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NOAA NOAA United States Department of Commerce

Hurricane JOHN


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HURRICANE JOHN INTERMEDIATE ADVISORY NUMBER   9A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP112006
1100 AM PDT WED AUG 30 2006
 
...DANGEROUS CATEGORY FOUR HURRICANE MOVING PARALLEL TO THE WEST
COAST OF MEXICO... 
 
A HURRICANE WARNING REMAINS IN EFFECT FROM LAZARO CARDENAS WESTWARD
TO CABO CORRIENTES.
 
A HURRICANE WATCH IS IN EFFECT FOR THE ISLAS MARIAS.  A HURRICANE
WATCH REMAINS IN EFFECT FROM TECPAN DE GALEANA TO LAZARO
CARDENAS. 

A TROPICAL STORM WARNING IS IN EFFECT FROM ACAPULCO TO LAZARO
CARDENAS.
 
A TROPICAL STORM WATCH REMAINS IN EFFECT FROM CABO CORRIENTES TO EL
ROBLITO.

A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS.
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS.  PREPARATIONS TO
PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS.
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.
 
AT 1100 AM PDT...1800Z...THE CENTER OF HURRICANE JOHN WAS LOCATED
NEAR LATITUDE 17.1 NORTH...LONGITUDE 102.8 WEST OR ABOUT 170 MILES
...270 KM...SOUTHEAST OF MANZANILLO MEXICO AND ABOUT 70 MILES...115
KM...SOUTHWEST OF LAZARO CARDENAS MEXICO.
 
JOHN IS MOVING TOWARD THE NORTHWEST NEAR 14 MPH...22 KM/HR...AND
THIS MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 135 MPH...215 KM/HR...WITH HIGHER
GUSTS. JOHN IS A DANGEROUS CATEGORY FOUR HURRICANE ON THE
SAFFIR-SIMPSON SCALE.  SOME ADDITIONAL STRENGTHENING IS FORECAST
DURING THE NEXT 24 HOURS. WHILE THE CENTER OF JOHN IS FORECAST TO
REMAIN JUST OFFSHORE...HURRICANE FORCE WINDS ARE STILL EXPECTED TO
REACH THE COAST WITHIN THE WARNING AREA.

RECENTLY AN OBSERVING STATION FROM THE MEXICAN NAVY AT PUERTO
VICENTE...NEAR ZIHUATANEJO...ALONG THE WEST COAST OF MEXICO
REPORTED SUSTAINED WINDS OF TROPICAL STORM FORCE. 
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 50 MILES...85 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140
MILES...220 KM.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 948 MB...27.99 INCHES.
 
RAINFALL AMOUNTS OF 4 TO 8 INCHES...WITH ISOLATED TOTALS UP TO
12 INCHES...ARE POSSIBLE ALONG THE SOUTHERN COAST OF MEXICO WITHIN
THE WARNING AREAS.  THESE AMOUNTS COULD CAUSE LIFE-THREATENING
FLASH FLOODS AND MUD SLIDES OVER AREAS OF MOUNTAINOUS TERRAIN.
 
COASTAL STORM SURGE FLOODING OF UP TO 5 FEET ABOVE NORMAL TIDE
LEVELS...ALONG WITH LARGE AND DANGEROUS BATTERING WAVES...CAN BE
EXPECTED IN AREAS OF ONSHORE FLOW NEAR THE PATH OF THE CENTER OF THE
HURRICANE.
 
REPEATING THE 1100 AM PDT POSITION...17.1 N...102.8 W.  MOVEMENT
TOWARD...NORTHWEST NEAR 14 MPH.  MAXIMUM SUSTAINED WINDS...135 MPH.
MINIMUM CENTRAL PRESSURE...948 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
200 PM PDT.
 
$$
FORECASTER MAINELLI/PASCH
 
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