107  
WTPZ35 KNHC 272034  
TCPEP5  
 
BULLETIN  
TROPICAL STORM SELMA ADVISORY NUMBER 3  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP202017  
400 PM CDT FRI OCT 27 2017  
 
...SELMA EXPECTED TO MAKE LANDFALL ALONG THE COAST OF EL  
SALVADOR OR GUATEMALA ON SATURDAY...  
 
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION  
----------------------------------------------  
LOCATION...11.7N 89.4W  
ABOUT 140 MI...225 KM S OF SAN SALVADOR EL SALVADOR  
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H  
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 7 MPH...11 KM/H  
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES  
 
WATCHES AND WARNINGS  
--------------------  
CHANGES WITH THIS ADVISORY:  
 
NONE  
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:  
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...  
* ENTIRE COAST OF EL SALVADOR  
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...  
* PACIFIC COAST OF GUATEMALA  
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE  
EXPECTED SOMEWHERE WITHIN THE WARNING AREA, IN THIS CASE WITHIN THE  
NEXT 24 HOURS.  
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE  
POSSIBLE WITHIN THE WATCH AREA, IN THIS CASE WITHIN THE NEXT 24  
HOURS.  
 
INTERESTS IN 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 PM CDT (2100 UTC), THE CENTER OF TROPICAL STORM SELMA WAS  
LOCATED NEAR LATITUDE 11.7 NORTH, LONGITUDE 89.4 WEST. SELMA IS  
MOVING TOWARD THE NORTH-NORTHWEST NEAR 7 MPH (11 KM/H), AND THE  
CYCLONE IS EXPECTED TO TURN TOWARD THE NORTH BY EARLY SATURDAY.  
ON THE FORECAST TRACK, THE CENTER OF SELMA IS FORECAST TO MAKE  
LANDFALL ALONG THE COAST OF EL SALVADOR OR GUATEMALA ON SATURDAY.  
 
MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH (65 KM/H) WITH HIGHER GUSTS.  
LITTLE CHANGE IN STRENGTH IS FORECAST BEFORE SELMA REACHES THE  
COAST OF CENTRAL AMERICA. RAPID WEAKENING IS FORECAST AFTER  
LANDFALL AND SELMA IS EXPECTED TO DISSIPATE OVER THE MOUNTAINS OF  
CENTRAL AMERICA SATURDAY NIGHT OR EARLY SUNDAY.  
 
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 OVER 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. TROPICAL STORM CONDITIONS  
ARE POSSIBLE WITHIN THE WATCH AREA BY EARLY SATURDAY.  
 
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 PM CDT.  
NEXT COMPLETE ADVISORY AT 1000 PM CDT.  
 

 
FORECASTER BROWN  
 
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