WOCN31 CWHX 101745
TROPICAL CYCLONE INFORMATION STATEMENT UPDATED BY THE CANADIAN
HURRICANE CENTRE OF ENVIRONMENT CANADA AT 2:45 PM ADT SATURDAY
10 SEPTEMBER 2011.
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TROPICAL CYCLONE INFORMATION STATEMENT FOR:
      NEWFOUNDLAND.

      FOR POST-TROPICAL STORM KATIA.

      THIS IS THE FINAL FORECAST MESSAGE ON THIS STORM.  THE NEXT
      INTERMEDIATE STATEMENT WILL BE ISSUED AT 6:00 PM ADT AND A
      SUMMARY OF THE STORM WILL INCLUDED.

      POST-TROPICAL STORM KATIA LOCATED EAST OF THE GRAND BANKS.
      CURRENTLY GIVING GALE FORCE WINDS OVER EASTERN SECTIONS OF THE
      GRAND BANKS.

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TROPICAL CYCLONE INFORMATION STATEMENT ENDED FOR:
      NOVA SCOTIA.

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==DISCUSSION==
LOCATION: 44.8 NORTH 41.5 WEST.

ABOUT 920 KILOMETRES EAST SOUTHEAST OF ST. JOHN'S.

MAXIMUM SUSTAINED WINDS: 130 KM/HOUR.

PRESENT MOVEMENT: EAST-NORTHEAST AT 110 KM/H.

MINIMUM CENTRAL PRESSURE: 958 MB.

2. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY.

SEE DETAILS FOR COASTAL INTERESTS BELOW.

A. WIND.

NO WIND IMPACTS EXPECTED OVER LAND AREAS.

B. RAINFALL.

NO RAINFALL EXPECTED OVER LAND AREAS.

C. SURGE/WAVES.

COASTAL WAVES OF UP TO 3 METRES CAN BE EXPECTED ALONG THE SOUTH COAST 
AND EAST COAST OF NEWFOUNDLAND FOR THE REST OF THE DAY.

SPECIAL STATEMENT FOR EASTERN NEWFOUNDLAND:

WITH THE PASSAGE OF HURRICANE KATIA WELL OFFSHORE OF NEWFOUNDLAND, 
ITS RAPID FORWARD SPEED OF TRAVEL OVER THE SOUTHERN GRAND BANKS MAY 
TRIGGER RAPID TIDE-LIKE CHANGES IN HARBOUR WATER LEVELS OVER EASTERN
NEWFOUNDLAND.  THE MOST PROBABLE PERIOD FOR THIS WOULD BE THIS 
AFTERNOON OR EARLY EVENING, AND AREAS MOST PRONE TO THIS RANGE FROM 
THE SOUTHERN AVALON TO THE BONAVISTA PENINSULA.  TROPICAL STORMS THAT 
HAVE RACED ACROSS THE GRAND BANKS (MOVING OVER 100 KM/H) IN THE PAST 
HAVE CAUSED WATER LEVELS IN HARBOURS TO RISE AND FALL 2 OR 3 TIMES 
OVER THE SPAN OF AN HOUR AND FLUCTUATE BY AS MUCH AS 2 OR 3 METRES (6 
TO 10 FEET).  THIS IS AN ADVISORY THAT THIS MAY - REPEAT MAY - OCCUR 
AND INTERESTS ALONG THE COAST SHOULD BE ON THE WATCH FOR THIS 
POSSIBILITY.  PREDICTING THE ACTUAL WATER LEVEL CHANGES FOR VARIOUS 
HARBOURS IS VERY DIFFICULT.  THE HIGH (NATURAL) TIDE IN THE REGION 
WILL BE IN THE 7:30 TO 8:30 PM TIME FRAME TODAY, WHEN SUCH EFFECTS 
WOULD HAVE MORE OF AN IMPACT IF THEY OCCUR.

3. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY.

GALE TO STORM FORCE WINDS ARE CURRENTLY OCCURRING OVER EASTERN
NEWFOUNDLAND MARINE AREAS, BUT SHOULD SUBSIDE LATER THIS EVENING AS 
KATIA MOVES FURTHER AWAY.  GALE TO STORM FORCE WINDS HAVE SHIFTED TO 
NORTHWESTERLY GALES IN THE WAKE OF THE STORM.  THE TAIL OF THE BANKS 
BUOY SHOWED A PRESSURE OF 957 MB AS WELL AS WINDS GUSTING TO 58 KNOTS 
AS KATIA PASSED NEAR IT AROUND 8 AM THIS MORNING.  WAVE HEIGHTS IN 
THE 6 TO 8 METRE RANGE ARE EXPECTED TO GRADUALLY DIMINISH THIS 
EVENING.

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/MERCER/COUTURIER