000 ABNT20 KNHC 181145 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Mon Sep 18 2023 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Active Systems: The National Hurricane Center is issuing advisories on Hurricane Nigel, located over the central subtropical Atlantic. Eastern Tropical Atlantic: A tropical wave is expected to move off the west coast of Africa by Wednesday. Environmental conditions are forecast to be conducive for gradual development of the wave thereafter, and a tropical depression is likely to form late this week or this weekend while the system moves westward across the eastern and central tropical Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...high...70 percent. Western Atlantic: A non-tropical area of low pressure is forecast to form near the southeastern coast of the United States late this week. This system could acquire some subtropical characteristics this weekend if it remains offshore while it moves slowly northward or northwestward. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...low...30 percent. $$ Forecaster Pasch