990  
WTPZ35 KNHC 260234  
TCPEP5  
 
BULLETIN  
TROPICAL STORM JOHN ADVISORY NUMBER 13  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP102024  
900 PM CST WED SEP 25 2024  
   
..HURRICANE WARNING EXTENDED WESTWARD  
 
...THREAT OF CATASTROPHIC LIFE-THREATENING FLASH FLOODING AND  
MUDSLIDES CONTINUES OVER PORTIONS OF SOUTHERN MEXICO...  
 
 
SUMMARY OF 900 PM CST...0300 UTC...INFORMATION  
----------------------------------------------  
LOCATION...17.0N 102.1W  
ABOUT 70 MI...110 KM S OF LAZARO CARDENAS MEXICO  
ABOUT 60 MI...95 KM SW OF ZIHUATANEJO MEXICO  
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H  
PRESENT MOVEMENT...NW OR 325 DEGREES AT 5 MPH...7 KM/H  
MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES  
 
 
WATCHES AND WARNINGS  
--------------------  
CHANGES WITH THIS ADVISORY:  
 
THE GOVERNMENT OF MEXICO HAS ISSUED A HURRICANE WARNING FROM LAZARO  
CARDENAS TO PUNTA SAN TELMO.  
 
THE GOVERNMENT OF MEXICO HAS CANCELED THE HURRICANE WATCH FROM  
ACAPULCO TO TECPAN DE GALEANA.  
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:  
 
A HURRICANE WARNING IS IN EFFECT FOR...  
* TECPAN DE GALEANA TO PUNTA SAN TELMO  
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...  
* PUNTA MALDONADO TO TECPAN DE GALEANA  
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED  
SOMEWHERE WITHIN THE WARNING AREA, IN THIS CASE WITHIN 24 TO 36  
HOURS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED  
TO COMPLETION.  
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE  
EXPECTED SOMEWHERE WITHIN THE WARNING AREA, IN THIS CASE WITHIN 12  
HOURS.  
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA, PLEASE MONITOR  
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.  
 
 
DISCUSSION AND OUTLOOK  
----------------------  
AT 900 PM CST (0300 UTC), THE CENTER OF TROPICAL STORM JOHN WAS  
LOCATED NEAR LATITUDE 17.0 NORTH, LONGITUDE 102.1 WEST. JOHN IS  
MOVING TOWARD THE NORTHWEST NEAR 5 MPH (7 KM/H) AND THIS MOTION IS  
EXPECTED TO CONTINUE FOR THE NEXT DAY OR TWO, FOLLOWED BY A GRADUAL  
TURN TO THE WEST-NORTHWEST ON FRIDAY. ON THE FORECAST TRACK, THE  
CENTER OF JOHN IS FORECAST TO APPROACH THE SOUTHWESTERN COAST OF  
MEXICO ON THURSDAY AND BE INLAND ON FRIDAY.  
 
MAXIMUM SUSTAINED WINDS ARE NEAR 65 MPH (100 KM/H) WITH HIGHER  
GUSTS. JOHN IS FORECAST TO STRENGTHEN TO A HURRICANE BY EARLY  
THURSDAY, WITH ADDITIONAL STRENGTHENING EXPECTED UNTIL THE CENTER  
MOVES INLAND.  
 
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 150 MILES (240 KM)  
FROM THE CENTER.  
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 984 MB (29.06 INCHES).  
 
 
HAZARDS AFFECTING LAND  
----------------------  
RAINFALL: THROUGH FRIDAY, TROPICAL STORM JOHN IS EXPECTED TO PRODUCE  
ADDITIONAL RAINFALL AMOUNTS OF 10 TO 20 INCHES WITH ISOLATED TOTALS  
AROUND 30 INCHES ACROSS PORTIONS OF THE MEXICAN STATES OF GUERRERO,  
OAXACA AND MICHOACAN.  
 
FOR A COMPLETE DEPICTION OF FORECAST RAINFALL ASSOCIATED WITH JOHN,  
PLEASE SEE THE NATIONAL WEATHER SERVICE STORM TOTAL RAINFALL  
GRAPHIC, AVAILABLE AT HURRICANES.GOV/GRAPHICS_EP5.SHTML?RAINQPF  
 
STORM SURGE: A DANGEROUS STORM SURGE IS EXPECTED TO PRODUCE COASTAL  
FLOODING NEAR AND TO THE EAST OF WHERE THE CENTER MAKES LANDFALL.  
NEAR THE COAST, THE SURGE WILL BE ACCOMPANIED BY LARGE AND  
DESTRUCTIVE WAVES.  
 
WIND: HURRICANE CONDITIONS ARE EXPECTED ALONG THE COAST WITHIN THE  
HURRICANE WARNING AREA BY LATE THURSDAY OR THURSDAY NIGHT. WINDS  
ARE EXPECTED TO FIRST REACH TROPICAL STORM STRENGTH WITHIN THE NEXT  
FEW HOURS, MAKING OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS.  
PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO  
COMPLETION.  
 
TROPICAL STORM CONDITIONS ARE CURRENTLY OCCURRING OVER PORTIONS OF  
THE COAST WITHIN THE TROPICAL STORM WARNING AREA, AND SHOULD  
CONTINUE INTO THURSDAY.  
 
SURF: SWELLS ASSOCIATED WITH JOHN ARE FORECAST TO CONTINUE TO  
AFFECT THE COAST OF SOUTHERN AND SOUTHWESTERN MEXICO THROUGH THE  
WEEK, WITH THE POTENTIAL FOR DANGEROUS SURF AND RIP CURRENTS.  
PLEASE SEE LOCAL STATEMENTS FOR MORE INFORMATION.  
 
 
NEXT ADVISORY  
-------------  
NEXT INTERMEDIATE ADVISORY AT 1200 AM CST.  
NEXT COMPLETE ADVISORY AT 300 AM CST.  
 
 
FORECASTER HAGEN  
 
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