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Invest 91E may slowly develop over the eastern Pacific

Invest 91E may slowly develop over the eastern Pacific

It is only the second day of the 2019 Pacific hurricane season, and there has already been a system designated an “Invest” by the National Hurricane Center (NHC). An Invest – short for area of investigation – is an area of disturbed weather that the NHC believes has a chance of tropical cyclone development. A disorganized area of disturbed weather, Invest 91E, may slowly develop over the next several days as it moves little. As of 12:00 UTC May 16,…

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Cyclonic Fury’s 2019 Pacific hurricane season forecast: Potentially well above-average activity expected

Cyclonic Fury’s 2019 Pacific hurricane season forecast: Potentially well above-average activity expected

Today is May 15, the official start of the Eastern Pacific hurricane season. No tropical cyclones have developed yet in this basin in 2019; 2017 featured the pre-season Tropical Storm Adrian and 2018 featured the pre-season Tropical Depression One-E. The Eastern and Central Pacific is coming off a record-breaking 2018 season which featured 23 named storms, 13 hurricanes, 10 major hurricanes, 3 Category 5 hurricanes, and a record-high 318 Accumulated Cyclone Energy (ACE) units. With a weak El Nino event…

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Slightly above average but destructive 2018 Atlantic hurricane season ends

Slightly above average but destructive 2018 Atlantic hurricane season ends

As usual, November 30 marks the official end of the Atlantic and Eastern Pacific hurricane seasons. Activity this season spanned approximately five months, with Tropical Storm Alberto forming as a subtropical depression May 25 over the Northwestern Caribbean, and ending on October 31 with the extratropical transition of Hurricane Oscar over the central Atlantic. The 2018 Atlantic hurricane season produced 16 tropical cyclones, 15 named storms, 8 hurricanes, and 2 major (Category 3+) hurricanes, with an approximate Accumulated Cyclone Energy…

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Michael becomes a major hurricane as it heads for the Florida Panhandle, Leslie likely to become a hurricane again, Nadine forms in the eastern Atlantic

Michael becomes a major hurricane as it heads for the Florida Panhandle, Leslie likely to become a hurricane again, Nadine forms in the eastern Atlantic

The Atlantic tropics are extremely active for October, with the basin having three named storms simultaneously active in the month for the first time since 1995. The strongest of these storms, Hurricane Michael, has intensified into the second major hurricane of the season over the eastern Gulf of Mexico, and some additional intensification is expected before Michael makes landfall over the western Florida Panhandle. Long-lived Leslie, close to regaining hurricane intensity for the second time, could near Madeira Island and…

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Leslie a Category 1 hurricane, development possible in NW Caribbean or Gulf by early next week, Sergio and Walaka in the Pacific

Leslie a Category 1 hurricane, development possible in NW Caribbean or Gulf by early next week, Sergio and Walaka in the Pacific

Although the northern hemisphere tropics begin to slowly wind down in the month of October, there is still plenty of activity to discuss today. In the Atlantic, Hurricane Leslie is barely hanging onto hurricane status as it begins to turn to the north over the central Atlantic. A Central American Gyre (CAG) may also help spawn the development of a new tropical cyclone in the Northwestern Caribbean or Gulf of Mexico by early next week. In the Pacific, Hurricanes Sergio…

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Four systems to watch in the Atlantic for potential development

Four systems to watch in the Atlantic for potential development

Although the Atlantic currently has no tropical cyclones active, there are four systems being monitored for potential development. The first, Invest 97L, is an area of low pressure east of the Windward Islands which is headed for less favorable conditions, and development appears unlikely. The second, Invest 98L, is a broad area of low pressure southeast of Bermuda, which could gradually gain tropical characteristics some time next week. The third, Invest 99L, is a vigorous tropical wave which has recently…

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Florence slightly weaker but still a major threat to Carolinas, Helene and Isaac weakening, SS Joyce forms over the subtropical Atlantic, 95L likely to develop

Florence slightly weaker but still a major threat to Carolinas, Helene and Isaac weakening, SS Joyce forms over the subtropical Atlantic, 95L likely to develop

The Atlantic is extremely active today, with six – SIX! – systems currently being monitored by the National Hurricane Center. The most serious and strongest of these systems is Hurricane Florence, which has weakened to a Category 3 hurricane but is still expected to bring potentially catastrophic impact to the coast of the Carolinas. In addition, Hurricane Helene is gradually weakening as it heads for a less favorable environment, and Tropical Storm Isaac east of the Caribbean has become very…

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Tuesday evening Florence update: Maintaining Category 4 strength

Tuesday evening Florence update: Maintaining Category 4 strength

Hurricane Florence has changed little in intensity today. Recent data from an Air Force Hurricane Hunter aircraft indicated that Florence has not strengthened since this afternoon. As of 11:00 p.m. EDT Tuesday, Hurricane Florence was centered near 28.4°N 68.7°W, and was moving west-northwestward at about 17 mph. Maximum sustained winds were 120 knots (140 mph), with an estimated minimum pressure of 946 mb. However, reconnaissance aircraft data indicate that this intensity may be a little generous. Florence continues to pose…

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Florence likely to strike Carolinas as a dangerous major hurricane, Helene and Isaac also expected to become hurricanes over tropical Atlantic

Florence likely to strike Carolinas as a dangerous major hurricane, Helene and Isaac also expected to become hurricanes over tropical Atlantic

Hurricane Florence is becoming a major concern for the southeastern United States coast. Florence regained hurricane strength Sunday morning, and is expected to rapidly intensify into a powerful Category 4 hurricane by Tuesday. Florence is now moving into more favorable conditions, and intensification appears to be starting once again. Florence is likely to make landfall in the Carolinas as a major hurricane late Thursday night or early Friday morning, though it is still not out of the question that Florence…

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Very busy Atlantic tropics: Florence an increasing concern for U.S. East Coast, TD 8 forms southeast of Cabo Verde, TD 9 forms over the central tropical Atlantic

Very busy Atlantic tropics: Florence an increasing concern for U.S. East Coast, TD 8 forms southeast of Cabo Verde, TD 9 forms over the central tropical Atlantic

With only three days until the climatological peak of the Atlantic hurricane season, the Atlantic basin is extremely busy today, with four tropical cyclones currently active – TS Florence, TD Gordon, TD Eight and TD Nine. This is the first time the Atlantic has had four simultaneously active tropical cyclones since 2008. Of these, Florence is the most imminent land threat. TS Florence expected to restrengthen this weekend, increasing risk to the United States East Coast Tropical Storm Florence has…

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