Monday, August 24, 2009

Extratropical Storm Bill Moves further off into the North Atlantic




WOCN31 CWHX 241500
Hurricane Bill intermediate information statement issued by the
canadian hurricane centre of Environment Canada at 12.30 noon
NDT Monday 24 August 2009.

This is the final bulletin on post-tropical storm Bill.

As noted in the 9.30 AM NDT bulletin the centre of post-tropical
storm Bill was east of the Newfoundland marine district and a
Wide swath of west to northwest gales lingered in behind the storm
over the marine district. These gales will move east of all
Canadian waters this afternoon.


The following is a synopsis of huricane Bill as well as a summary of
weather and ocean data following its track through Atlantic Canada
Sunday and Sunday night.

Bill began as the third tropical depression of the Atlantic hurricane
season on August 15 and became named as a tropical storm later that
day. Bill became the first hurricane of the year on August 17 and
strenghtened to a category 2 hurricane on August 18 with winds in
excess of 157 km/h. Bill continued strengthening rapidly and
Became a major hurricane ... Category 4 ... With winds of 213 km/h
On August 19 and remained at that strength for a full day before
beginning to weaken.

In its early days Bill tracked towards the west northwest but
eventually curved northwest and then headed toward the north passing
well west of Bermuda as a marginal category 2 hurricane early on
August 22. Bill was a solid category 1 hurricane ... With sustained
Winds of 140 km/h ... When it entered southwestern maritime waters
near dawn on Sunday August 23. Hurricane Bill tracked northeast
through maritime waters passing within 50 km of the coast of Nova
Scotia before veering more eastward on its way to Newfoundland.

Hurricane Bill passed over grand Miquelon France before making
landfall near midnight Sunday night at point rosie on the Burin
peninusla of Newfoundland. The strength of the storm was on the
Boundary between a strong tropical storm and a hurricane ... With
sustained winds between 110 and 120 km/h at landfall. A post analysis
Is planned to determine its exact strength when it made landfall ...
But early indications are that it was below hurricane strength.
Bill tracked rapidly through the southern portions of Newfoundland
In a few hours as it increased in forward speed and was east of all
Newfoundland waters by mid Monday morning August 24.

Hurricane Bill encountered a tropical airmass when it arrived in
Atlantic Canada which delayed the onset of extratropical transition
until it was well into the Atlantic region of Canada. Heavy rain
Was reported in all four Atlantic provinces with the passage of
Bill. Storm force wind gusts were reported in Nova Scotia and
Newfoundland with high coastal waves and marginal flooding with
Storm surges reported in those same two provinces. Storm surge
Values ranged from 50 cm along the Atlantic coast of Nova Scotia to
70 cm along the Northumberland-Miramichi coast of New Brunswick to
75 cm in Placentia Bay Newfoundland.

Here are unofficial data from across Atlantic Canada and its marine
district:

Location rainfall (mm) peak wind (km/h)
-----------------------------------------------------

Nova Scotia...

Yarmouth 65 80
Baccaro Point 37 85
* dayton 64 N/a
Western Head 41 67
Lunenburg N/a 83
St Margaret bay 44 70
Shearwater 52 67
McNabs Island N/a 89
Osborne Head N/a 82
Halifax stanfield a 57 82
Lower Sackville 51 N/a
* Jollimore 71 N/a
* Clayton park 66 N/a
Stewiacke 31 69
Malay Falls 62 N/a
Beaver Island N/a 91
Brier Island N/a 70
Kejimkujik 51 52
* Caledonia 70 N/a
Greenwood 31 56
Kentville 56 61
Debert 33 72
Parrsboro 31 65
Nappan 19 63
Caribou Point 29 82
Tracadie 64 69
Hart Island N/a 93
* Lochaber 45 N/a
* Queensport 72 N/a
* Baddeck 31 N/a
Sydney 54 76
* new Victoria 50 N/a
Louisbourg 56 N/a
Ingonish Beach 68 56
North mountain 58 59
Cheticamp 26 89
Saint Paul island N/a 102


Prince Edward Island...

North point 28 70
Summerside 28 65
Charlottetown 23 65
St Peter's 41 56
* Alliston 66 N/a
East Point 55 91


New Brunswick...

Moncton 32 65
Bouctouche 24 N/a
* Saint John - erbs cove 27 N/a
Saint John airport 6 59
St Stephen 47 45


Newfoundland...

Argentia 31 94
Bonavista 27 91
Burgeo 43 78
* cape pine na 121
Cape Race na 132
Gander 71 59
Grates Cove na 93
La Scie na 56
* Lethbridge 39 na
Marticot island na 100
Port aux Basques 57 78
Sagona Island na 102
St.John's 40 80
St.Lawrence 45 96
Terra Nova park 30 57
Winterland 63 83
Wreckhouse 25 70


* denotes volunteer or private observer


Oceanic data...

