Invest 93L has tropical storm force winds, but no convection
Posted by Chris in Tampa on 7/31/2014, 4:51 pm
It needs convection to get the upgrade.
http://www.ssd.noaa.gov/PS/TROP/floaters/93L/93L_floater.html



"SPECIAL TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
415 PM EDT THU JUL 31 2014

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

A Hurricane Hunter aircraft has continued to investigate the
low pressure system located about 500 miles east of the Windward
Islands.  Observations from the aircraft indicate that this system
is producing winds of up to 40 to 45 mph in the northern portion of
the circulation.  Showers and thunderstorms could redevelop over
the low tonight or Friday, which could result in tropical cyclone
formation.  Regardless of development, winds of gale force are
likely to spread across portions of the Lesser Antilles beginning
early Friday.  Interests in the Lesser Antilles should continue
to monitor the progress of this disturbance as it moves
west-northwestward near 20 mph, and watches or warnings may be
required for some of these islands later tonight or Friday.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...70 percent."

http://www.nhc.noaa.gov/gtwo.php?basin=atlc&fdays=5




"Tropical Cyclone:
A warm-core non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters, with organized deep convection and a closed surface wind circulation about a well-defined center. Once formed, a tropical cyclone is maintained by the extraction of heat energy from the ocean at high temperature and heat export at the low temperatures of the upper troposphere. In this they differ from extratropical cyclones, which derive their energy from horizontal temperature contrasts in the atmosphere (baroclinic effects)."

From: http://www.nhc.noaa.gov/aboutgloss.shtml
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Invest 93L has tropical storm force winds, but no convection - Chris in Tampa, 7/31/2014, 4:51 pm
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