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Category: Active Tropics

Tropical Storm Franklin forms over the Northwestern Caribbean Sea, could become a hurricane over the Bay of Campeche

Tropical Storm Franklin forms over the Northwestern Caribbean Sea, could become a hurricane over the Bay of Campeche

Invest 90L was designated Potential Tropical Cyclone Seven by the National Hurricane Center (NHC) on Sunday evening, and has just recently developed into Tropical Storm Franklin over the Northwestern Caribbean Sea based on last-light visible images indicating that the circulation had become better defined. Franklin is the sixth named storm of the 2017 Atlantic hurricane season so far. As of 11:00 p.m. EDT Sunday, Tropical Storm Franklin was centered near 16.4°N 83.0°W, and was moving west-northwestward at about 13 mph….

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Invest 99L becoming less likely to develop, Invest 90L becoming better organized over the Caribbean

Invest 99L becoming less likely to develop, Invest 90L becoming better organized over the Caribbean

Two systems in the Atlantic still have a chance to develop into a tropical cyclone. An elongated area of low pressure in the central tropical Atlantic, Invest 99L, has become slightly better organized today, but its chances of developing into a tropical cyclone are decreasing since the disturbance is expected to move into unfavorable conditions by early next week. A strong tropical wave over the central Caribbean, Invest 90L, has become a little better organized today, and has potential to…

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Invests 90L and 99L have not become better organized today, but still likely to develop, Tropical Depression Eleven-E forms in East Pacific

Invests 90L and 99L have not become better organized today, but still likely to develop, Tropical Depression Eleven-E forms in East Pacific

Invests 90L and 99L over the Atlantic have not become any better organized today, but remain threats to develop into tropical cyclones over the next several days. In the Eastern Pacific, Invest 91E somewhat unexpectedly developed into Tropical Depression Eleven-E this morning, but is not expected to strengthen due to a hostile environment. Invest 99L likely to develop, but long-term future extremely uncertain Invest 99L has not become much better organized today as it struggles to consolidate due to its…

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Watching two Atlantic tropical waves: Invest 99L in the Eastern Atlantic and Invest 90L in the Eastern Caribbean

Watching two Atlantic tropical waves: Invest 99L in the Eastern Atlantic and Invest 90L in the Eastern Caribbean

The Atlantic is really heating up as we get into August. Two tropical waves over the Atlantic have potential to develop into a tropical cyclone over the next several days. The first one, Invest 99L, is a vigorous, large tropical wave with a broad area of low pressure centered south of the Cabo Verde Islands. The second one, Invest 90L, is a strong tropical wave located over the eastern Caribbean Sea. Both have potential to possibly strengthen and impact land…

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New African wave could develop, 91E not very likely to develop, Noru a serious threat to southern Japan

New African wave could develop, 91E not very likely to develop, Noru a serious threat to southern Japan

There are several areas to watch in the Northern Hemisphere tropics today, but the Atlantic and East Pacific both do not have a tropical cyclone active – the first occurrence of such event since July 7. In the Atlantic, a tropical wave has a chance to develop into the Atlantic’s next tropical cyclone, and could end up as a long-tracked storm. In the Eastern Pacific, Invest 91E has become slightly better organized today, but is not very likely to develop…

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Tropical Depression Emily moving away from the United States, two other low-chance areas to watch in the Atlantic

Tropical Depression Emily moving away from the United States, two other low-chance areas to watch in the Atlantic

The Atlantic basin typically sharply increases in activity during the month of August, and the Atlantic remains active with three areas to watch, including Tropical Depression Emily. Emily is losing tropical characteristics and will likely be classified as a post-tropical remnant low at 11:00 p.m. EDT this evening. There are two other areas to watch in the Atlantic basin, a non-tropical area of low pressure in the Gulf of Mexico, and a tropical wave several hundred miles west-southwest of Cabo…

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Tropical Storm Emily rapidly develops near Tampa Bay, makes landfall in Anna Marie Island

Tropical Storm Emily rapidly develops near Tampa Bay, makes landfall in Anna Marie Island

Invest 98L rapidly developed a small well-defined circulation as it separated from a cold front early Monday, and the National Hurricane Center (NHC) initiated advisories on Tropical Depression Six at 6:00 a.m. EDT this morning. At 8:00 a.m. EDT, Six was upgraded to Tropical Storm Emily based on Doppler radar velocity data. Emily has since made landfall on Anna Maria Island, Florida at 10:45 a.m. EDT this morning. The cyclone was centered near 27.5°N 82.7°W, and was moving eastward at…

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Invest 98L has a low chance to develop over Eastern Gulf of Mexico, Noru rapidly intensifies to Earth’s strongest tropical cyclone of 2017

Invest 98L has a low chance to develop over Eastern Gulf of Mexico, Noru rapidly intensifies to Earth’s strongest tropical cyclone of 2017

A well-defined area of low pressure located along a dissipating cold front in the Northeastern Gulf of Mexico was designated Invest 98L by the National Hurricane Center (NHC) Sunday morning. Aside from 98L, a tropical wave in the central tropical Atlantic is becoming less likely to develop due to dry air. In the Western Pacific, Typhoon Noru explosively intensified to Earth’s first category 5 tropical cyclone of 2017, but has since weakened slightly. In the Eastern Pacific, Hilary has now…

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Yet another Atlantic tropical wave could develop, but dry air likely to limit development

Yet another Atlantic tropical wave could develop, but dry air likely to limit development

The National Hurricane Center (NHC) is monitoring a tropical wave for development over the eastern tropical Atlantic. The Atlantic Main Development Region (MDR) has seen a total of eight disturbances so far monitored by the NHC – significantly more than the only one each in 2014, 2015 and 2016. The NHC gives this tropical wave, located several hundred miles southwest of the Cabo Verde Islands, a near zero percent chance of development within 48 hours and a 20 percent chance…

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Hilary and Irwin change little, Typhoon Nesat headed for Taiwan, 97L not expected to develop

Hilary and Irwin change little, Typhoon Nesat headed for Taiwan, 97L not expected to develop

The global tropics remain active today, but little has changed since yesterday. Hurricane Hilary weakened to a tropical storm last night, and has changed little in strength today. Tropical Storm Irwin has also changed very little in strength. The eastern Atlantic disturbance was briefly designated Invest 97L last night, but was quickly dropped from the Tropical Weather Outlook after it failed to organize. Tropical Storms Hilary and Irwin still expected to merge early next week As of 2:00 p.m. PDT…

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