Extratropical Storm Bill Heads Towards the British Isles #2

Extratropical Storm Bill Heads Towards the British Isles

From 1800 UTC Tue 25 Aug to 1800 UTC Fri 28 Aug

By midnight Wednesday the Atlantic will be dominated by ex-tropical hurricane Bill which will be at 52N 15W turning northeastwards into Western Scotland by midday Wednesday. As this low fills and moves away towards Iceland on Thursday, another low pressure forms and moves to 55N 17W by midday Thursday. This low moves to 59N 11W by midday Friday with central pressure remaining constant. Elsewhere a shallow low and frontal system will remain slow-moving across Scandinavia and the Baltic region. Although winds start below limits they increase to become strong south to southeasterly by midday Wednesday across all areas, perhaps reaching gale-force for a time in Forties, Viking and Fair Isle. Winds veer westerly by Thursday morning and slowly decrease for a time. By Friday morning strong southerly winds have again developed across Forth, Forties, Fisher and areas northwards. As winds decrease across these parts during Friday they increase to become strong west to southwesterly across Tyne, Dogger, German Bight and areas southwards

Niton

From 1800 UTC Tue 25 Aug to 1800 UTC Fri 28 Aug

By midnight Wednesday the Atlantic will be dominated by ex-tropical hurricane Bill which will be at 52N 15W turning northeastwards into Western Scotland by midday Wednesday. As this low fills and moves away towards Iceland on Thursday, another low pressure forms and moves to 55N 17W by midday Thursday. This low moves to 59N 11W by midday Friday with central pressure remaining constant. Visibility will be mostly moderate or good but poor at times in rain and drizzle. Strong south to southwesterly winds affect most areas Tuesday night west of Portland and Lundy. Winds generally veer westerly during Wednesday and decrease by the end of the day. Southwesterly winds then pick up again from midday Thursday in Shannon, Fastnet and Sole and later north-western parts of Fitzroy. Winds remain strong and veer west to northwesterly during Friday and extend into the Irish Sea and Wight. Visibility will be mostly moderate or good but poor at times in any rain or drizzle

Portpatrick

From 1800 UTC Tue 25 Aug to 1800 UTC Fri 28 Aug

By midnight Wednesday the Atlantic will be dominated by ex-tropical hurricane Bill which will be at 52N 15W turning northeastwards into Western Scotland by midday Wednesday. As this low fills and moves away towards Iceland on Thursday, another low pressure forms and moves to 55N 17W by midday Thursday. This low moves to 59N 11W by midday Friday with central pressure remaining constant. Strong southerly winds back southeasterly Tuesday night before veering westerly by midday Wednesday. West to southwesterly winds increase to gale-force in Hebrides, Fair Isle and Faeroes later on Wednesday and stay gale-force overnight. The gales move away later Thursday but a strong south to southwesterly wind remains across most areas except for Southeast Iceland where winds veer northwesterly. Westerly winds remain strong from Bailey and Hebrides southwards through Friday but become cyclonic over Southeast Iceland and Faeroes. Visibility will be generally moderate or good but poor at times in any rain or drizzle

-------------------------------------------------------------------------------------

Warning UK regions:

Northern Ireland

North West England

SW Scotland, Lothian & Borders


Warning

Heavy Rain Wed 26 Aug
There is a moderate risk of severe weather affecting parts of Northern Ireland, southwestern Scotland and Cumbria on Wednesday.

A band of locally very heavy rain will move northeastwards across Northern Ireland during the early hours of Wednesday and will spread across Cumbria and southwestern Scotland in the morning before clearing away during the afternoon. Accumulations of between 20 and 40 mm of rain are expected in a short period of time, with a few spots receiving around 60 mm.

Issued at: 1130 Mon 24 Aug

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

Extratropical Storm Bill Moves Away From Newfoundland, and Out to Sea

WOCN31 CWHX 241200
Post-tropical storm Bill information statement issued by the
Canadian hurricane centre of Environment Canada at 9.30 AM NDT
Monday 24 August 2009.

The next statement will be issued by 12.30 PM NDT

... Bill moves away from Newfoundland.. Toward the open sea ...

