000
WTNT31 KNHC 121806
TCPAT1
BULLETIN
HURRICANE IGOR SPECIAL ADVISORY NUMBER  18
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL     AL112010
230 PM AST SUN SEP 12 2010
 
...IGOR RAPIDLY INTENSIFIES INTO A CATEGORY FOUR HURRICANE...
 
 
SUMMARY OF 230 PM AST...1830 UTC...INFORMATION
----------------------------------------------
LOCATION...17.7N 46.1W
ABOUT 1120 MI...1800 KM E OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...135 MPH...215 KM/HR
PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/HR
MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES
 
 
WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
 
 
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 230 PM AST...1830 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED
NEAR LATITUDE 17.7 NORTH...LONGITUDE 46.1 WEST. IGOR IS MOVING
TOWARD THE WEST NEAR 14 MPH...22 KM/HR.  A TURN TOWARD THE
WEST-NORTHWEST IS EXPECTED ON TUESDAY.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 135 MPH...215 KM/HR...WITH HIGHER
GUSTS.  IGOR IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE.  SOME ADDITIONAL STRENGTHENING IS FORECAST
DURING THE NEXT 48 HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 40 MILES...65 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 160
MILES...260 KM.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS 950 MB...28.05 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
NONE.
 
 
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 PM AST.
 
$$
FORECASTER ROBERTS/BRENNAN