[Tropical] Public Tropical Cyclone Advisory

[EMWIN Server]

WTNT33 KNHC 172030
TCPAT3
BULLETIN
HURRICANE HELENE ADVISORY NUMBER  22
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL082006
500 PM AST SUN SEP 17 2006

...NOAA PLANE CONFIRMS THAT HELENE IS A STRONG CATEGORY TWO
HURRICANE...

AT 500 PM AST...2100Z...THE CENTER OF HURRICANE HELENE WAS LOCATED
NEAR LATITUDE 21.2 NORTH...LONGITUDE 49.3 WEST OR ABOUT 920 MILES...
1480 KM...EAST-NORTHEAST OF THE NORTHERN LEEWARD ISLANDS.

HELENE IS MOVING TOWARD THE NORTHWEST NEAR 9 MPH...15 KM/HR. A
GRADUAL TURN TO THE WEST-NORTHWEST IS EXPECTED ON MONDAY.

DATA FROM A NOAA PLANE INDICATE THAT MAXIMUM SUSTAINED WINDS ARE
NEAR 105 MPH...165 KM/HR...WITH HIGHER GUSTS.  SOME STRENGTHENING
IS POSSIBLE DURING THE NEXT 24 HOURS.

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 40 MILES...65 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175
MILES...280 KM.

MINIMUM CENTRAL PRESSURE RECENTLY MEASURED BY A NOAA RECONNAISSANCE
PLANE WAS 970 MB...28.64 INCHES.

REPEATING THE 500 PM AST POSITION...21.2 N...49.3 W.  MOVEMENT
TOWARD...NORTHWEST NEAR 9 MPH.  MAXIMUM SUSTAINED WINDS...105 MPH.
MINIMUM CENTRAL PRESSURE...970 MB.

THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
1100 PM AST.

$$

FORECASTER AVILA
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