847  
ABNT20 KNHC 181149  
TWOAT  
 
TROPICAL WEATHER OUTLOOK  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
800 AM EDT THU JUN 18 2026  
 
FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF AMERICA:  
 
OFFSHORE EAST COAST OF THE UNITED STATES (REMNANTS OF ARTHUR):  
SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A TROUGH OF LOW PRESSURE  
(THE REMNANTS OF ARTHUR) ARE LOCATED OVER THE SOUTHEASTERN UNITED  
STATES. ENVIRONMENTAL CONDITIONS APPEAR MARGINALLY CONDUCIVE FOR  
SOME SUBTROPICAL OR TROPICAL DEVELOPMENT ON FRIDAY OR SATURDAY,  
AS THE SYSTEM MOVES NORTHEASTWARD AT AROUND 15 MPH, AND EMERGES  
OFFSHORE THE EAST COAST OF THE UNITED STATES AND INTO THE WESTERN  
ATLANTIC OCEAN.  
 
REGARDLESS OF DEVELOPMENT, HEAVY RAINFALL WITH THE POTENTIAL FOR  
WIDESPREAD AND LIFE-THREATENING FLASH FLOODING IS LIKELY ACROSS  
PORTIONS OF THE SOUTHEAST UNITED STATES DURING THE NEXT DAY  
OR TWO. ADDITIONAL INFORMATION ON THE RAINFALL POTENTIAL CAN BE  
FOUND IN RAINFALL FORECASTS AND EXCESSIVE RAINFALL OUTLOOKS FROM  
THE WEATHER PREDICTION CENTER ONLINE AT WPC.NCEP.NOAA.GOV.  
MORE INFORMATION ON THIS SYSTEM, INCLUDING GALE WARNINGS, IS  
AVAILABLE IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER  
SERVICE UNDER AWIPS HEADER NFDHSFAT1, WMO HEADER FZNT01 KWBC, AND  
ONLINE AT OCEAN.WEATHER.GOV/SHTML/NFDHSFAT1.PHP  
FORMATION CHANCE THROUGH 48 HOURS...LOW...10 PERCENT.  
FORMATION CHANCE THROUGH 7 DAYS...LOW...10 PERCENT.  
 
 
FORECASTER KELLY  
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