Tropical Weather Outlook: 2 areas being monitored, up to 90% development odds

en Español 000 ABNT20 KNHC 182338 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Sun Oct 18 2026 For the North Atlantic...Caribbean Sea and the Gulf of America: Off the East Coast of the United States: A storm-force non-tropical low pressure area is developing along a frontal boundary tonight off the southeast coast of the United States. This low is likely to move slowly and erratically over the next couple of days while it initially remains non-tropical. Later this week, if the system stays over the Gulf Stream, environmental conditions could become more conducive for the low to develop some subtropical characteristics. A subtropical cyclone could form over the second half of this week as the system begins moving generally northeastward, offshore of the eastern United States. Regardless of development, this system will cause high winds, coastal flooding, and dangerous surf along portions of the U.S. East Coast. Please consult statements and warnings from local National Weather Service offices and the Weather Prediction Center for more information, along with High Seas Forecasts and Storm Warnings issued by the National Weather Service. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...medium...40 percent. && 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 Papin

en Español 000 ABPZ20 KNHC 182333 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 PM PDT Sun Oct 18 2026 For the eastern and central North Pacific east of 180 longitude: Active Systems: The National Hurricane Center is issuing advisories on Hurricane Trudy, located offshore of southwestern Mexico. South of Southern Mexico: An area of low pressure is developing well offshore to the south of the coasts of Guatemala and El Salvador. Environmental conditions appear conducive for gradual development of this system, and a tropical depression is expected to form around the middle of this week as the system moves westward to west-northwestward, remaining well south of the coasts of Central America and southern Mexico. * Formation chance through 48 hours...low...20 percent. * Formation chance through 7 days...high...90 percent. $$ Forecaster Katz/Papin