873  
WTPZ35 KNHC 270850  
TCPEP5  
 
BULLETIN  
TROPICAL STORM SELMA ADVISORY NUMBER 1  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP202017  
400 AM CDT FRI OCT 27 2017  
 
...SELMA HAS FORMED, TROPICAL STORM WARNING ISSUED FOR EL  
SALVADOR...  
 
SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION  
----------------------------------------------  
LOCATION...10.7N 89.5W  
ABOUT 210 MI...335 KM S OF SAN SALVADOR EL SALVADOR  
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H  
PRESENT MOVEMENT...NW OR 315 DEGREES AT 5 MPH...7 KM/H  
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES  
 
WATCHES AND WARNINGS  
--------------------  
CHANGES WITH THIS ADVISORY:  
 
THE GOVERNMENT OF EL SALVADOR HAS ISSUED A TROPICAL STORM WARNING  
FOR THE ENTIRE COAST OF EL SALVADOR FROM THE GUATEMALA/EL SALVADOR  
BORDER EASTWARD TO THE EL SALVADOR/HONDURAS BORDER.  
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:  
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...  
* ENTIRE COAST OF EL SALVADOR  
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE  
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.  
 
INTERESTS IN SOUTHEASTERN GUATEMALA AND WESTERN HONDURAS SHOULD  
MONITOR THE PROGRESS OF SELMA.  
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA, PLEASE MONITOR  
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.  
 
DISCUSSION AND 48-HOUR OUTLOOK  
------------------------------  
AT 400 AM CDT (0900 UTC), THE CENTER OF TROPICAL STORM SELMA WAS  
LOCATED NEAR LATITUDE 10.7 NORTH, LONGITUDE 89.5 WEST. SELMA IS  
MOVING TOWARD THE NORTHWEST NEAR 5 MPH (7 KM/H) AND THE CYCLONE IS  
EXPECTED TO GRADUALLY TURN TOWARD THE NORTH BY EARLY SATURDAY. ON  
THE FORECAST TRACK, THE CENTER OF SELMA WILL BE APPROACHING THE  
COAST OF EL SALVADOR ON SATURDAY.  
 
SATELLITE DATA INDICATE THAT MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH  
(65 KM/H) WITH HIGHER GUSTS. SOME INCREASE IN STRENGTH IS  
FORECAST OVER THE NEXT DAY OR SO BEFORE SELMA MAKES LANDFALL.  
 
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 45 MILES (75 KM)  
FROM THE CENTER.  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB (29.68 INCHES).  
 
HAZARDS AFFECTING LAND  
----------------------  
RAINFALL: SELMA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF  
3 TO 6 INCHES OF EL SALVADOR, SOUTHERN GUATEMALA, SOUTHERN HONDURAS  
AND FAR WESTERN NICARAGUA OVER THE NEXT COUPLE OF DAYS. ISOLATED  
MAXIMUM AMOUNTS OF 10 INCHES ARE POSSIBLE IN EL SALVADOR AND  
SOUTHERN GUATEMALA. THIS RAINFALL COULD CAUSE LIFE-THREATENING  
FLASH FLOODS AND MUDSLIDES.  
 
WIND: TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE  
COAST WITHIN THE WARNING AREA BY EARLY SATURDAY, MAKING OUTSIDE  
PREPARATIONS DIFFICULT OR DANGEROUS.  
 
SURF: SWELLS GENERATED BY SELMA ARE FORECAST TO AFFECT PORTIONS  
OF THE COASTS OF NICARAGUA, HONDURAS, EL SALVADOR AND GUATEMALA  
LATER TODAY. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF  
AND RIP CURRENT CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL  
WEATHER OFFICE.  
 
NEXT ADVISORY  
-------------  
NEXT INTERMEDIATE ADVISORY AT 700 AM CDT.  
NEXT COMPLETE ADVISORY AT 1000 AM CDT.  
 

 
FORECASTER BLAKE  
 
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