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TD Three-E strengthens into Tropical Storm Calvin, TS Merbok makes landfall in Hong Kong, continuing to watch the Atlantic

TD Three-E strengthens into Tropical Storm Calvin, TS Merbok makes landfall in Hong Kong, continuing to watch the Atlantic

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The Northern Hemisphere tropics remain active today, with Tropical Storm Calvin being named in the East Pacific, Tropical Storm Merbok making landfall in Hong Kong, and the development threat in the Caribbean or Gulf of Mexico by early next week. TROPICAL STORM CALVIN IS BORN The organization of Tropical Depression Three-E improved enough on Monday afternoon for the National Hurricane Center to upgrade it to Tropical Storm Calvin at 5:00 PM EDT (4:00 PM CDT local time). Calvin is the…

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Tropical Depression Three-E quickly forms in East Pacific, Tropical Storm Merbok a threat to China, and Caribbean development still a possibility

Tropical Depression Three-E quickly forms in East Pacific, Tropical Storm Merbok a threat to China, and Caribbean development still a possibility

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The tropics are coming to life in the Northern Hemisphere this weekend. At 5:00 PM EDT (4:00 PM CDT local time), Tropical Depression Three-E was designated in the East Pacific. Three-E is the third tropical cyclone of the 2017 Pacific hurricane season. In addition, Tropical Storm Merbok was named by the Japan Meteorological Agency (JMA) in the South China Sea, making it the second named storm of the 2017 Pacific typhoon season. TROPICAL DEPRESSION THREE-E (EAST PACIFIC) The National Hurricane…

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Increasing chance of tropical development in Northwest Caribbean next weekend, Invest 92E designated in the East Pacific

Increasing chance of tropical development in Northwest Caribbean next weekend, Invest 92E designated in the East Pacific

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The tropics are likely about to get active in both the Atlantic and Pacific with multiple areas to watch. Several recent model runs have predicted the development of a large, disorganized tropical cyclone in the Northwest Caribbean in about a week. The 12z Saturday GFS, ECMWF, CMC and NAVGEM models all predicted the second Atlantic tropical cyclone of the year to form by June 20.  The CMC track is farther east and predicts a landfall in Florida by Day 10,…

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Low chance of tropical cyclone development in Southwest Caribbean this weekend, development in East Pacific also a possibility

Low chance of tropical cyclone development in Southwest Caribbean this weekend, development in East Pacific also a possibility

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A westerly wind burst is expected to occur in the Eastern Pacific this weekend. Westerly wind bursts are often associated with the development of El Niño, but they can also enhance cyclonic turning at the low latitudes. Most models agree that an area of low pressure is likely to form in the Southwestern Caribbean Sea in 48-72 hours, with the low likely moving inland into Central America by hour 96. Tropical cyclone development at this latitude is fairly rare because usually…

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Tropical Depression Two-E disorganized as it nears landfall in Mexico, no longer expected to become Tropical Storm Beatriz

Tropical Depression Two-E disorganized as it nears landfall in Mexico, no longer expected to become Tropical Storm Beatriz

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Tropical Depression Two-E has taken a more northward path than originally expected yesterday, and is now expected to make landfall in the Mexican State of Oaxaca this afternoon or evening. As of 10:00 AM CDT (11:00 AM EDT) Thursday, Tropical Depression Two-E was centered near 15.4°N 97.1°W, and was moving north-northeastward at about 6 mph. Maximum 1-minute sustained winds were estimated to be 30 knots (35 mph), with a minimum pressure of 1005 millibars. As I noted yesterday, the large…

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Tropical Depression Two-E forms in East Pacific, forecast to strengthen but models remain divergent

Tropical Depression Two-E forms in East Pacific, forecast to strengthen but models remain divergent

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At 11:00 a.m. Wednesday, the National Hurricane Center (NHC) initiated advisories on Tropical Depression Two-E south of Mexico in the East Pacific. Maximum winds were estimated to be 25 knots (30 mph), along with a minimum pressure of 1007 millibars. The cyclone was centered near 13.9°N 97.8°W, with the center located near the center of an area of deep convection. Two-E was moving northeastward at about 3 mph.  The NHC expects TD Two-E to slowly strengthen over the next five…

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Special Update: Invest 91E organizing quickly, could become Tropical Depression Two-E as soon as tomorrow

Special Update: Invest 91E organizing quickly, could become Tropical Depression Two-E as soon as tomorrow

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Invest 91E has substantially improved in organization since this morning. The system has had persistent deep convection this afternoon, but the convective activity is currently not quite well organized enough for the system to be designated a tropical depression. As of their 5:00 PM PDT Tuesday Tropical Weather Outlook, the National Hurricane Center raised the two-day development chances to 70 percent and the five-day probability to 80 percent. 91E is currently a sprawling area of low pressure with a large…

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Cyclonic Storm Mora expected to make landfall near Chittagong, Bangladesh, Tropical Depression could form Southwest of the Gulf of Tehuantepec this week

Cyclonic Storm Mora expected to make landfall near Chittagong, Bangladesh, Tropical Depression could form Southwest of the Gulf of Tehuantepec this week

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Cyclonic Storm Mora has strengthened slightly since yesterday over the Bay of Bengal. As of 12:00 UTC this morning, Mora had 1-minute maximum sustained winds of 55 knots (65 mph), and 3-minute maximum sustained winds of 45 knots (50 mph). As noted yesterday, moderate wind shear seems to be preventing any rapid intensification of Mora before landfall, as the center of circulation is located along the eastern edge of the deep convection. Mora lacks an eye feature, but has overall become…

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Tropical Cyclone 02B strengthens into Cyclonic Storm Mora in the North Indian Ocean, chance of development increasing in East Pacific

Tropical Cyclone 02B strengthens into Cyclonic Storm Mora in the North Indian Ocean, chance of development increasing in East Pacific

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Tropical Cyclone 02B in the North Indian Ocean has recently been upgraded to Cyclonic Storm Mora, and has continued to become better organized today as it tracks northward through the Bay of Bengal. As of 18:00 UTC this afternoon, 02B had 3-minute maximum sustained winds of 35 knots and 1-minute maximum sustained winds of 40 knots. Just recently, the India Meteorological Department named the system Mora. Mora is the second named storm of the 2017 North Indian Ocean Cyclone Season….

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Invest 94B in Bay of Bengal close to Tropical Cyclone Status, new area of interest in East Pacific

Invest 94B in Bay of Bengal close to Tropical Cyclone Status, new area of interest in East Pacific

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Update 5:00 PM EDT: Invest 94B has now developed into Tropical Cyclone 02B. Invest 94B in the Bay of Bengal of the Indian Ocean is nearly a tropical cyclone. 94B has had persistent deep convection for several hours now, and a recent ASCAT pass showed that the circulation of the system was well-defined. The ASCAT pass also showed winds of tropical storm force. 94B is likely to develop into Cyclonic Storm Mora during the next day or two, and could…

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