 09344W 9604 00382 0033 +225 +222 095015 016 022 001 03
182000 2604N 09344W 9589 00393 0029 +226 +222 093011 014 018 001 00
182030 2602N 09344W 9593 00389 0028 +225 +223 093009 011 019 000 00
182100 2601N 09344W 9593 00386 0026 +227 +224 083009 009 020 000 00
182130 2559N 09344W 9594 00385 0025 +225 +224 053007 009 017 002 05
182200 2558N 09343W 9591 00386 //// +226 //// 039007 008 018 000 01
182230 2557N 09342W 9590 00382 0017 +231 +227 049010 013 018 001 00
182300 2555N 09341W 9595 00373 0010 +236 +227 028012 013 019 001 03

What do these #s mean? Sorry for stupid question

[NDG]

Now is when the recon is finding the cooler air wrapping around on the SW quadrant of the storm.

183330 2537N 09345W 9589 00389 0022 +238 +227 312031 031 028 002 00
183400 2536N 09346W 9593 00386 0025 +230 +227 317031 031 029 001 00
183430 2535N 09348W 9594 00387 //// +222 //// 317032 033 029 001 01
183500 2534N 09349W 9591 00392 //// +220 //// 316034 034 032 001 01
183530 2533N 09350W 9594 00391 //// +220 //// 314034 034 032 001 01
183600 2532N 09352W 9594 00392 //// +219 //// 316036 037 028 003 01
183630 2532N 09353W 9594 00392 //// +216 //// 316036 037 033 001 01
183700 2531N 09354W 9592 00397 //// +214 //// 321036 037 035 001 05
183730 2530N 09355W 9592 00398 0039 +214 +213 323040 042 037 001 03
183800 2529N 09357W 9593 00397 0040 +214 +212 325045 046 040 001 00
183830 2528N 09358W 9596 00396 0042 +213 +209 325049 049 040 002 00
183900 2528N 09358W 9596 00396 0044 +207 //// 326051 051 040 003 01
183930 2526N 09401W 9597 00399 //// +205 //// 327052 053 043 002 01
184000 2525N 09402W 9593 00404 0048 +205 +204 328053 056 046 002 01
184030 2524N 09403W 9599 00399 0051 +203 +203 329054 058 045 003 01
184100 2523N 09405W 9597 00401 0051 +203 +201 329053 054 044 004 03
184130 2522N 09406W 9593 00408 0053 +203 +199 329053 055 042 003 00
184200 2521N 09407W 9592 00408 0055 +202 +198 329051 052 042 003 03
184230 2520N 09409W 9597 00406 0056 +201 +197 329050 053 042 002 00
184300 2519N 09410W 9592 00409 0056 +204 +197 331051 053 042 002 03
$$
;

[cycloneye]

Winds in the 50,s

[Sciencerocks]

[TallyTracker]

That temperature profile shows that it is a close call about whether it’s warm core or not. If they wait until 5 pm, it will definitely be frontal by then. If they’re gonna upgrade, they need to do it now.

[NDG]

Winds in the 50,s

https://i.imgur.com/zHv1lkj.png

That's from cooler air circulation around its LLC, it is making the transition to post tropical but it remains a warm core system, IMO.

[cycloneye]

18z Best Track:

AL, 17, 2019102518, , BEST, 0, 259N, 936W, 35, 1002, TS, 34, NEQ

[GCANE]

No doubt about it being a warm core.

[northjaxpro]

Olga is born