Location sustained / peak wind (km/h)
------------------------------------------------------------
Georges Bank buoy 44011 74 / 96
Halifax harbour buoy 44258 57 / 82
Lahave Bank buoy 44150 100 / 135
East Scotian Slope buoy 44137 85 / 115
Laurentian fan buoy 44141 70 / 93
Banquereau Bank buoy 44139 74 / 100
Southwest Grand Banks buoy 44138 70 / 93
Nickerson bank buoy buoy 44251 70 / 96


Location significant/maximum waves (m)
-------------------------------------------------------------
Georges Bank buoy 44011 10.7 / na
Halifax harbour buoy 44258 9.0 / 14.9
Lahave Bank buoy 44150 13.4 / 26.4
East Scotian Slope buoy 44137 14.1 / 24.7
Laurentian fan buoy 44141 9.4 / 13.8
Banquereau Bank buoy 44139 10.5 / 17.3
Southwest Grand Banks buoy 44138 9.4 / 13.9
Nickerson bank buoy buoy 44251 7.8 / 12.0

End bowyer




WOCN31 CWHX 241500
HURRICANE BILL INTERMEDIATE INFORMATION STATEMENT ISSUED BY THE
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 12.30 NOON
NDT MONDAY 24 AUGUST 2009.

THIS IS THE FINAL BULLETIN ON POST-TROPICAL STORM BILL.

AS NOTED IN THE 9.30 AM NDT BULLETIN THE CENTRE OF POST-TROPICAL
STORM BILL WAS EAST OF THE NEWFOUNDLAND MARINE DISTRICT AND A
WIDE SWATH OF WEST TO NORTHWEST GALES LINGERED IN BEHIND THE STORM
OVER THE MARINE DISTRICT. THESE GALES WILL MOVE EAST OF ALL
CANADIAN WATERS THIS AFTERNOON.


THE FOLLOWING IS A SYNOPSIS OF HURICANE BILL AS WELL AS A SUMMARY OF
WEATHER AND OCEAN DATA FOLLOWING ITS TRACK THROUGH ATLANTIC CANADA
SUNDAY AND SUNDAY NIGHT.

BILL BEGAN AS THE THIRD TROPICAL DEPRESSION OF THE ATLANTIC HURRICANE
SEASON ON AUGUST 15 AND BECAME NAMED AS A TROPICAL STORM LATER THAT
DAY. BILL BECAME THE FIRST HURRICANE OF THE YEAR ON AUGUST 17 AND
STRENGHTENED TO A CATEGORY 2 HURRICANE ON AUGUST 18 WITH WINDS IN
EXCESS OF 157 KM/H. BILL CONTINUED STRENGTHENING RAPIDLY AND
BECAME A MAJOR HURRICANE ... CATEGORY 4 ... WITH WINDS OF 213 KM/H
ON AUGUST 19 AND REMAINED AT THAT STRENGTH FOR A FULL DAY BEFORE
BEGINNING TO WEAKEN.

IN ITS EARLY DAYS BILL TRACKED TOWARDS THE WEST NORTHWEST BUT
EVENTUALLY CURVED NORTHWEST AND THEN HEADED TOWARD THE NORTH PASSING
WELL WEST OF BERMUDA AS A MARGINAL CATEGORY 2 HURRICANE EARLY ON
AUGUST 22. BILL WAS A SOLID CATEGORY 1 HURRICANE ... WITH SUSTAINED
WINDS OF 140 KM/H ... WHEN IT ENTERED SOUTHWESTERN MARITIME WATERS
NEAR DAWN ON SUNDAY AUGUST 23. HURRICANE BILL TRACKED NORTHEAST
THROUGH MARITIME WATERS PASSING WITHIN 50 KM OF THE COAST OF NOVA
SCOTIA BEFORE VEERING MORE EASTWARD ON ITS WAY TO NEWFOUNDLAND.

HURRICANE BILL PASSED OVER GRAND MIQUELON FRANCE BEFORE MAKING
LANDFALL NEAR MIDNIGHT SUNDAY NIGHT AT POINT ROSIE ON THE BURIN
PENINUSLA OF NEWFOUNDLAND. THE STRENGTH OF THE STORM WAS ON THE
BOUNDARY BETWEEN A STRONG TROPICAL STORM AND A HURRICANE ... WITH
SUSTAINED WINDS BETWEEN 110 AND 120 KM/H AT LANDFALL. A POST ANALYSIS
IS PLANNED TO DETERMINE ITS EXACT STRENGTH WHEN IT MADE LANDFALL ...
BUT EARLY INDICATIONS ARE THAT IT WAS BELOW HURRICANE STRENGTH.
BILL TRACKED RAPIDLY THROUGH THE SOUTHERN PORTIONS OF NEWFOUNDLAND
IN A FEW HOURS AS IT INCREASED IN FORWARD SPEED AND WAS EAST OF ALL
NEWFOUNDLAND WATERS BY MID MONDAY MORNING AUGUST 24.

