000
ABNT20 KNHC 211937
TWOAT

Special Tropical Weather Outlook
NWS National Hurricane Center Miami FL
340 PM EDT Wed Oct 21 2026

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

Special Outlook issued to raise formation probabilities for AL93

Offshore of the East Coast of the United States (AL93):
Updated: Shower and thunderstorm activity has become better
organized in association with a storm-force low pressure area
located a few hundred miles off the mid-Atlantic United States
coast. The system has continued to acquire subtropical
characteristics today and has become separated from fronts. If
these trends continue, a subtropical storm could form later this
afternoon or tonight while it accelerates northeastward.

Regardless of the status of the system, high winds, coastal
flooding, and dangerous surf are expected along portions of the U.S.
East Coast during the next few days. For more information, including
hurricane-force extratropical wind warnings, please consult
statements and warnings from local National Weather Service offices
and the Weather Prediction Center, along with the High Seas
Forecasts and the Storm Warnings issued by the National Weather
Service.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 7 days...high...70 percent.

Subtropical Central Atlantic:
A trough of low pressure located several hundred miles
east-southeast of Bermuda is producing a large area of disorganized
showers and thunderstorms. Some development of this system is
possible during the next day or two while it moves slowly
north-northeastward. Upper-level winds are forecast to become too
strong for further development by the weekend.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...10 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 Blake/Reinhart