063  
AWCA82 TJSJ 201054  
RWSVI  
 
WEATHER SUMMARY FOR THE U.S. VIRGIN ISLANDS  
NATIONAL WEATHER SERVICE SAN JUAN PR  
654 AM AST WED JUN 20 2018  
 
PARTLY TO MOSTLY CLOUDY SKIES PREVAILED ACROSS THE U.S. VIRGIN  
ISLANDS OVERNIGHT. THE STRONGEST ACTIVITY WITH SHOWERS AND  
THUNDERSTORMS WAS OBSERVED ACROSS THE NORTHERN ISLANDS. HOWEVER,  
ST CROIX HAD A FEW SHOWERS MOVING INLAND OVERNIGHT. TEMPERATURES  
WERE IN THE MID TO UPPER 70S AND THE WINDS WERE MAINLY SOUTHEAST  
AT 10 TO 15 MPH.  
 
THE SHOWERS AND ISOLATED THUNDERSTORMS WERE CAUSED BY A TUTT LOW,  
AND A TROPICAL WAVE THAT MOVED TO THE SOUTH OF PUERTO RICO  
YESTERDAY. ALTHOUGH, THE TROPICAL WAVE HAS MOVED OFF TO THE EAST  
LINGERING MOISTURE LEFT BEHIND BY THE TROPICAL WAVE AND A DIGGING  
TUTT LOW WILL CAUSE SHOWERS AND ISOLATED THUNDERSTORMS ONCE AGAIN  
ACROSS MOST OF THE LOCAL WATERS TODAY. SOME OF THESE SHOWERS  
COULD MOVE INLAND AT TIMES THROUGH THE MORNING HOURS. A DRIER  
AIRMASS WILL ENCOMPASS THE REGION WEDNESDAY AFTERNOON INTO  
THURSDAY.  
 
SEAS OF 3 TO 5 FEET WITH WINDS OF 10 TO 15 KNOTS ARE EXPECTED  
ACROSS THE REGIONAL WATERS. SHOWERS AND THUNDERSTORMS ARE EXPECTED  
TO PRODUCE HAZARDOUS MARINE CONDITIONS FROM TIME TO TIME THROUGH  
WEDNESDAY NIGHT.  
 

 
 
THIS PRODUCT IS ISSUED AROUND 5 AM AND 5 PM EACH DAY AND WEATHER  
CONDITIONS MAY CHANGE BETWEEN ISSUANCES. PLEASE VERIFY THE STATUS  
OF ANY WATCHES...WARNINGS OR ADVISORIES MENTIONED IN THIS PRODUCT.  
 
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