Extratropical Storm Arthur select local damage

Extratropical Storm Arthur event summary - Maritimes Data

AWCN14 CWHX 061513
WEATHER SUMMARY FOR NEW BRUNSWICK ISSUED BY ENVIRONMENT CANADA AT 
12:13 P.M. ADT SUNDAY 6 JULY 2014.

POST TROPICAL STORM ARTHUR CROSSED EXTREME SOUTHEASTERN NEW BRUNSWICK 
NEAR MONCTON LATE SATURDAY AFTERNOON JULY 5. THE FOLLOWING IS A
LIST OF RAINFALL TOTALS AND SOME OF THE STRONGEST WINDS THAT
AFFECTED NEW BRUNSWICK.


STATION        RAINFALL TOTALS NEW BRUNSWICK


ST. STEPHEN             143
NOONAN                  140
MILLVILLE               127
MIRAMICHI               122
KESWICK RIVER           120
BATHURST                114
KOUCHBOUGUAC            111
BAS CARAQUET            107
GAGETOWN                102
TRACADIE                101
GRAND MANAN              93
FREDERICTON              92
MECHANIC SETTLEMENT      86
POINT LEPREAU            77
ST. JOHN                 74
GASPé                    67
BAXTER CORNER            61
CHARLO                   60
ST. QUENTIN              54


STATION                 HIGHEST GUST (KILOMETRES PER HOUR)

FREDERICTION            98
BAS CARAQUET            98



END

AWCN11 CWHX 061526
WEATHER SUMMARY FOR NOVA SCOTIA ISSUED BY ENVIRONMENT CANADA AT
12:26 P.M. ADT SUNDAY 6 JULY 2014.

POST TROPICAL STORM ARTHUR AFFECTED NOVA SCOTIA SATURDAY JULY 5.
THE OFFICIAL STATUS OF ARTHUR AT LANDFALL WAS A NEAR 
HURRICANE-STRENGTH POST-TROPICAL STORM WITH MAXIMUM WINDS OF 60
KNOTS (110 KM/H). THE LANDFALL LOCATION OF THE CENTRE WAS IN THE 
VICINITY OF PORT MAITLAND/METEGHAN IN WESTERN NOVA SCOTIA. THE
SYSTEM THEN MOVED NORTHEASTWARD TO MONCTON IN SOUTHEASTERN NEW
BRUNSWICK.

VERY STRONG DAMAGING WINDS AFFECTED NOVA SCOTIA. VERY STRONG WINDS 
AND HEAVY RAIN AFFECTED NEW BRUNSWICK.

THE FOLLOWING IS A LIST OF SOME OF THE MAXIMUM WINDS THAT AFFECTED 
NOVA SCOTIA.


STATION                 HIGHEST GUST (KILOMETRES PER HOUR)

NOVA SCOTIA

HALIFAX INTERNATIONAL   95
STEWIACKE               87
BEAVER ISLAND           93
BRIER ISLAND            128
YARMOUTH                111
GREENWOOD               138
LUNENBURG               108
GRAND ETANG             104
SYDNEY                  83
MCNABS ISLAND           95
BEDFORD BASIN           117
HALIFAX KOOTENAY DND    100
OSBORNE HEAD DND        100

END

AWCN15 CWHX 061537
WEATHER SUMMARY FOR PRINCE EDWARD ISLAND ISSUED BY ENVIRONMENT CANADA 
AT 12:35 P.M. ADT SUNDAY 6 JULY 2014.

POST TROPICAL STORM ARTHUR AFFECTED THE MARITIMES SATURDAY JULY 5. 
THE OFFICIAL STATUS OF ARTHUR AT LANDFALL WAS A NEAR 
HURRICANE-STRENGTH POST-TROPICAL STORM WITH MAXIMUM WINDS OF 60
KNOTS (110 KM/H). THE LANDFALL LOCATION OF THE CENTRE WAS IN THE 
VICINITY OF PORT MAITLAND/METEGHAN IN WESTERN NOVA SCOTIA. THE
SYSTEM THEN MOVED NORTHEASTWARD TO MONCTON IN SOUTHEASTERN NEW
BRUNSWICK AND CROSSED WESTERN PEI EARLY SATURDAY EVENING.

VERY STRONG WINDS AFFECTED NOVA SCOTIA AND PEI. VERY STRONG WINDS
AND HEAVY RAIN AFFECTED NEW BRUNSWICK.

