443  
WOCN31 CWHX 182335  
TROPICAL CYCLONE INFORMATION STATEMENT  
FOR EASTERN CANADA  
UPDATED BY ENVIRONMENT CANADA  
AT 8:35 P.M. ADT SATURDAY 18 SEPTEMBER 2021.  
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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.  
 
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==DISCUSSION==  
 
FOR TROPICAL STORM ODETTE.  
 
THE NEXT INFORMATION STATEMENT WILL BE ISSUED BY 3:30 A.M. NDT.  
 
POST-TROPICAL STORM ODETTE WILL SPREAD RAIN AND WIND OVER  
SOUTHEASTERN NEWFOUNDLAND SUNDAY INTO MONDAY.  
 
1. SUMMARY OF BASIC INFORMATION AT 9:30 P.M. NDT.  
 
LOCATION: 40.0 NORTH 64.3 WEST.  
 
ABOUT 565 KILOMETRES SOUTHWEST OF SABLE ISLAND.  
 
MAXIMUM SUSTAINED WINDS: 75 KILOMETRES PER HOUR.  
 
PRESENT MOVEMENT: NORTHEAST AT 30 KILOMETRES PER HOUR.  
 
MINIMUM CENTRAL PRESSURE: 1002 MILLIBARS.  
 
2. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY.  
 
DISCUSSION: THIS STORM WHICH IS ABOUT TO LEAVE THE WARM WATERS OF  
THE GULF STREAM EXHIBITS THE CHARACTERISTICS OF A STRONG FALL STORM  
THAT PRODUCES STRONG NORTHERLY WINDS AND HEAVY RAIN. A SHARP COLD  
FRONT APPROACHING NEWFOUNDLAND ON SUNDAY WILL INTERACT WITH THE  
MOISTURE FROM THE POST-TROPICAL STORM TO ENHANCE THE RAINFALL OVER  
SOUTHEASTERN PORTIONS OF THE PROVINCE LATE IN THE DAY SUNDAY AND  
SUNDAY NIGHT. RAINFALL AND WIND WARNINGS HAVE BEEN ISSUED FOR  
SOUTHEASTERN NEWFOUNDLAND .  
 
THERE WILL BE SOME MINOR INFLUENCE IN NOVA SCOTIA'S WEATHER WITH  
GUSTY NORTHERLY WINDS ON SUNDAY - GUSTS COULD BE UP TO 70 KM/H IN  
CAPE BRETON. SOME ENHANCED RAINFALL OF AROUND 20 TO 40 MM IS LIKELY  
OVER EASTERN NOVA SCOTIA SUNDAY MORNING.  
 
A. WIND.  
 
FOR NEWFOUNDLAND, STRONG NORTHERLY WINDS GUSTING BETWEEN 80 TO 100  
KM/H ARE LIKELY WITH COASTAL GUSTS TO 120 KM/H OVER THE SOUTHERN  
AVALON PENINSULA. THIS COULD HAVE SOME IMPACTS ON TREES, BUT ALSO ON  
WEAKENED INFRASTRUCTURES IN THE AFTERMATH OF HURRICANE LARRY. THIS  
COULD LEAD TO ADDITIONAL POWER INTERRUPTIONS.  
WIND WARNINGS ARE IN EFFECT FOR THE AVALON AND BURIN PENINSULAS.  
 
B. RAINFALL.  
 
AN AREA OF RAIN ASSOCIATED DIRECTLY WITH THE STORM SHOULD PRODUCE 50  
TO 80 MM WITH THE POSSIBILITY OF 100 MM DURING THE SECOND HALF OF  
SUNDAY THROUGH MONDAY MORNING. IF THE HIGHER AMOUNTS MATERIALIZE,  
SOME LOCAL FLASH-TYPE FLOODING MAY OCCUR IN PRONE AREAS. FORECAST  
GUIDANCE IS ALSO SUGGESTING A SECOND AREA OF MAXIMUM RAINFALL WHICH  
WOULD EXTEND ALONG THE COLD FRONT FROM THE SOUTH COAST TO CENTRAL  
NEWFOUNDLAND, WHERE THUNDERSHOWERS HAVE ALREADY DEVELOPED THIS  
EVENING. AT THIS TIME, AMOUNTS IN THOSE REGIONS ARE NOT ANTICIPATED  
TO EXCEED 50 MM.  
RAINFALL WARNINGS ARE IN EFFECT FOR THE AVALON PENINSULA.  
 
C. SURGE/WAVES.  
 
ALONG THE ATLANTIC COAST OF NOVA SCOTIA, WAVES COULD REACH 2 TO 3  
METRES STARTING SUNDAY MORNING. THESE WAVES ARE EXPECTED TO SUBSIDE  
SUNDAY NIGHT.  
 
AS THE STORM ENTERS THE SOUTHERN GRAND BANKS, HEAVY WAVE ACTION  
ACCOMPANYING THE WINDS CAN BE EXPECTED ALONG NORTHEAST-FACING COASTS  
IN EASTERN NEWFOUNDLAND. WAVES OF 2 TO 3 METRES WILL REACH THE SOUTH  
COAST OF NEWFOUNDLAND SUNDAY EVENING, AND THEN INCREASE TO 3 TO 5  
METRES ALONG THE EAST COAST OF THE AVALON PENINSULA OVERNIGHT SUNDAY  
INTO MONDAY. THESE WAVES ARE EXPECTED TO GRADUALLY SUBSIDE MONDAY  
NIGHT.  
 
STORM SURGE IS NOT EXPECTED TO BE SEVERE.  
 
3. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY.  
 
GALE TO STORM-FORCE WINDS ARE EXPECTED OVER MANY OFFSHORE MARINE  
AREAS INCLUDING THE GRAND BANKS AND SCOTIAN SLOPE WATERS.  
 
FORECASTER(S): COUTURIER / CLEMENTS  
 
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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