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- Invest 98L could bring rain to the areas affected by the Florence disaster on Tuesday.
- This disturbance had an average chance of tropical development.
- The tropical depression of Kirk was dispelled Monday in the east of the Lesser Antilles.
- Meanwhile, the subtropical storm Leslie is turning in the central Atlantic Ocean.
A disturbance in the southwestern Atlantic Ocean could cause showers in the Carolinas affected by the Florence disaster and is being monitored for possible tropical development by the National Hurricane Center (NHC).
This large low pressure zone located about 450 miles south-southeast of Cape Hatteras, North Carolina, named Invest 98L by the NHC, had a medium development chance within 24 hours.
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Atlantic basin satellite and areas to watch (The potential areas of tropical development according to the latest perspectives of the National Hurricane Center are represented by polygons, color-coded according to the developmental chances of the next five days.An "X" indicates the location of a current disruption.)
Although this disturbance may turn into a tropical depression as it migrates west-northwest, strong winds and / or dry air at high altitudes should prevent any development by the end of Tuesday or Wednesday. approach to the Carolinas coast.
Regardless of development, the main impact of this system could be an increase in the likelihood of rain in eastern North Carolina, possibly the Virginia Tidewater, on Tuesday until Wednesday morning before the system does not slide in the North Atlantic Ocean.
Locally abundant rains are possible near the outer banks and perhaps in other coastal areas of North Carolina.
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Elsewhere in the Atlantic Basin
NHC is also monitoring some other disturbances in the Atlantic Basin for potential tropical development.
The tropical depression Kirk, the eleventh designated storm of the Atlantic hurricane season in 2018, collapsed Monday in the eastern Atlantic Ocean after developing on Saturday morning about 450 miles south of the Cabo Verde Islands.
On Monday morning, NHC forecasters could not find a closed low-pressure circulation, indicating that Kirk was no longer a tropical depression, but rather a tropical wave.
This was partly due to Kirk's fairly fast moving west, producing a wind shear on the system that eventually tore it apart.
NHC will continue to monitor Kirk's remains, currently giving it an average chance of redevelopment over the next few days, as it moves west across the tropical Atlantic Ocean.
However, it is expected to encounter a formidable wind shear wall – changing wind speed and / or direction with height – as it gets closer to the Lesser Antilles more late this week. This wind shear tore the tropical depression eleven over the weekend.
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Current satellite and wind shear (The cloud areas are shown in white, the areas of strong wind shear, the difference in wind speed and direction with the height are indicated in purple, the high shear is hostile to tropical cyclones and those trying to to develop oneself.)
Subtropical Storm Leslie, the 12th storm of the hurricane season, formed on Sunday morning in the central Atlantic Ocean from a low pressure gyre between Bermuda and the Azores.
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Another low pressure zone may form north of Leslie later this week, then merge with Leslie, and it could be classified as another subtropical or tropical storm.
None of these systems will be a threat to the land as they snake in the central Atlantic Ocean.
This activity is not unusual, as the tropical Atlantic can remain busy in late September or early October.
Number of named storms for 100 years during the hurricane season in the Atlantic. (NOAA)
According to the NHC, four named storms develop in the Atlantic basin after mid-September in mid-season, three of which become hurricanes and one becomes a category 3 or stronger hurricane.
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