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356:. The system continued to track northeast and strengthened slightly, reaching its peak intensity of 85 km/h (53 mph) as it approached the Azores that evening. After tracking through the area, the storm weakened slightly as it moved to the north-northeast. Through an interaction with the cold front early on 5 October, the subtropical storm became extratropical. The system was fully absorbed by the front later that day. The newly absorbed system would separate from the dissolving frontal system and become
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409:(NHC) re-analyzes the systems of the past hurricane season and revises the storm history if there is new data that was operationally unavailable. This reanalysis revealed that the storm became a subtropical storm on 4 October, making it the earliest forming 19th Atlantic tropical or subtropical storm on record. The previous record holder was an
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attached to the system, as temperatures did not change ahead of and behind the system, until an unrelated cold front passed the Azores. Satellite imagery suggested that the system was briefly a tropical storm as the warm core was found; however, the widespread wind field and the presence of an
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around the centre and was better organized with a well-defined centre of circulation. In addition, the system had a warm core more typical of tropical cyclones as opposed to the cold core of extratropical cyclones. The warm-core nature also meant that there were no warm or
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The subtropical nature of this unnamed system was determined several months after the fact, while the
National Hurricane Center was performing its annual review of the season. Upon reclassification, the storm was entered into
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The 2005 Azores storm was not classified as a subtropical storm until April 2006, after a reassessment by the
National Hurricane Center. Had it been operationally classified as such, it would have been named
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Beven II, John L.; Lixion A. Avila; Eric S. Blake; Daniel P. Brown; James L. Franklin; Richard D. Knabb; Richard J. Pasch; Famie R. Rhome & Stacy R. Stewart (March 2008).
197:
later on 4 October before becoming extratropical again on 5 October. No damages or fatalities were reported during that time. Its remnants were soon absorbed into a
193:. Nonetheless, the system was able to generate a well-defined centre convecting around a warm core on 4 October. The system was short-lived, crossing over the
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it moved gradually west to northwest. On 3 October, it became a broad surface low about 400 nautical miles (740 kilometres; 460 miles) southwest of
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on 28 September. The low organized itself over the next days, producing several bursts of convection. While remaining non-tropical with a
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faced 61 km/h (38 mph) winds, with the peak recorded gust being 85 km/h (53 mph). No damage or fatalities were reported.
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Tropical storm-force winds were reported across parts of the Azores, primarily on the eastern islands. The strongest winds were reported on
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345:. Early on 4 October, convection increased as the surface low organized itself, and the system became a subtropical depression.
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findings that confirmed that the system was indeed one. The first finding was the cloud pattern, which had deep
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At the time, the system was not believed to have been subtropical. However, there were several post-
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808:"Atlantic storm could become Epsilon; possible Zeta forming in southwest Caribbean"
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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
616:"History for Santa Maria, Azores: Week of October 2, 2005 through October 8, 2005"
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876:"With newly formed Tropical Storm Teddy, NHC tracking five named systems at once"
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189:. It developed in the eastern Atlantic Ocean, an unusual region for late-season
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that developed on 26 October. It held this distinction until 2020, when
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reached 79 km/h (49 mph) with gusts to 94 km/h (58 mph).
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was created from a revision of this article dated 26 May 2023
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The system originated out of an upper-level low just west of the
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Around the same time, the depression turned northeast into a
646:"History for Santa Maria, Azores: Thursday, October 6, 2005"
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Hurricane
Research Division. 1 January 2008. Archived from
676:"History for Santa Maria, Azores: Tuesday, October 4, 2005"
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upper-level trough confirmed that it was only subtropical.
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Tropical storm (39–73 mph, 63–118 km/h)
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Tropical depression (≤38 mph, ≤62 km/h)
321:, remnant low, tropical disturbance, or monsoon depression
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Category 4 (130–156 mph, 209–251 km/h)
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Category 3 (111–129 mph, 178–208 km/h)
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Category 2 (96–110 mph, 154–177 km/h)
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ahead of an oncoming cold front and strengthened into a
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Category 1 (74–95 mph, 119–153 km/h)
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Marchante, Michelle; Harris, Alex (14 September 2020).
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attained tropical storm strength on 14 September.
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543:"Tropical Cyclone Report: Unnamed Subtropical Storm"
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Category 5 (≥157 mph, ≥252 km/h)
476:"Annual Summary: Atlantic Hurricane Season of 2005"
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816:. Avoyelles Publishing Company. 19 October 2020.
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778:National Oceanic and Atmospheric Administration
587:National Oceanic and Atmospheric Administration
554:National Oceanic and Atmospheric Administration
443:Timeline of the 2005 Atlantic hurricane season
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706:"Tropical Weather Summary - 2005 Web Final"
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841:"Tropical Storm Teddy Discussion Number 7"
774:"Atlantic hurricane best track ("HURDAT")"
576:"Tropical Cyclone Report: Hurricane Vince"
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185:as it was operationally classified as an
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888:from the original on 14 September 2020
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741:"Should-have-been-Tammy | Category 6"
33:The storm at peak intensity near the
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839:Stewart, Stacy (14 September 2020).
