431   
WOCN31 CWHX 192346  
TROPICAL CYCLONE INFORMATION STATEMENT  
FOR EASTERN CANADA  
UPDATED BY ENVIRONMENT CANADA  
AT 8:46 P.M. ADT MONDAY 19 AUGUST 2024.  
---------------------------------------------------------------------  
TROPICAL CYCLONE INFORMATION STATEMENT FOR:  
      ST. JOHN'S AND VICINITY  
      AVALON PENINSULA NORTH  
      AVALON PENINSULA SOUTHEAST  
      AVALON PENINSULA SOUTHWEST  
      CLARENVILLE AND VICINITY  
      BONAVISTA PENINSULA  
      BURIN PENINSULA  
      SABLE  
      EAST SCOTIAN SLOPE  
      BANQUEREAU  
      LAURENTIAN FAN  
      SOUTHWEST COAST  
      SOUTH COAST  
      EAST COAST  
      NORTHERN GRAND BANKS  
      SOUTHEASTERN GRAND BANKS  
      SOUTHWESTERN GRAND BANKS.  
  
TROPICAL CYCLONE INFORMATION STATEMENT ENDED FOR:  
      GEORGES BANK  
      WEST SCOTIAN SLOPE.  
  
---------------------------------------------------------------------  
==DISCUSSION==  
  
FOR HURRICANE ERNESTO.  
  
AN INTERMEDIATE UPDATE WILL BE PROVIDED BY 12:30 A.M. NDT. THE NEXT   
FULL INFORMATION STATEMENT WILL BE ISSUED BY 3:30 A.M. NDT.   
  
HURRICANE ERNESTO WILL CONTINUE TO ACCELERATE AS IT PASSES SOUTHEAST   
OF THE AVALON PENINSULA LATER THIS EVENING. THE CANADIAN IMPACTS   
EXPECTED ARE MODERATE TO HEAVY SURF ALONG THE ATLANTIC COAST OF NOVA   
SCOTIA, AND A PERIOD OF HEAVY RAIN AND MODERATE WINDS TO   
SOUTHEASTERNMOST NEWFOUNDLAND. LARGE WAVES CAN ALSO BE EXPECTED   
THERE THIS EVENING.   
  
1. SUMMARY OF BASIC INFORMATION AT 9:30 P.M. NDT.   
  
LOCATION: NEAR 45.2 NORTH 54.3 WEST.   
  
ABOUT 190 KILOMETRES SOUTH-SOUTHWEST OF CAPE RACE.   
  
MAXIMUM SUSTAINED WINDS: 140 KM/H.   
  
PRESENT MOVEMENT: NORTHEAST AT 52 KM/H.   
  
MINIMUM CENTRAL PRESSURE: 972 MILLIBARS.   
  
2. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY.   
  
THE ONLY EXPECTED IMPACTS FOR NOVA SCOTIA WILL BE MODERATE TO HEAVY   
SURF CONDITIONS WITH A RISK OF RIP CURRENTS ALONG THE ATLANTIC COAST   
OF THE PROVINCE ENDING LATE THIS EVENING.   
  
HURRICANE ERNESTO WILL BE TRANSITIONING INTO A POST-TROPICAL STORM   
AS IT PASSES SOUTH OF THE AVALON PENINSULA OF NEWFOUNDLAND LATE THIS   
EVENING. IT WILL PASS CLOSE ENOUGH, HOWEVER, TO BRING A PERIOD OF   
HEAVY RAIN AND WIND TO PORTIONS OF THE AVALON, AND TO A LESSER   
EXTENT THE BONAVISTA AND BURIN PENINSULAS. THERE WILL BE LARGE   
BREAKING WAVES GIVING A RISK OF SOME COASTAL FLOODING FOR THE   
SOUTHERN AVALON AND PLACENTIA BAY. THERE COULD BE SOME MINOR DAMAGE   
TO DOCKS AND COASTAL STRUCTURES.   
  
DETAILS:   
  
A. WIND.   
  
THIS EVENING, ERNESTO IS EXPECTED TO TRACK CLOSE ENOUGH TO   
NEWFOUNDLAND TO BRING MODERATE WINDS. HIGHEST WINDS OCCURRING SOUTH   
OF THE STORM TRACK ARE NOT LIKELY TO BE A CONCERN FOR THE ISLAND. IT   
IS IMPORTANT TO STAY UP TO DATE WITH FORECAST UPDATES IN CASE THE   
STORM TRACKS FARTHER NORTH. WIND GUSTS OF 60 TO 80 KM/H ARE   
CURRENTLY FORECAST FOR THE SOUTHERN AVALON THIS EVENING.   
  
B. RAINFALL.   
  
AS ERNESTO PASSES SOUTH OR NEAR THE AVALON PENINSULA, A SHORT PERIOD   
OF HEAVY RAIN IS POSSIBLE OVER ABOUT A 3 HOUR WINDOW, WHEN HOURLY   
RATES OF 20 TO 25 MM/H ARE POSSIBLE. RAINFALL TOTALS MAY REACH 60 TO   
80 MM LOCALLY UNDER THE HEAVIEST RAIN BANDS THIS EVENING AND   
TONIGHT, PARTICULARLY OVER THE SOUTHERN PORTIONS OF THE AVALON.   
AMOUNTS MAY REACH 60 MM IN THE VICINITY OF ST. JOHN'S. RAINFALL   
WARNINGS ARE IN EFFECT FOR THESE AREAS.   
  
C. SURGE/WAVES.   
  
LARGE WAVES HAVE ALREADY REACHED THE SOUTHERN AVALON PENINSULA, AND   
WILL DIMINISH ON TUESDAY. THESE BREAKING WAVES COULD BRING THE   
POSSIBILITY OF SOME COASTAL FLOODING ALONG SOUTHWEST-FACING   
SHORELINES FROM BURIN EAST TO AVALON REGIONS, PARTICULARLY DURING   
HIGH TIDES LATE THIS EVENING AND AGAIN TUESDAY MORNING.   
  
GIVEN THE LARGE SIZE OF THE STORM, LONG-PERIOD OCEAN SWELLS HAVE   
ALREADY REACHED THE ATLANTIC COAST OF NOVA SCOTIA. THESE SWELLS WILL   
CONTINUE TO BRING HAZARDOUS SURF AND POSSIBLE RIP CURRENTS, AND   
BEACHGOERS AND SIGHTSEERS ARE ENCOURAGED TO EXERCISE CAUTION THIS   
EVENING.   
  
3. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY.   
  
HURRICANE FORCE WIND WARNINGS ARE IN EFFECT FOR THE CANADIAN   
OFFSHORE WATERS OF LAURENTIAN FAN AND THE SOUTHWESTERN GRAND BANKS   
FOR TONIGHT. THESE AREAS COULD ALSO SEE SIGNIFICANT WAVE HEIGHTS OF   
10 TO 14 METRES JUST SOUTH OF ERNESTO'S TRACK. PLEASE REFER TO OUR   
LOCAL MARINE FORECASTS FOR DETAILS ON WINDS AND EXPECTED WAVE   
CONDITIONS FOR OFFSHORE WATERS.    
  
FORECASTERS: CLEMENTS/COPP/HATT  
  
PLEASE CONTINUE TO MONITOR ALERTS ISSUED BY THE CANADIAN HURRICANE   
CENTRE AND FORECASTS ISSUED BY ENVIRONMENT CANADA.  
  
HTTP://WEATHER.GC.CA  
  
END/ASPC  
 
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