000
WTPZ31 KNHC 070251
TCPEP1
 
BULLETIN
TROPICAL STORM IRWIN ADVISORY NUMBER   4
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP112011
800 PM PDT THU OCT 06 2011
 
...IRWIN CONTINUES TO STRENGTHEN...FORECAST TO BECOME A HURRICANE ON
FRIDAY...
 
 
SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...13.4N 119.0W
ABOUT 885 MI...1425 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.35 INCHES
 
 
WATCHES AND WARNINGS
--------------------
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
 
 
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 800 PM PDT...0300 UTC...THE CENTER OF TROPICAL STORM IRWIN WAS
LOCATED NEAR LATITUDE 13.4 NORTH...LONGITUDE 119.0 WEST. IRWIN IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH...17 KM/H.  A TURN
TOWARD THE NORTHWEST AND A DECREASE IN FORWARD SPEED ARE EXPECTED
ON FRIDAY...FOLLOWED BY A TURN TOWARD THE NORTH ON SATURDAY.
 
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR NEAR 65 MPH...100
KM/H...WITH HIGHER GUSTS.  ADDITIONAL STRENGTHENING IS FORECAST
DURING THE NEXT 48 HOURS...AND IRWIN IS EXPECTED TO BECOME A
HURRICANE ON FRIDAY.
 
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 70 MILES...110 KM
FROM THE CENTER.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS 994 MB...29.35 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
NONE
 
 
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...200 AM PDT.
 
$$
FORECASTER BEVEN