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ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 PM EDT Thu Sep 17 2020

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

The National Hurricane Center is issuing advisories on Hurricane 
Teddy, located over the central tropical Atlantic and on recently 
downgraded Tropical Depression Vicky, located over the eastern 
tropical Atlantic. 

1. Shower and thunderstorm activity has changed little today in 
association with an area low pressure system located over the 
southwestern Gulf of Mexico. Upper-level winds are gradually 
becoming more conducive for development, and a tropical depression 
or a tropical storm could form within the next day or so. The low 
is expected to meander over the southwestern Gulf of Mexico through 
tonight before moving slowly northward to northeastward on Friday 
and Saturday.  An Air Force Reserve reconnaissance aircraft is 
scheduled to investigate the disturbance this afternoon. For more 
information on this system, see High Seas Forecasts issued by the 
National Weather Service.
* Formation chance through 48 hours...high...90 percent. 
* Formation chance through 5 days...high...90 percent.

2. An elongated area of low pressure located a few hundred miles 
south-southwest of the Cabo Verde Islands is producing disorganized 
shower and thunderstorm activity.  Environmental conditions are 
expected to be conducive for development during the next few days, 
and a tropical depression could form before upper-level winds become 
less favorable by late this weekend.  The system is forecast to move 
west-northwestward at 10 to 15 mph during the next several days.
* Formation chance through 48 hours...medium...40 percent. 
* Formation chance through 5 days...medium...50 percent.

3. Showers and thunderstorms have change little since this morning in 
association with a non-tropical area of low pressure located over 
the far northeastern Atlantic Ocean several hundred miles east of 
the Azores. Some additional subtropical development is possible over 
the next day or so as it moves east-southeastward and then 
northeastward at about 10 mph. The system is expected to reach the 
coast of Portugal late Friday.  For more information on this system, 
see High Seas Forecasts issued by Meteo France. 
* Formation chance through 48 hours...low...30 percent. 
* Formation chance through 5 days...low...30 percent.

High Seas Forecasts issued by Meteo France can be found under WMO 
header FQNT50 LFPW and available on the web at 
www.meteofrance.com/previsions-meteo-marine/bulletin/grandlarge/ 
metarea2

High Seas Forecasts issued by the National Weather Service
can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 
KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php

Forecaster Latto




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