1. Current position, strength, central pressure and motion

At 9.30 AM NDT... Post-tropical storm Bill was located near
Latitude 48.9 N and longitude 45.3 W ... About 305 nautical miles
Or 570 km east northeast of st johns. Maximum sustained winds
Are estimated at 55 knots... 102 km/h... And central pressure at
990 MB. Bill is moving east at 42 knots... 78 km/h.

2. Forecast position, central pressure and strength

Date time lat lon MSLP Max wind
NDT MB kts kmh
Aug 24 9.30 AM 48.9N 45.3W 990 55 102 post-tropical
Aug 24 3.30 PM 49.1N 38.7W 990 55 102 post-tropical
Aug 24 9.30 PM 49.4N 31.4W 990 50 93 post-tropical

3. Public weather impacts and warnings summary

All warnings ended for Newfoundland. Strong to gale force
West to northwest winds linger along the east coast of Newfoundland
until later this morning. Seas along the southern coast of the
Avalon are abating as Bill moves out to sea.

4. Marine weather impacts and warnings summary

At 0630 NDT a rig in the Northern Grand Banks reported southwest
Winds of 80 kts ... Suggesting that Bill remains a strong tropical
storm with surface winds 55-60 kts. Gales extend back to the east
coast of Newfoundland at forecast time.

Remaining storm warnings with Bill will likely be lowered later
This morning and gale warnings ended this afternoon.

5. Technical discussion for meteorologists

A. Analysis
The centre of Bill is clearly east of Newfoundland waters at
Forecast time. 11Z report from drifter buoy z44622 ... Just east of
The southern extent of the Funk Island Bank marine area ...Had
pressure of 991 MB and falling. It is likely that the centre of
Bill was near the buoy at that time.

Sustained gales extended as far back as Newfoundland coast until 10Z.

B. Prognostic

Bill moving rapidly in westerlies and we carry it only to 00Z before
discontinuing track as it will exit the CHC response zone this
afternoon. Nhc discontinued messaging on Bill at 09Z.

C. Public weather
Final meteorological storm values will be given in the final
hurricane bulletin to be issued by the canadian hurricane centre at
12:30 PM NDT.

D. Marine weather
It is no longer appropriate to speak about wind radii since the
gradient has filled in to nearly 400 NM behind Bill.

Final oceanographic storm values will be given in the final
Hurricane bulletin to be issued by the canadian hurricane centre at
12:30 PM NDT.

End March/campbell/bowyer




WOCN31 CWHX 241200
POST-TROPICAL STORM BILL INFORMATION STATEMENT ISSUED BY THE
CANADIAN HURRICANE CENTRE OF ENVIRONMENT CANADA AT 9.30 AM NDT
MONDAY 24 AUGUST 2009.

THE NEXT STATEMENT WILL BE ISSUED BY 12.30 PM NDT

... BILL MOVES AWAY FROM NEWFOUNDLAND.. TOWARD THE OPEN SEA ...

1. CURRENT POSITION, STRENGTH, CENTRAL PRESSURE AND MOTION

AT 9.30 AM NDT... POST-TROPICAL STORM BILL WAS LOCATED NEAR
LATITUDE 48.9 N AND LONGITUDE 45.3 W ... ABOUT 305 NAUTICAL MILES
OR 570 KM EAST NORTHEAST OF ST JOHNS. MAXIMUM SUSTAINED WINDS
ARE ESTIMATED AT 55 KNOTS... 102 KM/H... AND CENTRAL PRESSURE AT
990 MB. BILL IS MOVING EAST AT 42 KNOTS... 78 KM/H.

2. FORECAST POSITION, CENTRAL PRESSURE AND STRENGTH

DATE TIME LAT LON MSLP MAX WIND
NDT MB KTS KMH
AUG 24 9.30 AM 48.9N 45.3W 990 55 102 POST-TROPICAL
AUG 24 3.30 PM 49.1N 38.7W 990 55 102 POST-TROPICAL
AUG 24 9.30 PM 49.4N 31.4W 990 50 93 POST-TROPICAL

3. PUBLIC WEATHER IMPACTS AND WARNINGS SUMMARY

ALL WARNINGS ENDED FOR NEWFOUNDLAND. STRONG TO GALE FORCE
WEST TO NORTHWEST WINDS LINGER ALONG THE EAST COAST OF NEWFOUNDLAND
UNTIL LATER THIS MORNING. SEAS ALONG THE SOUTHERN COAST OF THE
AVALON ARE ABATING AS BILL MOVES OUT TO SEA.