THE FOLLOWING IS A LIST OF SOME OF THE MAXIMUM WINDS THAT AFFECTED 
PEI.

STATION               HIGHEST GUST (KILOMETRES PER HOUR)

SUMMERSIDE              98
HARRINGTON              93
CHARLOTTETOWN           105


END

Extratropical Storm Arthur (gale force) Update Twelve

WOCN31 CWHX 061445
INTERMEDIATE TROPICAL CYCLONE INFORMATION STATEMENT UPDATED BY THE 
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA
AT 11:37 AM ADT SUNDAY 6 JULY 2014
---------------------------------------------------------------------
INTERMEDIATE TROPICAL CYCLONE INFORMATION STATEMENT FOR:
      NOVA SCOTIA
      PRINCE EDWARD ISLAND
      NEW BRUNSWICK.

      FOR POST-TROPICAL STORM ARTHUR.

      THIS IS A SPECIAL METEOROLOGICAL SUMMARY FOR POST-TROPICAL
      STORM ARTHUR.

      THIS IS THE FINAL STATEMENT BY THE CANADIAN HURRICANE CENTRE
      ON THIS STORM.

---------------------------------------------------------------------
INTERMEDIATE TROPICAL CYCLONE INFORMATION STATEMENT ENDED FOR:
      NEWFOUNDLAND
      QUEBEC MARITIME.

      ALTHOUGH THE LINGERING EFFECTS OF ARTHUR ARE STILL OCCURRING
      OVER PARTS OF THESE REGIONS, THIS BULLETIN IS SERVING AS A
      SUMMARY REPORT FOR THE PRIMARY AFFECTED AREAS AROUND THE
      MARITIME PROVINCES.

---------------------------------------------------------------------
==DISCUSSION==

*** METEOROLOGICAL SUMMARY OF THE EVENT ***.

HURRICANE ARTHUR TRANSFORMED INTO A POTENT POST-TROPICAL STORM OVER 
THE MARITIME PROVINCES ON SATURDAY JULY 5 2014 CAUSING SIGNIFICANT 
TREE DAMAGE AND LIGHT TO MODERATE FLOODING FOR MANY AREAS. THE 
TRANSFORMATION WAS A RESULT OF THE MERGING OF THE HURRICANE WITH A 
COLD FRONT - SIMILAR TO HURRICANE IGOR IN NEWFOUNDLAND IN 2010 - BUT 
OBVIOUSLY FARTHER WEST AND NOT AS SEVERE.

THIS EVENT AS WELL AS OTHERS LIKE IGOR HIGHLIGHT THAT WHEN A 
HURRICANE BECOMES A POST-TROPICAL STORM IT IS NOT ALWAYS A 
'DOWNGRADE'.  IN FACT, WHEN THESE STORMS UNDERGO THE TRANSFORMATION 
TO POST-TROPICAL STATUS, THE AREA OF HIGH WINDS (AND RAIN) EXPANDS 
SIGNIFICANTLY EVEN THOUGH THE HIGHEST WINDS AND HEAVIEST RAINFALL 
INTENSITY IN THE STORM MAY DECREASE A BIT. AS A RESULT A WIDER AREA 
IS AFFECTED AND THE STORM'S TOTAL ENERGY ACTUALLY INCREASES IN MANY 
CASES.  IN THE CASE OF ARTHUR THE HIGHEST WINDS AT THE END OF ITS 
HURRICANE STATUS WERE ABOUT 120 KM/H AND DURING THE HOURS AFTER WE 
DECLARED IT POST-TROPICAL THE HIGHEST WINDS WERE STILL AROUND 110 
KM/H (WHICH WE SAW IN THE FORM OF GUSTS OVER LAND).

