951
WTPZ35 KNHC 251752
TCPEP5
BULLETIN
TROPICAL STORM JOHN INTERMEDIATE ADVISORY NUMBER 11A
NWS NATIONAL HURRICANE CENTER MIAMI FL EP102024
1200 PM CST WED SEP 25 2024
..JOHN STRENGTHENING
...HURRICANE WATCH AND TROPICAL STORM WARNING IN EFFECT FOR
SOUTHERN AND SOUTHWESTERN MEXICO...
SUMMARY OF 1200 PM CST...1800 UTC...INFORMATION
-----------------------------------------------
LOCATION...16.5N 101.4W
ABOUT 105 MI...170 KM WSW OF ACAPULCO MEXICO
ABOUT 85 MI...135 KM S OF ZIHUATANEJO MEXICO
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NNE OR 30 DEGREES AT 3 MPH...5 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
NONE.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A HURRICANE WATCH IS IN EFFECT FOR...
* ACAPULCO TO ZIHUATANEJO
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* PUNTA MALDONADO TO LAZARO CARDENAS
A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA, IN THIS CASE WITHIN 12 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 1200 PM CST (1800 UTC), THE CENTER OF TROPICAL STORM JOHN WAS
LOCATED NEAR LATITUDE 16.5 NORTH, LONGITUDE 101.4 WEST. JOHN IS
MOVING TOWARD THE NORTH-NORTHEAST NEAR 3 MPH (5 KM/H). A SLOW
MOTION TO THE NORTH IS EXPECTED LATER TODAY. ON THE FORECAST TRACK,
THE CENTER OF THE SYSTEM IS FORECAST TO APPROACH THE SOUTHERN AND
SOUTHWESTERN COAST OF MEXICO ON EARLY THURSDAY AND BE INLAND ON
FRIDAY.
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 45 MPH (75 KM/H) WITH
HIGHER GUSTS. JOHN IS FORECAST TO STRENGTHEN AS IT APPROACHES THE
COAST OF SOUTHERN MEXICO ON THURSDAY.
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 150 MILES (240 KM)
FROM THE CENTER.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 999 MB (29.50 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 THE MEXICAN STATES OF GUERRERO, OAXACA,
COASTAL CHIAPAS, AND COASTAL MICHOACA.
FOR A COMPLETE DEPICTION OF FORECAST RAINFALL ASSOCIATED WITH
TROPICAL STORM 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 POSSIBLE ALONG THE COAST WITHIN THE
HURRICANE WATCH AREA THURSDAY. WINDS ARE EXPECTED TO FIRST REACH
TROPICAL STORM STRENGTH AS EARLY AS TONIGHT, MAKING OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE COAST
WITHIN THE TROPICAL STORM WARNING AREA AS EARLY AS TONIGHT.
SURF: SWELLS ASSOCIATED WITH JOHN ARE FORECAST TO CONTINUE TO
AFFECT THE COAST OF SOUTHERN MEXICO THROUGH THE WEEK, WITH THE
POTENTIAL FOR DANGEROUS SURF AND RIP CURRENTS. PLEASE SEE LOCAL
STATEMENTS FOR MORE INFORMATION.
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 300 PM CST.
FORECASTER BUCCI/R. ZELINSKY
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