FXCN31 CWHX 291200
TROPICAL CYCLONE TECHNICAL INFORMATION STATEMENT ISSUED BY THE 
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 9.00 AM ADT
MONDAY 29 AUGUST 2011.

THE NEXT STATEMENT WILL BE ISSUED BY 3.00 PM ADT

1. CURRENT POSITION, STRENGTH, CENTRAL PRESSURE AND MOTION

AT 9.00 AM ADT, POST-TROPICAL STORM IRENE WAS LOCATED NEAR
LATITUDE 48.6 N AND LONGITUDE 67.9 W , ABOUT 30 NAUTICAL MILES
OR 55 KM SOUTH SOUTHEAST OF BAIE COMEAU. MAXIMUM SUSTAINED
WINDS ARE ESTIMATED AT 50 KNOTS ( 93 KM/H ) AND CENTRAL
PRESSURE AT 985 MB. IRENE IS MOVING NORTHEAST AT 56 KNOTS ( 45
KM/H ).

2. FORECAST POSITION, CENTRAL PRESSURE AND STRENGTH

DATE     TIME     LAT    LON   MSLP  MAX WIND
          ADT                    MB  KTS  KMH
AUG 29  9.00 AM  48.6N  67.9W   985   50   93 POST-TROPICAL
AUG 29  9.00 PM  52.5N  62.5W   988   50   93 POST-TROPICAL
AUG 30  9.00 AM  55.4N  55.6W   989   45   83 POST-TROPICAL
AUG 30  9.00 PM  57.5N  48.0W   989   50   93 POST-TROPICAL

3. TECHNICAL DISCUSSION

A. ANALYSIS
POST-TROPICAL STORM IRENE CONTINUES TO DEVELOP AN ELONGATED AND 
BROADENING LOW PRESSURE CENTRE AS WELL AS INDICATIONS OF WARM 
FRONTOGENESIS AHEAD OF IT. POSITION IS BASED PRIMARILY ON SURFACE 
OBSERVATIONS AND SATELLITE IMAGERY. THE AREA OF HEAVY RAINFALL HAS 
MOVED WELL NORTH AND WEST OF THE ELONGATED CENTRE, WHILE SOUTH OF
THE TRACK THE SOUTHERN MARITIMES IS EXPERIENCING VERY GUSTY WINDS. 
GALES EXTEND WELL OVER 300 NM SOUTHEAST OF THE SYSTEM.


B. PROGNOSTIC
AS A LARGE POST-TROPICAL SYSTEM, IRENE IS NOT EXPECTED TO WEAKEN MUCH 
FURTHER AS IT CONTINUES TO MOVE ACROSS SOUTHEASTERN QUEBEC AND
IS EXPECTED TO MAINTAIN ITS LARGE WIND FIELD. WE MAINTAIN THIS AS A 
50 KNOT SYSTEM THROUGH LATE TONIGHT, GIVEN THAT THERE WILL BE
WIND ENHANCEMENT OVER CERTAIN BAYS AND COASTLINES AROUND ATLANTIC 
CANADA.

WHEN THE POST-TROPICAL STORM MOVES INTO THE LABRADOR SEA AS A PURELY 
BAROCLINIC SYSTEM, SOME FURTHER INTENSIFICATION IS POSSIBLE.


C. PREDICTED WIND RADII (NM)

TIME          GALES           STORMS            HURRICANE
         NE  SE  SW  NW    NE  SE  SW  NW    NE  SE  SW  NW
29/12Z  220 335 155  95    90 110  35  10     0   0   0   0
30/00Z  205 340 170  80    65  80  15   0     0   0   0   0
30/12Z  195 335 180  75     0   0   0   0     0   0   0   0
31/00Z  185 325 180  75     0   0  70  50     0   0   0   0

END HATT/BORGEL