VIGOROUS HURRICANE TRANSFORMATIONS LIKE THIS HAVE STRONG WINDS NOT 
ONLY TO THE RIGHT OF WHERE THE STORM CENTRE (LOWEST PRESSURE) TRACKS 
BUT ALSO SLIGHTLY TO THE LEFT OF THE TRACK AS WE SAW DURING THIS 
STORM AND OTHERS SUCH AS IGOR OVER NEWFOUNDLAND IN 2010. THESE 
LEFT-OF-TRACK WINDS ARE USUALLY FROM THE NORTH, NORTHWEST OR WEST
AND ARE WHAT WE REFER TO IN METEOROLOGY AS A "STING JET". IT WAS
THIS SO-CALLED "STING JET" THAT CAUSED THE HIGH WINDS AT
FREDERICTON, ACROSS PARTS OF THE WESTERN HALF OF NOVA SCOTIA AND 
SPECIFICALLY THE ANNAPOLIS VALLEY. WE EMPHASIZED THESE WINDS IN
THE FORECAST BULLETINS AND DURING MEDIA INTERVIEWS. THIS IS NOT A
NEW PHENOMENON - BUT IS A TERM NOT OFTEN REFERRED-TO IN TRADITIONAL 
WEATHER FORECASTS.

WHAT WAS EXCEPTIONAL ABOUT THIS STORM WAS THE EXTENT OF THIS WIND 
FEATURE TO THE LEFT (NORTHWEST) OF THE STORM TRACK - IN FREDERICTON
- AND THE PEAK STRENGTH OF IT OVER THE ANNAPOLIS VALLEY WITH THE 
EXTREME GUST OF 138 KM/H AT THE GREENWOOD D.N.D. BASE. ALSO OF NOTE 
WITH THESE TYPES OF STORMS IS THAT THERE CAN BE VERY LITTLE RAIN AND 
EVEN SUNSHINE ON THE RIGHTHAND SIDE (USUALLY SOUTH) OF THE STORM 
CENTRE/TRACK. RAINFALL IS TYPICALLY VERY HEAVY NORTH (LEFT) OF THE 
STORM TRACK WHERE THE COLD FRONT ACTS AS A CONDUIT FOR THE MOISTURE 
FROM THE HURRICANE.

THE OFFICIAL STATUS OF ARTHUR AT LANDFALL WAS A NEAR 
HURRICANE-STRENGTH POST-TROPICAL STORM WITH MAXIMUM WINDS OF 60
KNOTS (110 KM/H). THE LANDFALL LOCATION OF THE CENTRE WAS IN THE 
VICINITY OF PORT MAITLAND / METEGHAN IN WESTERN NOVA SCOTIA.
THE CENTRAL PRESSURE AT LANDFALL WAS 980 MB (28.94").


FURTHER DETAILS:
------------------------------------------------------------------

LISTING OF TOP WIND SPEEDS:

MAXIMUM GUSTS (KM/H):
---------------------------------------------

GREENWOOD, NS           138
BRIER ISLAND, NS        128
FIVE ISLANDS, NS        127*
YARMOUTH, NS            111
LUNENBURG, NS           108
CHARLOTTETOWN, NS       105
FREDERICTON, NB         100

THE GASPÉ REGION OF QUEBEC AND THE MAGDELAN ISLANDS WERE AFFECTED 
WITH HIGH WINDS AS WELL WITH GUSTS FROM 80 TO NEAR 100 KM/H. 
NEWFOUNDLAND IS STILL BEING AFFECTED AT THE TIME THIS BULLETIN WAS 
ISSUED.

LISTING OF TOP RAINFALL AMOUNTS:

TOTAL RAINFALL (MM):
---------------------------------------------

ST. STEPHEN, NB         143
NOONAN, NB              140
MILLVILLE, NB           127
MIRAMICHI, NB           122

MUCH LESS RAINFALL IN PRINCE EDWARD ISLAND AND NOVA SCOTIA. YARMOUTH 
HAD 52 MM AND WESTERN PEI HAD 27 MM (NORTH CAPE). GASPÉ RECORDED 67 
MM.

* VOLUNTEER WEATHER OBSERVER.

OFFSHORE WIND AND WAVES:

BUOY 44024      5.4 M
BUOY 44258      6.9 M (MOUTH HALIFAX HARBOUR)
BUOY 44150      9.0 M

END/FOGARTY

Extratropical Storm Arthur (gale force) Update Eleven

FXCN31 CWHX 060600
TROPICAL CYCLONE TECHNICAL INFORMATION STATEMENT ISSUED BY THE 
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 2.54 AM ADT
SUNDAY 06 JULY 2014.

