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Barbara post-tropical, TS Cosme forms, Gulf of Mexico needs to be watched next week

Barbara post-tropical, TS Cosme forms, Gulf of Mexico needs to be watched next week

Hurricane Barbara has transitioned into a post-tropical cyclone, but a new tropical storm has formed in the eastern Pacific – Cosme. Cosme is no threat to land, and appears to have a short life ahead of it with no significant strengthening. However, in the Atlantic, a trough currently inland over the United States could eventually spawn a low pressure system in the Gulf of Mexico next week, which needs to be watched for possible tropical development. As of 8:00 a.m….

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Barbara rapidly intensifies into a Category 4 hurricane, but expected to weaken soon

Barbara rapidly intensifies into a Category 4 hurricane, but expected to weaken soon

Hurricane Barbara rapidly intensified into the first major hurricane of the 2019 Pacific hurricane season Tuesday morning by reaching Category 4 on the Saffir-Simpson Hurricane Wind Scale. Barbara reached Category 4 intensity less than 48 hours after being named on Sunday. Some slight intensification is possible tonight, but a gradual weakening trend is likely to begin Wednesday as Barbara moves toward cooler waters and increasing wind shear. Barbara is no imminent threat to land. As of 11:00 a.m. HST (5:00…

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TD One-E forms over the eastern Pacific, no threat to land

TD One-E forms over the eastern Pacific, no threat to land

After a 232-day tropical cyclone drought, a tropical cyclone has formed in the eastern Pacific basin. A small area of low pressure developed into Tropical Depression One-E today, making it the latest-forming first tropical depression in the basin since reliable records began in 1971. One-E is likely to become a tropical storm, but is likely to be short-lived as it encounters unfavorable conditions later this week. As of 2:00 p.m. PDT (5:00 p.m. EDT), Tropical Depression One-E was centered near…

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91L very unlikely to develop as it brings heavy rainfall to the Western Gulf Coast

91L very unlikely to develop as it brings heavy rainfall to the Western Gulf Coast

Due to its large size and increasing wind shear, Invest 91L has struggled to develop, and it is likely out of time to develop into a tropical cyclone. As of 18:00 UTC Tuesday, Invest 91L was centered near  23.8°N 97.4°W. Maximum sustained winds were 25 knots (30 mph), with an estimated minimum pressure of 1008 mb. Although thunderstorm activity has increased today, the disturbance remains disorganized and continues to lack a well-defined circulation. The National Hurricane Center (NHC) gave 91L…

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Little change with Invest 91L over the Bay of Campeche

Little change with Invest 91L over the Bay of Campeche

Invest 91L over the Bay of Campeche has not changed much in organization since yesterday. The associated thunderstorm activity remains somewhat disorganized, and the low-level circulation is not yet well defined enough to be classified as a tropical depression. An Air Force Hurricane Hunter aircraft was scheduled to visit 91L this afternoon, but the flight was canceled as 91L remains poorly organized. As of 18:00 UTC Sunday, Invest 91L was centered near 19.7°N 94.5°W, and was nearly stationary. Maximum sustained…

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Tropical development possible in the Bay of Campeche on Sunday or Monday

Tropical development possible in the Bay of Campeche on Sunday or Monday

Tomorrow marks the official start of the 2019 Atlantic hurricane season, and right on schedule, there is a system in the Atlantic basin to watch already. One subtropical storm has already developed in the Atlantic in 2019 (Andrea, earlier this month). A broad area of low pressure over the Yucatan Peninsula has a small chance to develop into the Atlantic’s second named storm of 2019 if it has enough time over water. The National Hurricane Center (NHC) gives this system…

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Invest 91E may develop over the far eastern Pacific if it remains offshore

Invest 91E may develop over the far eastern Pacific if it remains offshore

A broad area of low pressure, re-designated Invest 91E, continues to produce disorganized showers and thunderstorms off the Nicaragua coast. This system should remain nearly stationary and perhaps meander slightly over the next several days, and could develop into a tropical cyclone if it does not move inland into Central America. As of 18:00 UTC Wednesday, Invest 91E was located near 11.8°N 87.3°W. Maximum sustained winds were 25 knots (30 mph), with an estimated minimum pressure of 1006 mb. Invest…

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Andrea now post-tropical, disturbance in eastern Pacific may develop by the weekend

Andrea now post-tropical, disturbance in eastern Pacific may develop by the weekend

Short-lived Subtropical Storm Andrea weakened into a Subtropical Depression on Tuesday morning, and as of 5:00 p.m. EDT, the National Hurricane Center (NHC) has issued the last advisory on Andrea, which has degenerated into a post-tropical remnant low. Andrea has lacked persistent deep convection since early this morning, so it is no longer a subtropical cyclone. Also, we are watching a disturbance in the eastern Pacific once again for possible gradual development. Short-lived Andrea now a post-tropical remnant low As…

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Subtropical Storm Andrea forms southwest of Bermuda

Subtropical Storm Andrea forms southwest of Bermuda

The Atlantic’s first named storm of 2019 – Subtropical Storm Andrea – developed Monday evening southwest of Bermuda. Andrea marks the fifth straight year in which the Atlantic basin has had a named storm develop before the official start of the season (June 1). An Air Force Hurricane Hunter aircraft investigated the disturbance (90L) this afternoon, and found a well-defined circulation. As of 6:30 p.m. EDT Monday, Subtropical Storm Andrea was centered near 28.8°N 68.7°W, and was moving northward at…

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Invest 90L could develop into a brief subtropical or tropical cyclone, 91E less organized

Invest 90L could develop into a brief subtropical or tropical cyclone, 91E less organized

The Atlantic’s first “Invest” – short for area of investigation – was designated early Sunday morning. Invest 90L is currently producing disorganized shower activity well east of the Bahamas, but a narrow window for potential tropical or subtropical development exists between late Monday and Tuesday. If 90L becomes a tropical or subtropical storm, it will be named Andrea. As of 00:00 UTC Monday, Invest 90L was centered near 26.0°N 66.8°W. Maximum sustained winds were 20 knots (25 mph), with an…

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