SIO: BIANCA (12U/10S) - Tropical Cyclone

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SIO: BIANCA (12U/10S) - Tropical Cyclone

#1 Postby HURAKAN » Fri Jan 21, 2011 2:34 pm

Australian Government Bureau of Meteorology
Northern Territory

WARNING

SEVERE WEATHER WARNING
for Damaging Winds, Heavy Rainfall, Abnormally High Tides and Large Waves
for people in the Darwin-Daly District
Issued at 4:49 am CST on Saturday 22 January 2011

Synoptic Situation: A TROPICAL LOW 1002 hPa is located over land near the
coast. At 3:30 am CST it was near latitude 15.0S, longitude 128.8E, about 85
kilometres north of Kununurra, moving slowly north. The low is expected to
remain near the coast and may intensify.

Damaging wind gusts up to 90 km/h are expected with thunderstorms in the
western Darwin-Daly District during today and Sunday.
Large waves and abnormally high tides are expected to develop along the coast
between Cape Fourcroy and the Western Australian border during today and Sunday.
Areas of heavy rain over the Darwin-Daly District may cause localised flooding
and significant stream rises during today and Sunday.

The Northern Territory Emergency Service advises that people should secure
loose outside objects and seek shelter when the conditions deteriorate. Driving
conditions may be hazardous - avoid flooded roads and watercourses. Abnormally
high tides could cause minor flooding at the coast.

The next warning will be issued by 11:00 am CST Saturday 22 January.

This warning is also available on telephone 1300 659 214 or on the internet at
http://www.bom.gov.au.
Last edited by HURAKAN on Wed Jan 26, 2011 1:54 pm, edited 2 times in total.
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#2 Postby HURAKAN » Fri Jan 21, 2011 2:34 pm

Potential Cyclones:
The monsoon trough is currently located from northern Kimberley to the southern
Gulf of Carpentaria and is expected to move north over the weekend. A weak
tropical low, 1002 hPa is located over land near Kununurra.
The low is expected to move slowly north and may intensify further.

Likelihood of this system being a tropical cyclone in the region on:
Saturday: Low,
Sunday : Low,
Monday : Moderate.
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#3 Postby HURAKAN » Fri Jan 21, 2011 9:14 pm

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Consensus
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#4 Postby Crostorm » Sun Jan 23, 2011 8:55 am

IDD20040
Australian Government Bureau of Meteorology
Northern Territory

WARNING

SEVERE WEATHER WARNING
for Damaging Winds, Heavy Rainfall, Abnormally High Tides and Large Waves
for people in the western Darwin-Daly District
Issued at 10:32 pm CST on Sunday 23 January 2011

Synoptic Situation: A TROPICAL LOW 1001 hPa is located in the Joseph Bonaparte
Gulf. At 9:30 pm CST it was near latitude 14.4S, longitude 128.9E, about 70
kilometres west southwest of Port Keats, moving west southwest at 6 kilometres
per hour. The low is expected to continue moving west and is likely to move
over the northern Kimberley tomorrow.

Damaging wind gusts up to 100 km/h are expected with thunderstorms in the
western Darwin-Daly District tonight and early Monday. Wind gusts easing as the
low moves away later on Monday.
Large waves and abnormally high tides are expected along the coast between Cape
Fourcroy and the Western Australian border tonight and early Monday.
Areas of heavy rain over the western Darwin-Daly District may cause localised
flooding and significant stream rises tonight and Monday.

The Northern Territory Emergency Service advises that people should secure
loose outside objects and seek shelter when the conditions deteriorate. Driving
conditions may be hazardous - avoid flooded roads and watercourses. Abnormally
high tides could cause minor flooding at the coast.

The next warning will be issued by 5:00 am CST Monday 24 January.

This warning is also available on telephone 1300 659 214 or on the internet at
http://www.bom.gov.au.
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Re: SIO: TROPICAL LOW (98S)

#5 Postby Crostorm » Sun Jan 23, 2011 8:57 am

IDW10800
Australian Government Bureau of Meteorology
Western Australia

Tropical Cyclone three-day outlook for the Western Region
Issued at 1:31pm WST on Sunday the 23rd of January 2011
Valid until midnight WST Wednesday


Existing Cyclones in the Western region:
Nil

Potential Cyclones:
At 8am WST a tropical low was located just off the Kimberley coast near latitude
14.3S longitude 128.8E, about 75 kilometres west of Port Keats, moving north at
6 kilometres per hour. The low is expected to move in a generally westwards
direction and be in the Western region [west of 125E] just off the Kimberley
coast on Tuesday. During the week the low is expected to move towards the
southwest parallel to the Pilbara coast. The low may develop into a tropical
cyclone late on Tuesday or more likely on Wednesday.

Likelihood of this system being a tropical cyclone in the Western Region:
Monday :Low
Tuesday :Moderate
Wednesday :High
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#6 Postby KWT » Sun Jan 23, 2011 10:35 am

That consensus model tracks the Australia coast perfectly down the western side!