THE NEXT STATEMENT WILL BE ISSUED BY 9.00 AM ADT

1. CURRENT POSITION, STRENGTH, CENTRAL PRESSURE AND MOTION

AT 3.00 AM ADT, POST-TROPICAL STORM ARTHUR WAS LOCATED NEAR LATITUDE 
47.4 N AND LONGITUDE 62.5 W, ABOUT 27 NAUTICAL MILES OR 50 KM WEST OF 
I'LES DE LA MADELEINE. MAXIMUM SUSTAINED WINDS ARE ESTIMATED AT 45 
KNOTS (83 KM/H) AND CENTRAL PRESSURE AT 984 MB. ARTHUR IS MOVING 
NORTHEAST AT 16 KNOTS (29 KM/H).

2. FORECAST POSITION, CENTRAL PRESSURE AND STRENGTH

DATE     TIME     LAT    LON   MSLP  MAX WIND
          ADT                    MB  KTS  KMH
JUL 06  3.00 AM  47.4N  62.5W   984   45   83 POST-TROPICAL
JUL 06  9.00 AM  48.2N  60.3W   986   40   74 POST-TROPICAL
JUL 06  3.00 PM  49.6N  57.7W   987   35   65 POST-TROPICAL
JUL 06  9.00 PM  51.1N  55.5W   987   35   65 POST-TROPICAL
JUL 07  3.00 AM  53.1N  54.0W   987   35   65 POST-TROPICAL
JUL 07  9.00 AM  55.0N  53.0W   986   35   65 POST-TROPICAL
JUL 07  3.00 PM  56.6N  52.3W   985   35   65 POST-TROPICAL
JUL 07  9.00 PM  58.4N  51.6W   985   35   65 POST-TROPICAL
JUL 08  3.00 AM  60.2N  50.6W   985   35   65 POST-TROPICAL


3. TECHNICAL DISCUSSION

A. ANALYSIS

ARTHUR IS NEAR ILES DE LA MADELEINE AND HEADING TOWARDS WESTERN 
NERFOUNDLAND. IT IS STARTING TO WEAKEN, AND THE STRONG JET WEST OF
THE STORM THAT DEVELOPED DURING THE  EXTRATROPICAL TRANSTITION HAS 
DISSIPATED. THERE IS STILL A WEAKENEING BAND OF PRECIPITATION WEST OF 
THE STORM, BUT FURTHER SIGNIFICANT AMOUNTS OF RAIN ARE UNLIKELY. THE 
UPPER LEVEL TROUGH THAT WAS INTENSIFYING ARTHUR IS NOW VERTICALLY 
STACKED, AND THE JET STREAM IS GIVING NO SIGNIFICANT SUPPORT TO THE 
LOW CENTER. A SPLIT JET IS GIVING SOME UPPER LEVEL SUPPORT TO THE
DEEP UPPER TROUGH OVER ARTHUR,  PROBABLY SUFFICIENT TO SLOW THE
WEAKENING OF THE SYSTEM.

B. PROGNOSTIC

THE FORWARD SPEED OF ARTHUR HAS BEEN NEARLY CONSTANT DURING THE PAST 
FEW HOURS AND IS MOVING EAST-NORTHEAST AT ABOUT 16 KNOTS.
AS THE STORM CROSSES NEWFOUNDLAND IT WILL ELONGATE  ON A 
NORTHWEST-SOUTHEAST AXIS UNDER THE UPPER TROUGH, THEN SLOWLY DRIFT 
NORTHEAST OVER THE LABRADOR SEA AS AN OCCLUDED LOW. WINDS WILL BE
WEAK GALE FORCE FOR THE LATTER PART OF THIS MOTION, AND COLD SSTS
WILL FURTHER REDUCE THE STORM INTENSITY.

C. PREDICTED WIND RADII (NM)

TIME          GALES           STORMS            HURRICANE
         NE  SE  SW  NW    NE  SE  SW  NW    NE  SE  SW  NW
06/06Z  120 200 180 100     0   0   0   0     0   0   0   0
06/12Z  150 215 170  95     0   0   0   0     0   0   0   0
06/18Z  170 230 160  90     0   0   0   0     0   0   0   0
07/00Z  190 235 160  70     0   0   0   0     0   0   0   0
07/06Z  205 235 160  45     0   0   0   0     0   0   0   0
07/12Z  230 260 160  30     0   0   0   0     0   0   0   0
07/18Z  250 265 160  15     0   0   0   0     0   0   0   0
08/00Z  250 250 160  10     0   0   0   0     0   0   0   0
08/06Z  270 255 160   0     0   0   0   0     0   0   0   0


END/MERCER/COUTURIER