4. MARINE WEATHER IMPACTS AND WARNINGS SUMMARY

AT 0630 NDT A RIG IN THE NORTHERN GRAND BANKS REPORTED SOUTHWEST
WINDS OF 80 KTS ... SUGGESTING THAT BILL REMAINS A STRONG TROPICAL
STORM WITH SURFACE WINDS 55-60 KTS. GALES EXTEND BACK TO THE EAST
COAST OF NEWFOUNDLAND AT FORECAST TIME.

REMAINING STORM WARNINGS WITH BILL WILL LIKELY BE LOWERED LATER
THIS MORNING AND GALE WARNINGS ENDED THIS AFTERNOON.

5. TECHNICAL DISCUSSION FOR METEOROLOGISTS

A. ANALYSIS
THE CENTRE OF BILL IS CLEARLY EAST OF NEWFOUNDLAND WATERS AT
FORECAST TIME. 11Z REPORT FROM DRIFTER BUOY Z44622 ... JUST EAST OF
THE SOUTHERN EXTENT OF THE FUNK ISLAND BANK MARINE AREA ...HAD
PRESSURE OF 991 MB AND FALLING. IT IS LIKELY THAT THE CENTRE OF
BILL WAS NEAR THE BUOY AT THAT TIME.

SUSTAINED GALES EXTENDED AS FAR BACK AS NEWFOUNDLAND COAST UNTIL 10Z.

B. PROGNOSTIC

BILL MOVING RAPIDLY IN WESTERLIES AND WE CARRY IT ONLY TO 00Z BEFORE
DISCONTINUING TRACK AS IT WILL EXIT THE CHC RESPONSE ZONE THIS
AFTERNOON. NHC DISCONTINUED MESSAGING ON BILL AT 09Z.

C. PUBLIC WEATHER
FINAL METEOROLOGICAL STORM VALUES WILL BE GIVEN IN THE FINAL
HURRICANE BULLETIN TO BE ISSUED BY THE CANADIAN HURRICANE CENTRE AT
12:30 PM NDT.

D. MARINE WEATHER
IT IS NO LONGER APPROPRIATE TO SPEAK ABOUT WIND RADII SINCE THE
GRADIENT HAS FILLED IN TO NEARLY 400 NM BEHIND BILL.

FINAL OCEANOGRAPHIC STORM VALUES WILL BE GIVEN IN THE FINAL
HURRICANE BULLETIN TO BE ISSUED BY THE CANADIAN HURRICANE CENTRE AT
12:30 PM NDT.

END MARCH/CAMPBELL/BOWYER

-------------------------------------------------------------------------------------

000
WTNT33 KNHC 240840
TCPAT3
BULLETIN
TROPICAL STORM BILL ADVISORY NUMBER 36
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032009
500 AM AST MON AUG 24 2009

...BILL LOSES TROPICAL CHARACTERISTICS...

AT 500 AM AST...0900 UTC...ENVIRONMENT CANADA HAS DISCONTINUED ALL
TROPICAL STORM WATCHES AND WARNINGS FOR NEWFOUNDLAND.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE OF THE UNITED
STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.

AT 500 AM AST...0900 UTC...THE CENTER OF BILL WAS LOCATED NEAR
LATITUDE 48.6 NORTH...LONGITUDE 50.2 WEST OR ABOUT 190 MILES...
305 KM...NORTHEAST OF CAPE RACE NEWFOUNDLAND.

BILL IS MOVING TOWARD THE EAST-NORTHEAST NEAR 43 MPH...69 KM/HR. AN
EAST-NORTHEAST MOTION WITH SOME INCREASE IN FORWARD SPEED IS
EXPECTED DURING THE NEXT DAY OR TWO.

