FXCN31 CWHX 290600
TROPICAL CYCLONE TECHNICAL INFORMATION STATEMENT ISSUED BY THE 
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 3.00 AM ADT
MONDAY 29 AUGUST 2011.

THE NEXT STATEMENT WILL BE ISSUED BY 9.00 AM ADT

1. CURRENT POSITION, STRENGTH, CENTRAL PRESSURE AND MOTION

AT 3.00 AM ADT , POST-TROPICAL STORM IRENE WAS LOCATED NEAR
LATITUDE 46.5 N AND LONGITUDE 70.2 W , ABOUT 50 NAUTICAL MILES
OR 95 KM EAST SOUTHEAST OF QUEBEC CITY. MAXIMUM SUSTAINED
WINDS ARE ESTIMATED AT 50 KNOTS ( 93 KM/H ) AND CENTRAL
PRESSURE AT 980 MB. IRENE IS MOVING NORTHEAST AT 25 KNOTS ( 45
KM/H ).

2. FORECAST POSITION, CENTRAL PRESSURE AND STRENGTH

DATE     TIME     LAT    LON   MSLP  MAX WIND
          ADT                    MB  KTS  KMH
AUG 29  3.00 AM  46.5N  70.2W   980   50   93 POST-TROPICAL
AUG 29  3.00 PM  50.8N  65.6W   982   50   93 POST-TROPICAL
AUG 30  3.00 AM  54.1N  59.4W   984   50   93 POST-TROPICAL
AUG 30  3.00 PM  56.6N  51.9W   988   45   83 POST-TROPICAL
AUG 31  3.00 AM  58.5N  44.0W   990   40   74 POST-TROPICAL

3. TECHNICAL DISCUSSION

A. ANALYSIS
POST-TROPICAL STORM IRENE HAS AN ELONGATED LOW PRESSURE CENTRE
AND IS EMBEDDED WITHIN A FRONTAL ZONE. TEMPERATURES NORTH AND WEST 
ARE IN THE 10 TO 15 DEG C RANGE. TO THE SOUTH AND EAST THE
AIRMASS IS HIGHLY TROPICAL WITH TEMPERATURES AND DEW POINTS IN
THE 20 TO 25 DEG C RANGE. THE AREA OF HEAVY RAINFALL HAS MOVED
WELL NORTH AND WEST OF THE ELONGATED CENTRE.

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

C. PREDICTED WIND RADII (NM)

TIME          GALES           STORMS            HURRICANE
         NE  SE  SW  NW    NE  SE  SW  NW    NE  SE  SW  NW
29/06Z  230 320 150 105   100 120  45  15     0   0   0   0
29/18Z  210 340 160  85    80 100  25   0     0   0   0   0
30/06Z  200 340 180  75    50  65  20   0     0   0   0   0
30/18Z  190 330 185  75     0   0   0   0     0   0   0   0
31/06Z  180 320 180  75     0   0   0   0     0   0   0   0

END HATT