Subtropical Storm Andrea (AL012019) 05/20 May – 05/21 May 2019 Having lasted for only 24 hours, Andrea was one of the shortest-lived (sub)tropical cyclones on record. a. Synoptic History Subtropical Storm Andrea (AL012019) 05/20 May – 05/21 May 2019 Having lasted for only 24 hours, Andrea was one of the shortest-lived (sub)tropical cyclones on record. […]

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Tropical Cyclone Report Hurricane Florence (AL062018) 31 August – 19 September 2018 Florence reached Category 4 intensity (on the Saffir-Simpson Hurricane Wind Scale) twice during its lifetime. It carved out a relatively smooth (albeit aclimatological) path that extended from near the African coast to North Carolina, where it made landfall as a Category 1 hurricane. […]

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Tropical Cyclone Report Tropical Storm Gordon (AL072018) 3 September – 12 September 2018 Gordon rapidly became a tropical storm in the southeastern Gulf of Mexico before making a subsequent landfall along the north-central Gulf Coast. a. Synoptic History A diffuse tropical wave that moved off the coast of Africa on 18 August appears to have […]

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Tropical Cyclone Report Tropical Storm Ernesto (AL052018) 15 August – 18 August 2018 Following on the heels of Tropical Storm Debby, Ernesto was a brief tropical storm over the north Atlantic in August that started out subtropical. a. Synoptic History Ernesto’s origins were from a weak mid-level trough that moved off the northeastern coast of […]

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Tropical Cyclone Report Tropical Storm Debby (AL042018) 7 August – 9 August 2018 Debby was one of seven tropical cyclones that at one point possessed subtropical characteristics during 2018. It formed at high latitudes from baroclinic processes and never affected land. a. Synoptic History Debby had baroclinic origins. Satellite data indicate that a weakening mid-level […]

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Tropical Cyclone Report Tropical Storm Nadine (AL152018) 9 October – 13 October 2018 Nadine was a marginal tropical storm over the eastern Atlantic that failed to become a hurricane due to strong vertical shear. a. Synoptic History Nadine originated from a tropical wave that departed the west coast of Africa on 6 October. The wave […]

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Tropical Cyclone Report Tropical Storm Kirk (AL122018) 22 September – 29 September 2018 Kirk was a series of tropical cyclones that fell victim to strong shear over the Caribbean Sea during 2018 (the others being Beryl and Isaac). a. Synoptic History Kirk’s origin was complex.  An anomalous northward-extension of the ITCZ was first noted on […]

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Tropical Cyclone Report Tropical Storm Joyce (AL102018) 12 September – 19 September 2018 Joyce was a series of tropical cyclones – one of five – to develop during the first two weeks of September. It meandered erratically over the central Atlantic without affecting land. a. Synoptic history During the second week of September, a near-record […]

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Tropical Cyclone Report Hurricane Isaac (AL092018) 7 September – 15 September 2018 Isaac was a small tropical cyclone that achieved hurricane status for about a day over the central Atlantic before weakening to a tropical storm. It dissipated over the eastern Caribbean Sea due to strong wind shear that persisted across much of the Caribbean […]

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Tropical Cyclone Report Hurricane Helene (AL082018) 7 September – 16 September 2018 Helene was a Category 2 hurricane that formed near the west coast of Africa, then gently curved around the western periphery of the subtropical ridge. Its extratropical remnants subsequently impacted portions of northwestern Europe before becoming absorbed by a larger non-tropical cyclone. a. […]

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