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2001 | 3-10 March | Subtropical(?) Cyclone | South Pacific | Unnamed subtropical cyclone of cold-core origins that made landfall in eastern Australia. | NOGAPS: Image Anim | NOGAPS: Image Anim |
2001 | 5-19 June | Tropical Storm Allison | North Atlantic | Damaging yet weak tropical storm that was poorly analyzed until landfall. |
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2001 | 2-7 August | Tropical Storm Barry | North Atlantic | Weak tropical storm that moves inland and dissipates rapidly. |
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2001 | 15-22 August | Tropical Storm Chantal | North Atlantic | Tropical storm that moves inland and dissipates rapidly. |
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2001 | 22-29 August | Tropical Storm Dean | North Atlantic | Weak tropical storm that moves into the north Atlantic. |
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2001 | 7-17 September | Hurricane Erin | North Atlantic | Case of extratropical transition of a strong tropical cyclone. |
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2001 | 9-21 September | Hurricane Felix | North Atlantic | Cyclone that illustrates warm-core development into a hurricane and then decay back into a weak remnant cyclone over cool water without trough interaction or extratropical transition. |
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2001 | 10-24 September | Hurricane Gabrielle | North Atlantic | Conversion of a hurricane into a hybrid cyclone for an extended duration, before extratropical transition over the far northeast Atlantic. |
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2001 | 21-28 September | Hurricane Humberto | North Atlantic | Extratropical transition of a poorly resolved hurricane. |
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2001 | 4-10 October | Hurricane Iris | North Atlantic | Classic conventional tropical cyclone lifecycle. [AVN analysis only occasionally had a closed circulation and so its unrealistic portrayal is not shown here.] |
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2001 | 3-9 October | Tropical Storm Jerry | North Atlantic | Very weak tropical storm that is sheared apart in the western Caribbean. |
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2001 | 10-15 October | Hurricane Karen | North Atlantic | Classic case of the conversion of a subtropical cyclone into a tropical cyclone as illustrated by the "upward" growth of the warm-core thermal wind signal (-VTL and -VTU) to the tropopause while the thermal asymmetry (B) of the cyclone decreases simultaneously. An enhanced version of this evolution is given by Olga later the same year. |
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2001 | 25-31 October | Tropical Storm Lorenzo | North Atlantic | Very weak tropical storm that was poorly analyzed. |
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2001 | 31 October- 7 November |
Hurricane Michelle | North Atlantic | Intense hurricane that undergoes extratropical transition at 30oN. Substantial period as a hybrid warm-secluded extratropical cyclone is well-analyzed by the phase diagrams. |
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2001 | 2-7 November | Hurricane Noel | North Atlantic | Brief conversion of a subtropical cyclone into a hurricane, before being rapidly sheared apart. |
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2001 | 22 November- 5 December |
Hurricane Olga | North Atlantic | Classic case of the conversion of a weak extratropical cyclone (-VT negative on 22ND and 23RD)...into a subtropical cyclone as the warm core develops and builds upward (-VTL becomes positive on 24TH). The subtropical cyclone then converts to a tropical cyclone (-VTU becomes positive on 25TH), before dissipation as a weak shallow warm-core low in early December. |
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