820:from the original on 22 October 2020
751:from the original on 26 October 2020
720:from the original on 16 October 2020
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381:Impact, classification and records
16:Unnamed Atlantic subtropical storm
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453:List of unnamed tropical cyclones
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201:. That system went on to become
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739:Masters, Jeff (14 April 2006).
1466:2005 Atlantic hurricane season
1008:2005 Atlantic hurricane season
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179:2005 Atlantic hurricane season
157:2005 Atlantic hurricane season
1:
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167:2005 Azores subtropical storm
884:. Chatham Asset Management.
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411:unnamed 1933 tropical storm
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181:. It was not named by the
92:50 mph (85 km/h)
1481:Tropical cyclones in 2005
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1006:Tropical cyclones of the
849:National Hurricane Center
710:National Hurricane Center
583:National Hurricane Center
550:National Hurricane Center
448:List of Azores hurricanes
407:National Hurricane Center
391:10-minute sustained winds
183:National Hurricane Center
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1471:Hurricanes in the Azores
435:Tropical cyclones portal
177:of the extremely active
22:Azores subtropical storm
911:Tropical Cyclone Report
358:Subtropical Storm Vince
939:
919:Listen to this article
484:Monthly Weather Review
326:
221:Meteorological history
44:Meteorological history
938:
505:10.1175/2007MWR2074.1
319:Extratropical cyclone
228:
205:, which affected the
191:tropical cyclogenesis
970:More spoken articles
788:on 16 September 2008
589:. 22 February 2006.
514:on 10 September 2008
240:Saffir–Simpson scale
97:Lowest pressure
745:Weather Underground
680:Weather Underground
650:Weather Underground
620:Weather Underground
497:2008MWRv..136.1109B
360:on 8 October.
309:Subtropical cyclone
23:
1476:Subtropical storms
940:
813:Avoyellestoday.com
682:. 4 October 2005.
652:. 6 October 2005.
622:. 8 October 2005.
405:. Every year, the
387:Santa Maria Island
327:
89:Highest winds
74:1-minute sustained
21:
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354:subtropical storm
339:SĂŁo Miguel Island
207:Iberian Peninsula
187:extratropical low
175:subtropical storm
163:
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67:Subtropical storm
37:on 4 October
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507:. Archived from
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203:Hurricane Vince
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118:Overall effects
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131:Areas affected
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913:on the storm
892:14 September
890:. Retrieved
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859:14 September
857:. Retrieved
834:
822:. Retrieved
811:
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790:. Retrieved
786:the original
753:. Retrieved
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722:. Retrieved
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516:. Retrieved
509:the original
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154:Part of the
73:
18:
518:8 September
374:cold fronts
350:warm sector
1460:Categories
1324:Twenty-two
966:Audio help
957:2023-05-26
824:23 October
755:23 October
724:23 October
560:31 October
459:References
369:convection
289:Storm type
199:cold front
123:Fatalities
58:Dissipated
792:10 August
335:cold core
173:and only
1445:Category
1276:Nineteen
1252:Philippe
1113:Franklin
1019:Timeline
968: ·
886:Archived
853:Archived
818:Archived
749:Archived
718:Archived
690:7 August
684:Archived
660:8 August
654:Archived
630:8 August
624:Archived
591:Archived
421:See also
389:, where
283:Unknown
1415:Epsilon
1353:history
1300:Unnamed
1240:Ophelia
1190:history
1185:Katrina
1087:history
955: (
926:minutes
493:Bibcode
341:in the
233:Map key
142:IBTrACS
1137:Harvey
1082:Dennis
1046:Arlene
909:NHC's
365:season
343:Azores
281:
276:
271:
266:
261:
256:
251:
246:
215:HURDAT
195:Azores
135:Azores
50:Formed
35:Azores
1403:Delta
1391:Gamma
1367:Alpha
1348:Wilma
1336:Vince
1312:Tammy
1216:Maria
1149:Irene
1101:Emily
1070:Cindy
600:4 May
594:(PDF)
579:(PDF)
546:(PDF)
512:(PDF)
479:(PDF)
403:Tammy
78:SSHWS
1427:Zeta
1379:Beta
1288:Stan
1264:Rita
1228:Nate
1173:Jose
1125:Gert
1058:Bret
894:2020
861:2020
826:2020
794:2008
757:2020
726:2020
692:2008
662:2008
632:2008
602:2006
562:2006
520:2008
165:The
111:inHg
103:mbar
101:997
1204:Lee
1161:Ten
782:NHC
501:doi
489:136
107:hPa
82:NWS
1462::
1422:TS
1398:TS
1386:TS
1362:TS
1319:SD
1307:TS
1295:SS
1271:TD
1199:TS
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