MAXIMUM SUSTAINED WINDS ARE NEAR 70 MPH...110 KM/HR...WITH HIGHER
GUSTS. GRADUAL WEAKENING IS FORECAST DURING THE NEXT COUPLE OF
DAYS. EVEN THOUGH BILL IS NO LONGER A TROPICAL CYCLONE...IT IS
EXPECTED TO PRODUCE A LARGE AREA OF STORM AND GALE FORCE WINDS OVER
THE NORTH ATLANTIC DURING THE NEXT DAY OR TWO.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 315 MILES...510 KM
FROM THE CENTER.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 980 MB...28.94 INCHES.

...SUMMARY OF 500 AM AST INFORMATION...
LOCATION...48.6N 50.2W
MAXIMUM SUSTAINED WINDS...70 MPH
PRESENT MOVEMENT...EAST-NORTHEAST OR 75 DEGREES AT 43 MPH
MINIMUM CENTRAL PRESSURE...980 MB

THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE
FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

$$
FORECASTER BROWN/ROBERTS

-------------------------------------------------------------------------------------

000
WTNT43 KNHC 240843
TCDAT3
TROPICAL STORM BILL DISCUSSION NUMBER 36
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032009
500 AM AST MON AUG 24 2009

SATELLITE IMAGERY AS WELL AS RADAR AND SURFACE DATA FROM
NEWFOUNDLAND CANADA INDICATE THAT BILL HAS QUICKLY LOST TROPICAL
CHARACTERISTICS THIS MORNING. THE CLOUD PATTERN HAS BECOME
INCREASING ASYMMETRIC WITH THE STRONGEST WINDS AND COLDEST CLOUD
TOPS WELL REMOVED FROM THE CENTER. THE SYSTEM IS RAPIDLY MOVING
EAST-NORTHEASTWARD WITHIN A BAND OF STRONG UPPER-LEVEL WESTERLY
WINDS ASSOCIATED WITH THE SOUTHERN EXTENT OF A POLAR JET THAT IS
LOCATED JUST TO THE NORTH OF THE CYCLONE. THE INITIAL INTENSITY
ESTIMATE IS 60 KT...WHICH IS BASED PRIMARILY ON BUOY...SHIP...AND
LAND OBSERVATIONS THAT RECORDED 50-56 KT WINDS DURING THE PAST 6
HOURS. THE EXTRATROPICAL LOW IS FORECAST TO GRADUALLY WEAKEN
THROUGHOUT THE FORECAST PERIOD.

THE CYCLONE CONTINUES TO ACCELERATE EAST-NORTHWESTWARD WITH AN
INITIAL MOTION ESTIMATE OF 075/37. BILL SHOULD CONTINUE TO MOVE
RAPIDLY EAST-NORTHEASTWARD ACROSS THE NORTH ATLANTIC DURING THE
NEXT DAY OR SO. THE GLOBAL MODELS INDICATE THAT BILL WILL SLOW
DOWN AS IT INTERACTS WITH A LARGE EXTRATROPICAL LOW SOUTHWEST OF
ICELAND IN A COUPLE OF DAYS. THE MODELS SUGGEST THAT THE
EXTRATROPICAL REMNANTS OF BILL WILL BE ABSORBED INTO THE LARGER LOW
SHORTLY THEREAFTER. THE OFFICIAL FORECAST IS SIMILAR TO THE
PREVIOUS ADVISORY AND IS CLOSE TO THE MODEL CONSENSUS.

THIS WILL BE THE LAST NHC ADVISORY ON BILL. ADDITIONAL INFORMATION
ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE
NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO
HEADER FZNT01 KWBC.

FORECAST POSITIONS AND MAX WINDS

INITIAL 24/0900Z 48.6N 50.2W 60 KT...EXTRATROPICAL
12HR VT 24/1800Z 50.0N 41.5W 55 KT...EXTRATROPICAL
24HR VT 25/0600Z 51.5N 29.5W 45 KT...EXTRATROPICAL
36HR VT 25/1800Z 52.5N 19.0W 40 KT...EXTRATROPICAL
48HR VT 26/0600Z 55.0N 11.0W 35 KT...EXTRATROPICAL
72HR VT 27/0600Z 62.5N 1.0W 30 KT...EXTRATROPICAL
96HR VT 28/0600Z...DISSIPATED

$$
FORECASTER BROWN/ROBERTS