Hurricane JOHN

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HURRICANE JOHN INTERMEDIATE ADVISORY NUMBER  16A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP112006
500 AM PDT FRI SEP 01 2006

...POWERFUL JOHN HEADING TOWARD SOUTHERN BAJA CALIFORNIA...
 
A HURRICANE WARNING REMAINS IN EFFECT FOR THE ISLAS MARIAS AND THE
SOUTHERN BAJA PENINSULA FROM SAN EVERISTO SOUTHWARD ON THE EAST
COAST...AND FROM BAHIA MAGDALENA SOUTHWARD ON THE WEST COAST.
PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO
COMPLETION.
 
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE CENTRAL BAJA
CALIFORNIA PENINSULA FROM PUNTA ABREOJOS SOUTHWARD TO BAHIA
MAGDALENA ON THE WEST COAST...AND NORTHWARD FROM SAN EVERISTO
TO LORETO ON THE EAST COAST.
 
A HURRICANE WATCH IS IN EFFECT ALONG THE WEST COAST OF
THE BAJA PENINSULA FROM BAHIA MAGDALENA TO PUNTA ABREOJOS.
 
A TROPICAL STORM WATCH IS IN EFFECT ALONG THE EAST COAST OF
THE BAJA PENINSULA FROM LORETO NORTHWARD TO MULEGE.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.
 
AT 500 AM PDT...0900Z...THE CENTER OF HURRICANE JOHN WAS LOCATED
NEAR LATITUDE 21.8 NORTH...LONGITUDE 108.8 WEST OR ABOUT 100 MILES
...160 KM...SOUTHEAST OF THE SOUTHERN TIP OF BAJA CALIFORNIA AND
ABOUT 145 MILES...230 KM...WEST OF LAS ISLAS MARIAS MEXICO.
 
JOHN HAS SLOWED OVERNIGHT AND IS NOW MOVING TOWARD THE NORTHWEST
NEAR 10 MPH...16 KM/HR.  THIS GENERAL MOTION IS EXPECTED TO
CONTINUE FOR THE NEXT 24 HOURS. ON THIS TRACK THE DANGEROUS CORE OF
HURRICANE JOHN WILL PASS NEAR OR OVER BAJA CALIFORNIA LATER TODAY.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 115 MPH...185 KM/HR...WITH HIGHER
GUSTS. JOHN IS A DANGEROUS CATEGORY THREE HURRICANE ON THE
SAFFIR-SIMPSON SCALE. LITTLE CHANGE IN STRENGTH IS FORECAST DURING
THE NEXT 24 HOURS. AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS
CURRENTLY EN-ROUTE TO INVESTIGATE THE INTENSITY OF THE HURRICANE. 
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES...45 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 105
MILES...165 KM.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 960 MB...28.35 INCHES.

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.
 
RAINFALL AMOUNTS OF 6 TO 10 INCHES...WITH ISOLATED MAXIMUM STORM
TOTALS UP TO 18 INCHES...ARE POSSIBLE ALONG THE CENTRAL WEST COAST
OF MAINLAND MEXICO AS WELL AS OVER THE SOUTHERN BAJA PENINSULA.
THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD
SLIDES OVER AREAS OF MOUNTAINOUS TERRAIN.
 
REPEATING THE 500 AM PDT POSITION...21.8 N...108.8 W.  MOVEMENT
TOWARD...NORTHWEST NEAR 10 MPH.  MAXIMUM SUSTAINED WINDS...115 MPH.
MINIMUM CENTRAL PRESSURE...960 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 800 AM PDT.
 
$$
FORECASTER BLAKE/AVILA
 
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