WOCN31 CWHX 100545
TROPICAL CYCLONE INFORMATION STATEMENT UPDATED BY THE CANADIAN
HURRICANE CENTRE OF ENVIRONMENT CANADA AT 2:48 AM ADT SATURDAY
10 SEPTEMBER 2011.
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TROPICAL CYCLONE INFORMATION STATEMENT FOR:
      NEWFOUNDLAND
      NOVA SCOTIA.

      FOR HURRICANE KATIA.

      THE NEXT INTERMEDIATE STATEMENT WILL BE ISSUED AT 6:00 AM ADT.
      FOLLOWED BY THE NEXT FULL STATEMENT ISSUED BY 9:00 AM ADT.

      KATIA APPROACHING THE SOUTHERN EDGE OF THE GRAND BANKS - CENTRE
      WILL REMAIN WELL AWAY FROM CANADIAN SHORES.  STORM OR POSSIBLY
      HURRICANE-FORCE WINDS OCCURRING OVER CANADIAN OFFSHORE WATERS.

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==DISCUSSION==
LOCATION: 42.0 NORTH 55.7 WEST.

ABOUT 410 KILOMETRES EAST-SOUTHEAST OF SABLE ISLAND.

MAXIMUM SUSTAINED WINDS: 130 KM/HOUR.

PRESENT MOVEMENT: EAST-NORTHEAST AT 61 KM/H.

MINIMUM CENTRAL PRESSURE: 965 MB.

2. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY.

GENERALLY ONLY HIGH CLOUDINESS EXPECTED INLAND WITH THE PASSAGE OF 
KATIA OFFSHORE.  ADDITIONAL DETAILS FOR COASTAL INTERESTS BELOW:

A. WIND.

NO WIND IMPACTS EXPECTED OVER LAND AREAS.

B. RAINFALL.

NO RAINFALL EXPECTED OVER LAND.  HOWEVER, THERE IS A SLIGHT CHANCE OF 
THE NORTHERN EDGE OF RAIN REACHING THE AVALON PENINSULA BRIEFLY THIS 
MORNING FROM A WARM FRONT FORMING AHEAD OF KATIA AS THE HURRICANE 
TRANSITIONS TO POST-TROPICAL.

C. SURGE/WAVES.

THE PRIMARY IMPACT OF THIS STORM FOR LAND TERRITORY WILL BE THE 
SOUTH-FACING COASTLINES OF NOVA SCOTIA AND NEWFOUNDLAND WITH LARGE 
SWELLS BREAKING ONSHORE.  AS KATIA SPEEDS AWAY TODAY LARGE WAVES 
ALONG THE ATLANTIC COAST OF NOVA SCOTIA WILL SLOWLY SUBSIDE.
BREAKING WAVES OF 4 TO 5 METRES COULD IMPACT COASTLINES IN SOUTHERN
NEWFOUNDLAND TODAY.

SPECTATORS SHOULD STAY WELL BACK FROM THE SURF ZONE.  DANGEROUS RIP 
CURRENTS CAN DEVELOP AT SOME BEACHES, THUS VENTURING INTO THE WATER 
IS STRONGLY DISCOURAGED.

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 SUDDEN TIDE-LIKE FLUCTUATIONS IN HARBOUR WATER LEVELS OVER 
EASTERN NEWFOUNDLAND.  THE MOST PROBABLE PERIOD FOR THIS EFFECT WOULD 
BE THIS AFTERNOON OR EARLY EVENING, AND AREAS MOST SUSCEPTIBLE TO 
THIS RANGE FROM THE SOUTHERN AVALON TO THE BONAVISTA PENINSULA. 
TROPICAL STORMS THAT HAVE TRACKED RAPIDLY (MOVING OVER 100 KM/H) 
ACROSS THE GRAND BANKS IN THE PAST HAVE TRIGGERED WATER LEVELS 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 AT 
LEAST 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 TIMEFRAME 
TODAY, WHEN SUCH EFFECTS WOULD HAVE MORE OF AN IMPACT WERE THEY 
OCCUR.

3. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY.

GALE TO STORM FORCE WINDS ARE CURRENTLY OCCURRING OVER SOUTHEASTERN 
MARITIMES MARINE AREAS, BUT SHOULD SUBSIDE LATER THIS MORNING AS 
KATIA MOVES AWAY.  THE LAURENTIAN FAN WEATHER BUOY REPORTED A PEAK 
WIND OF 58 KNOTS (108 KM/H) AS KATIA PASSED SOUTH OF IT AT 2 AM.
GALE AND STORM FORCE WINDS WILL MOVE INTO THE SOUTHERN GRAND BANKS 
EARLY THIS MORNING.  COINCIDING WAVE HEIGHTS IN THE 6 TO 8 METRE 
RANGE ARE EXPECTED WITH THESE WINDS NEAR THE TRACK OF KATIA.

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