261  
ABNT20 KNHC 111239 CCA  
TWOAT  
 
TROPICAL WEATHER OUTLOOK...CORRECTED  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
800 AM EDT MON AUG 11 2025  
 
FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF AMERICA:  
 
CORRECTED TO FIX A TYPO AND INCLUDE MENTION OF GALE WARNINGS FOR  
NON-TROPICAL AREA OF LOW PRESSURE SOUTH-SOUTHEAST OF NOVA SCOTIA.  
 
EASTERN TROPICAL ATLANTIC (AL97):  
SHOWER AND THUNDERSTORM ACTIVITY HAS PERSISTED AND CONTINUES TO  
SHOW SIGNS OF ORGANIZATION WITH A WELL-DEFINED AREA OF LOW PRESSURE  
LOCATED JUST TO THE WEST OF THE CABO VERDE ISLANDS. IF THESE  
STRUCTURAL TRENDS CONTINUE, THE SYSTEM IS LIKELY TO BECOME A  
TROPICAL DEPRESSION OR STORM, POSSIBLY AS SOON AS LATER THIS  
MORNING. LOCALLY HEAVY RAINFALL AND GUSTY WINDS ARE EXPECTED TO  
CONTINUE TODAY ACROSS PORTIONS OF THE CABO VERDE ISLANDS, AND  
INTERESTS THERE SHOULD MONITOR THE PROGRESS OF THIS SYSTEM.  
REGARDLESS OF DEVELOPMENT OVER THE NEXT COUPLE OF DAYS, THE SYSTEM  
IS EXPECTED TO CONTINUE MOVING WESTWARD TO WEST-NORTHWESTWARD AT 15  
TO 20 MPH ACROSS THE EASTERN AND CENTRAL TROPICAL ATLANTIC.  
* FORMATION CHANCE THROUGH 48 HOURS...HIGH...90 PERCENT.  
* FORMATION CHANCE THROUGH 7 DAYS...HIGH...90 PERCENT.  
 
CENTRAL ATLANTIC (AL96):  
A WEAK TROUGH OF LOW PRESSURE LOCATED OVER THE CENTRAL ATLANTIC IS  
ONLY PRODUCING LIMITED SHOWER AND THUNDERSTORM ACTIVITY.  
SIGNIFICANT DEVELOPMENT OF THIS SYSTEM IS BECOMING UNLIKELY OVER  
THE NEXT FEW DAYS AS THE SYSTEM DRIFTS GENERALLY NORTHWARD,  
REMAINING OVER THE CENTRAL ATLANTIC.  
* FORMATION CHANCE THROUGH 48 HOURS...LOW...10 PERCENT.  
* FORMATION CHANCE THROUGH 7 DAYS...LOW...10 PERCENT.  
 
NORTHWESTERN ATLANTIC:  
A NON-TROPICAL AREA OF LOW PRESSURE IS CURRENTLY LOCATED A FEW  
HUNDRED MILES TO THE SOUTH-SOUTHEAST OF NOVA SCOTIA, CANADA. WHILE  
CURRENT SHOWER AND THUNDERSTORM ACTIVITY WITH THE SYSTEM IS LIMITED,  
THIS SYSTEM IS DRIFTING OVER THE WARM WATERS OF THE GULF STREAM  
WHERE SOME TROPICAL OR SUBTROPICAL DEVELOPMENT COULD OCCUR OVER THE  
NEXT DAY OR TWO. BY THE MIDDLE OF THIS WEEK, THE SYSTEM IS EXPECTED  
TO MOVE NORTHWARD OVER COOLER WATERS, ENDING ITS CHANCES FOR FURTHER  
TROPICAL DEVELOPMENT. FOR MORE INFORMATION ON THIS SYSTEM, INCLUDING  
GALE WARNINGS, SEE HIGH SEAS FORECAST ISSUED BY THE NATIONAL WEATHER  
SERVICE.  
* 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 PAPIN  
 
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