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Month: May 2018

Sheared tropical cyclone may form over the Gulf of Mexico – potential track still uncertain

Sheared tropical cyclone may form over the Gulf of Mexico – potential track still uncertain

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A weak, sheared tropical cyclone could still form over the Gulf of Mexico by late this week. The 12z Sunday ECMWF, CMC and ICON models all predicted the development of a tropical storm over the central Gulf of Mexico by next Saturday. The GFS model is much farther east than the other models, predicting an elongated low pressure system will track to the northeast over the Florida peninsula into the western Atlantic. Given the high-shear environment, it would not be…

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Broad low pressure area likely to form over the Northwestern Caribbean next week, may develop

Broad low pressure area likely to form over the Northwestern Caribbean next week, may develop

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The first tropical cyclone of the 2018 Atlantic hurricane season has a chance to form late next week – and may lead to a messy Memorial Day weekend for Florida and the Southeastern United States, regardless of development. A Central American Gyre (CAG) and a Convectively Coupled Kelvin Wave (CCKW) are expected to increase convection over the Western Caribbean Sea, leading to the formation of a broad area of low pressure. The low pressure area is expected to be pulled…

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Tropical development not expected in Gulf of Mexico, 2018 Pacific hurricane season officially begins

Tropical development not expected in Gulf of Mexico, 2018 Pacific hurricane season officially begins

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The non-tropical area of low pressure located over the Gulf of Mexico has failed to organize, and tropical or subtropical development appears quite unlikely at this time. In a 8:00 a.m. EDT Tuesday Special Tropical Weather Outlook, the National Hurricane Center (NHC) lowered 48-hour and five-day development chances to 10%. It appears as if the dry environment and fairly cool sea surface temperatures. The low pressure system remains poorly organized, with minimal convective activity. None of the reliable 12z Wednesday…

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Low pressure system over Gulf of Mexico struggling to organize

Low pressure system over Gulf of Mexico struggling to organize

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A broad, non-tropical low pressure system, located over the eastern Gulf of Mexico, has not become better organized today. The National Hurricane Center (NHC) has decreased the development chances of the disturbance to 20% within 48 hours and 30% within five days. An Air Force Reserve Hurricane Hunter aircraft was scheduled to visit the disturbance on Tuesday afternoon, but with decreasing chances of development, this flight may be canceled. Although tropical or subtropical development is becoming less likely, the disturbance…

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Chances of Subtropical or Tropical Development over Northeast Gulf of Mexico Increasing

Chances of Subtropical or Tropical Development over Northeast Gulf of Mexico Increasing

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The National Hurricane Center (NHC) issued a Special Tropical Weather Outlook (STWO) Sunday afternoon on an area of disturbed weather associated with an upper-level trough – giving the disturbance a 30 percent chance of development within 48 hours, and a 40 percent chance of development within five days. It is possible that this area of disturbed weather could develop into a tropical or subtropical cyclone during the next few days before it is expected to move inland into the Florida…

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Subtropical development possible in the Northeastern Gulf of Mexico early next week

Subtropical development possible in the Northeastern Gulf of Mexico early next week

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Tropical Depression One-E has degenerated into a remnant low, but there is already  another system in the tropics to watch over the coming days. An upper-level low pressure system is expected to reach the northeastern Gulf of Mexico, and has the potential to gain some tropical or subtropical characteristics before moving inland into the Northern Gulf Coast late Tuesday. The National Hurricane Center (NHC) has not yet mentioned this system in a Special Tropical Weather Outlook (STWO). The 12z Saturday…

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TD One-E hanging on, Gulf of Mexico may warrant monitoring early next week

TD One-E hanging on, Gulf of Mexico may warrant monitoring early next week

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The first tropical depression of the 2018 Pacific hurricane season, Tropical Depression One-E, is holding on as a tropical depression despite strong wind shear over the eastern Pacific. One-E, which formed on Thursday afternoon, is likely to degenerate into a remnant low late today or early tomorrow. The remnants of One-E should move slowly north-northwestward before fully dissipating by Sunday. One-E is no threat to any land areas. As of 8:00 a.m. PDT (11:00 a.m. EDT), Tropical Depression One-E was…

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It begins: Tropical Depression One-E forms over the open eastern Pacific

It begins: Tropical Depression One-E forms over the open eastern Pacific

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The National Hurricane Center (NHC) issued their first tropical cyclone advisory of 2018 Thursday afternoon, with the initiation of advisories on Tropical Depression One-E over the Eastern Pacific. Invest 90E, which remained poorly organized on Wednesday, became better organized Thursday with the formation of a sufficiently well defined circulation to be classified as a tropical depression. One-E is not expected to become a named tropical storm, and is likely to degenerate into a remnant low by late Friday. One-E is…

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Invest 90E running out of time to develop

Invest 90E running out of time to develop

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Invest 90E over the Eastern Pacific has struggled to develop persistent deep convection near its elongated center of circulation, and chances of it developing into a tropical cyclone are diminishing. The National Hurricane Center (NHC) gave it a 50 percent chance of development, both within 48 hours and five days in a Special Tropical Weather Outlook issued at 10:25 AM PDT (1:25 PM EDT). This is down from the 70 percent chance NHC gave 90E early Wednesday morning. Because 90E…

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Invest 90E becoming better organized over the Eastern Pacific

Invest 90E becoming better organized over the Eastern Pacific

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Invest 90E over the Eastern Pacific has become a little better organized today as it moves west-northwestward through the tropical Pacific. The National Hurricane Center (NHC) gives 90E a 50 percent chance of development, both within 48 hours and five days. Scatterometer data from Tuesday afternoon indicates that the circulation has become much better defined, and an increase in convective organization will likely result in the formation of a tropical depression on Wednesday. 90E is no threat to land. As…

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