HURRICANE BILL ENCOUNTERED A TROPICAL AIRMASS WHEN IT ARRIVED IN
ATLANTIC CANADA WHICH DELAYED THE ONSET OF EXTRATROPICAL TRANSITION
UNTIL IT WAS WELL INTO THE ATLANTIC REGION OF CANADA. HEAVY RAIN
WAS REPORTED IN ALL FOUR ATLANTIC PROVINCES WITH THE PASSAGE OF
BILL. STORM FORCE WIND GUSTS WERE REPORTED IN NOVA SCOTIA AND
NEWFOUNDLAND WITH HIGH COASTAL WAVES AND MARGINAL FLOODING WITH
STORM SURGES REPORTED IN THOSE SAME TWO PROVINCES. STORM SURGE
VALUES RANGED FROM 50 CM ALONG THE ATLANTIC COAST OF NOVA SCOTIA TO
70 CM ALONG THE NORTHUMBERLAND-MIRAMICHI COAST OF NEW BRUNSWICK TO
75 CM IN PLACENTIA BAY NEWFOUNDLAND.

HERE ARE UNOFFICIAL DATA FROM ACROSS ATLANTIC CANADA AND ITS MARINE
DISTRICT:

LOCATION RAINFALL (MM) PEAK WIND (KM/H)
-----------------------------------------------------

NOVA SCOTIA...

YARMOUTH 65 80
BACCARO POINT 37 85
* DAYTON 64 N/A
WESTERN HEAD 41 67
LUNENBURG N/A 83
ST MARGARET BAY 44 70
SHEARWATER 52 67
MCNABS ISLAND N/A 89
OSBORNE HEAD N/A 82
HALIFAX STANFIELD A 57 82
LOWER SACKVILLE 51 N/A
* JOLLIMORE 71 N/A
* CLAYTON PARK 66 N/A
STEWIACKE 31 69
MALAY FALLS 62 N/A
BEAVER ISLAND N/A 91
BRIER ISLAND N/A 70
KEJIMKUJIK 51 52
* CALEDONIA 70 N/A
GREENWOOD 31 56
KENTVILLE 56 61
DEBERT 33 72
PARRSBORO 31 65
NAPPAN 19 63
CARIBOU POINT 29 82
TRACADIE 64 69
HART ISLAND N/A 93
* LOCHABER 45 N/A
* QUEENSPORT 72 N/A
* BADDECK 31 N/A
SYDNEY 54 76
* NEW VICTORIA 50 N/A
LOUISBOURG 56 N/A
INGONISH BEACH 68 56
NORTH MOUNTAIN 58 59
CHETICAMP 26 89
SAINT PAUL ISLAND N/A 102


PRINCE EDWARD ISLAND...

NORTH POINT 28 70
SUMMERSIDE 28 65
CHARLOTTETOWN 23 65
ST PETER'S 41 56
* ALLISTON 66 N/A
EAST POINT 55 91


NEW BRUNSWICK...

MONCTON 32 65
BOUCTOUCHE 24 N/A
* SAINT JOHN - ERBS COVE 27 N/A
SAINT JOHN AIRPORT 6 59
ST STEPHEN 47 45


NEWFOUNDLAND...

ARGENTIA 31 94
BONAVISTA 27 91
BURGEO 43 78
* CAPE PINE NA 121
CAPE RACE NA 132
GANDER 71 59
GRATES COVE NA 93
LA SCIE NA 56
* LETHBRIDGE 39 NA
MARTICOT ISLAND NA 100
PORT AUX BASQUES 57 78
SAGONA ISLAND NA 102
ST.JOHN'S 40 80
ST.LAWRENCE 45 96
TERRA NOVA PARK 30 57
WINTERLAND 63 83
WRECKHOUSE 25 70


* DENOTES VOLUNTEER OR PRIVATE OBSERVER


OCEANIC DATA...

LOCATION SUSTAINED / PEAK WIND (KM/H)
------------------------------------------------------------
GEORGES BANK BUOY 44011 74 / 96
HALIFAX HARBOUR BUOY 44258 57 / 82
LAHAVE BANK BUOY 44150 100 / 135
EAST SCOTIAN SLOPE BUOY 44137 85 / 115
LAURENTIAN FAN BUOY 44141 70 / 93
BANQUEREAU BANK BUOY 44139 74 / 100
SOUTHWEST GRAND BANKS BUOY 44138 70 / 93
NICKERSON BANK BUOY BUOY 44251 70 / 96


LOCATION SIGNIFICANT/MAXIMUM WAVES (M)
-------------------------------------------------------------
GEORGES BANK BUOY 44011 10.7 / NA
HALIFAX HARBOUR BUOY 44258 9.0 / 14.9
LAHAVE BANK BUOY 44150 13.4 / 26.4
EAST SCOTIAN SLOPE BUOY 44137 14.1 / 24.7
LAURENTIAN FAN BUOY 44141 9.4 / 13.8
BANQUEREAU BANK BUOY 44139 10.5 / 17.3
SOUTHWEST GRAND BANKS BUOY 44138 9.4 / 13.9
NICKERSON BANK BUOY BUOY 44251 7.8 / 12.0

END BOWYER

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