WOCN31 CWHX 272345 TROPICAL CYCLONE INFORMATION STATEMENT ISSUED BY THE CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 8:37 PM ADT SATURDAY 27 AUGUST 2011. --------------------------------------------------------------------- TROPICAL CYCLONE INFORMATION STATEMENT FOR: ATLANTIC PROVINCES SOUTHERN QUEBEC. FOR HURRICANE IRENE. THE NEXT STATEMENT WILL BE ISSUED BY 3:00 AM ADT. VERY LARGE POST-TROPICAL STORM IRENE TO SPREAD RAIN AND WIND OVER EASTERN CANADA SUNDAY AND MONDAY. --------------------------------------------------------------------- ==DISCUSSION== 1. SUMMARY OF BASIC INFORMATION AT 9.00 PM ADT. LOCATION 60 KILOMETERS SOUTH OF WALLOPS ISLAND, VIRGINIA. MAXIMUM SUSTAINED WINDS: 130 KM/H. PRESENT MOVEMENT: NORTH NORTHEAST AT 20 KM/H. MINIMUM CENTRAL PRESSURE: 950 MB. 2. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY. THE CANADIAN HURRICANE CENTRE HAS ISSUED TROPICAL STORM WARNINGS FOR THE FUNDY COASTLINES OF NEW BRUNSWICK AND NOVE SCOTIA AS WELL AS THE ATLANTIC COAST OF NOVA SCOTIA SOUTHWEST OF PORTER'S LAKE. HURRICANE IRENE WILL HUG THE U.S MID-ATLANTIC COASTLINE TONIGHT AS IT BEGINS TRANSITIONING INTO A POST-TROPICAL SYSTEM BEFORE AFFECTING EASTERN CANADIAN TERRITORY LATER ON SUNDAY AND MONDAY. AS IT TRANSITIONS, WIND AND RAINFALL WILL SPREAD FARTHER OUT FROM THE STORM CENTER. IT IS EXPECTED THAT THE HEAVIEST RAINFALL WILL OCCUR TO THE LEFT OF TRACK AND HIGHEST WINDS TO THE RIGHT. IT IS EMPHASIZED THAT A SHIFT IN THE EXACT TRACK OR INTENSITY OF IRENE AS IT ENTERS CANADIAN TERRITORY LATE SUNDAY AND MONDAY IS BECOMING MUCH LESS IMPORTANT AS IRENE IS A LARGE STORM SYSTEM WITH FAR REACHING IMPACTS. A. WIND. THE ATLANTIC STORM PREDICTION CENTRE HAS ISSUED WIND WARNINGS FOR MAINLAND NOVA SCOTIA, PRINCE EDWARD ISLAND, AND ALL BUT THE NORTHWESTERN CORNER OF NEW BRUNSWICK. WINDS GUSTS BETWEEN 90 AND 110 KM/H ARE POSSIBLE SUNDAY NIGHT. THE QUEBEC STORM PREDICTION CENTRE HAS ISSUED WIND WARNINGS FOR PORTIONS OF THE ST. LAWRENCE RIVER VALLEY AND THE GASPÉ REGIONS OF QUEBEC WHERE WIND GUSTS UP TO 100 KM/H ARE EXPECTED. B. RAINFALL. RAINFALL WARNINGS HAVE BEEN ISSUED FOR ALL BUT EASTERNMOST PORTIONS OF NEW BRUNSWICK. RAINFALL AMOUNTS OF 50 TO 80 MILLIMETERS ARE EXPECTED WITH THE POSSIBILITY SOME LOCAL AMOUNTS IN THE NORTHWEST COULD EXCEED 100 MILLIMETERS THROUGH MONDAY MORNING. THE QUEBEC STORM PREDICTION CENTRE HAS ISSUED RAINFALL WARNINGS FOR THE EASTERN TOWNSHIPS EAST OF MONTRÉAL AND THE ST. LAWRENCE RIVER VALLEY. THE RISK OF HIGHEST RAINFALL WILL BE PRIMARILY LEFT OF THE STORM TRACK. IT IS WORTH NOTING THAT MANY PARTS OF EASTERN CANADA HAVE RECEIVED ABOVE NORMAL RAINFALL THIS SUMMER WHICH COULD RAISE THE RISK OF FLOODING. C. SURGE/WAVES. THE POTENTIAL FOR HIGH WINDS PUSHING STORM SURGE AND WAVES FROM THE SOUTHWEST INTO THE BAY OF FUNDY EXISTS WITH THIS STORM. IT IS IMPORTANT TO NOTE THAT SPRING TIDES AROUND MIDNIGHT SUNDAY NIGHT AND MIDDAY MONDAY IN THAT REGION COULD EXACERBATE SURGE/WAVE EFFECTS IF THE STORM WERE TO ARRIVE PRECISELY COINCIDENT WITH THOSE TIDES. AS OF NOW, THERE IS A TIMING UNCERTAINTY OF +/- 8 HOURS WITH THIS STORM. HIGHER THAN NORMAL WATER LEVELS AND POUNDING SURF ARE ALSO POSSIBLE THROUGHOUT THE MARITIME PROVINCES AND EASTERN PORTIONS OF QUEBEC, AS WELL AS THE ST. LAWRENCE RIVER/GULF REGION WITH THE ARRIVAL OF THE STORM SUNDAY NIGHT AND MONDAY. 3. MARINE IMPACTS AND WARNINGS SUMMARY. THE ATLANTIC STORM PREDICTION CENTRE HAS ISSUED GALE AND STORM FORCE WIND WARNINGS FOR WESTERNMOST MARINE AREAS BEGINNING SUNDAY EVENING. THE GALE WARNINGS WILL LIKELY BE EXPANDED TO PORTIONS OF THE GULF OF ST. LAWRENCE ON MONDAY. THE QUEBEC STORM PREDICTION CENTRE HAS ISSUED GALE AND STORM FORCE WIND WARNINGS FOR AREAS OF THE ST. LAWRENCE RIVER VALLEY. WAVE HEIGHTS OF 6 TO 8 METERS ARE POSSIBLE OVER WESTERN MARITIME WATERS IN THE BAY OF FUNDY LATE SUNDAY OR EARLY MONDAY MORNING. LARGE WAVES COULD OCCUR OVER PORTIONS OF THE GULF OF ST. LAWRENCE ON MONDAY. VISIT WEATHEROFFICE.GC.CA/HURRICANE (ALL IN LOWER CASE) FOR THE LATEST: - FORECAST POSITION, CENTRAL PRESSURE TABLE. - STRENGTH AND PREDICTED WIND RADII TABLE. - HURRICANE TRACK INFORMATION MAP. - TECHNICAL DISCUSSION. PLEASE ALSO REFER TO THE PUBLIC AND MARINE FORECASTS AND WARNINGS ISSUED BY ENVIRONMENT CANADA FOR YOUR AREA. END/