WOCN31 CWHX 091745 TROPICAL CYCLONE INFORMATION STATEMENT UPDATED BY THE CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 2:49 PM ADT FRIDAY 9 SEPTEMBER 2011. --------------------------------------------------------------------- TROPICAL CYCLONE INFORMATION STATEMENT FOR: NEWFOUNDLAND NOVA SCOTIA. FOR HURRICANE KATIA. THE NEXT INTERMEDIATE STATEMENT WILL BE ISSUED AT 6:00 PM ADT. FOLLOWED BY THE NEXT FULL STATEMENT ISSUED BY 9:00 PM ADT. LARGE WAVES AND HEAVY SURF ALONG THE ATLANTIC COAST OF NOVA SCOTIA TODAY AND NEWFOUNDLAND SATURDAY - CENTRE TO TRACK WELL SOUTH OF LAND AREAS - STORM TO POSSIBLY HURRICANE-FORCE WINDS OVER CANADIAN OFFSHORE WATERS. --------------------------------------------------------------------- ==DISCUSSION== LOCATION: 39.9 NORTH 64.6 WEST. ABOUT 500 KILOMETRES SOUTHWEST OF HALIFAX. MAXIMUM SUSTAINED WINDS: 130 KM/HOUR. PRESENT MOVEMENT: NORTH-NORTHEAST AT ABOUT 55 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 EARLY SATURDAY FROM A WARM FRONT FORMING AHEAD OF KATIA AS THE HURRICANE BECOMES 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. WE HAVE ALREADY SEEN LARGE WAVES ALONG THE ATLANTIC COAST OF NOVA SCOTIA AND THEY WILL BUILD FURTHER THIS EVENING. WAVES COULD BE BREAKING AT HEIGHTS OF 4 TO 5 METRES (12-15 FEET) LATER THIS EVENING. SIMILAR WAVES CAN BE EXPECTED IN SOUTHERN NEWFOUNDLAND TOMORROW. 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. NEW - 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 SATURDAY AFTERNOON/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 SATURDAY, WHEN SUCH EFFECTS WOULD HAVE MORE OF AN IMPACT WERE THEY OCCUR. 3. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY. COMPUTER MODELS ARE INDICATING THAT THE INTENSITY OF THIS STORM IS LIKELY TO STAY AT CATEGORY-1 STRENGTH AS IT CONTINUES TO TRACK SOUTH OF ATLANTIC CANADA. THE CURRENT FORECASTS FOR THE SOUTHERNMOST CANADIAN MARINE TERRITORY CALL FOR GALE TO STORM FORCE WINDS TODAY AND SATURDAY. HURRICANE FORCE WINDS ARE POSSIBLE OVER THE EXTREME SOUTHERN EDGE OF THE MARITIMES AND NEWFOUNDLAND MARINE FORECAST DISTRICTS. WAVE HEIGHTS WILL BE IN THE 7 TO 10 METRE RANGE OVER THE SOUTHERNMOST PORTIONS OF THE MARINE DISTRICT WITH THE POSSIBILITY OF WAVES EXCEEDING 10 METRES. 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/FOGARTY/MERCER