Anyway the models get fairly agressive with this system IF the system can manage to get offshore in the first place. We'll just have to wait and see how it ends up!
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#7 Postby HURAKAN » Sun Jan 23, 2011 6:02 pm

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#8 Postby HURAKAN » Sun Jan 23, 2011 10:31 pm

THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 14.1S
129.1E, IS NOW LOCATED NEAR 14.0S 128.8E, APPROXIMATELY 150 NM
SOUTHWEST OF DARWIN, AUSTRALIA. RECENT ANIMATED INFRARED SATELLITE
IMAGERY AND RADAR FROM WYNDHAM, AUSTRALIA SHOWS A LOW LEVEL
CIRCULATION CENTER (LLCC) WITH FLARING DEEP CONVECTION. A
231239Z ASCAT PASS DEPICTS A 20- TO 25-KNOT LLCC. OBSERVATIONS FROM
WYNDHAM INDICATE 1002 MB SEA LEVEL PRESSURE WITH A 2 MB PRESSURE
DROP OVER THE PAST 24 HOURS. UPPER LEVEL ANALYSIS INDICATES THE
SYSTEM IS LOCATED IN AN AREA OF MODERATE (20 KNOTS) VERTICAL WIND
SHEAR (VWS) AND IMPROVING DIVERGENCE ALOFT. MAXIMUM SUSTAINED
SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL
PRESSURE IS ESTIMATED TO BE NEAR 1002 MB. THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS REMAINS FAIR.
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#9 Postby HURAKAN » Sun Jan 23, 2011 10:34 pm

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#10 Postby HURAKAN » Mon Jan 24, 2011 12:41 am

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#11 Postby HURAKAN » Mon Jan 24, 2011 12:42 am

TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 0135 UTC 24/01/2011
Name: Tropical Low
Identifier: 12U
Data At: 0000 UTC
Latitude: 14.7S
Longitude: 127.1E
Location Accuracy: within 30 nm [55 km]
Movement Towards: west [260 deg]
Speed of Movement: 8 knots [16 km/h]
Maximum 10-Minute Wind: 20 knots [35 km/h]
Maximum 3-Second Wind Gust: 45 knots [85 km/h]
Central Pressure: 1000 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds: NA
Dvorak Intensity Code: NA
Pressure of outermost isobar: 1004 hPa
Radius of outermost closed isobar: 80 nm [150 km]
Storm Depth: NA
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 24/1200: 15.2S 125.7E: 060 [110]: 020 [035]: 1000
+24: 25/0000: 16.2S 124.1E: 090 [165]: 025 [045]: 1000
+36: 25/1200: 17.3S 122.1E: 120 [220]: 030 [055]: 996
+48: 26/0000: 18.4S 119.7E: 150 [280]: 040 [075]: 994
+60: 26/1200: 19.4S 117.1E: 180 [335]: 050 [095]: 988
+72: 27/0000: 20.3S 114.6E: 210 [390]: 060 [110]: 980
REMARKS:
If the system was over water a T1.0 could be maintained [previously assigned
while over the Joseph Bonaparte Gulf]. 24 hour pressure falls in the vicinity
of the low are of the order 1.5-1.0 hPa. Wind speeds over land are low. The
highest wind speeds evident are at Troughton Island where 10-min winds are
reaching 25 knots at times.

Vertical shear has been slowly easing with the CIMSS analysis now showing
slightly less than 20 knots across the LLCC with stronger shear to the north.
Shear is likely to further reduce and by Wednesday nly moderate shear is
expected. By then the dry air that has been evident over the last couple of days
should no longer be an impediment and with significant ocean heat content off
the Pilbara coast the system is expected to develop at close to the
climatological rate during Wednesday and into Thursday.

The system is expected to be steered steadily southwest by a strong mid-level
ridge until Friday when an amplifying trough will weaken the ridge and the
system will take a more southwards track.


Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 24/0700 UTC by Perth TCWC
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#12 Postby HURAKAN » Mon Jan 24, 2011 12:42 am

Australian Government Bureau of Meteorology
Western Australia
Tropical Cyclone Warning Centre

Media: The Standard Emergency Warning Signal should NOT be used with this
warning.

PRIORITY

TROPICAL CYCLONE ADVICE NUMBER 1
Issued at 9:45 am WST on Monday 24 January 2011

A Cyclone WATCH has been declared for a developing tropical low for coastal
areas from Sandfire Roadhouse to Mardie.

At 8:00 am WST a tropical low was estimated to be over land,
65 kilometres southeast of Kalumburu and
630 kilometres northeast of Broome and
moving west at 16 kilometres per hour.

The low may develop into a tropical cyclone early on Wednesday by which time it
is expected to be north of Eighty Mile Beach and moving steadily towards the
southwest, parallel to the Pilbara coast. Gales are not expected in coastal
areas within the next 24 hours but could develop early on Wednesday.

Heavy rain is expected in coastal parts of the Kimberley between Kalumburu and
Broome during Monday and Tuesday. Localised stream rises are likely but
extensive flooding is not expected. During Wednesday and Thursday there is
likely to be heavy rainfall along parts of the Pilbara coast but again,
extensive flooding is not expected.

FESA-State Emergency Service advises that there are no community alerts at
present.
Communities between Kalumburu and Exmouth should listen for the next advice.

Details of Tropical Low at 8:00 am WST:
.Centre located near...... 14.7 degrees South 127.1 degrees East
.Location accuracy........ within 55 kilometres
.Recent movement.......... towards the west at 16 kilometres per hour
.Wind gusts near centre... 85 kilometres per hour
.Severity category........ below cyclone intensity
.Central pressure......... 1000 hectoPascals

The next advice will be issued by 3:00 pm WST Monday 24 January.

Cyclone advices and State Emergency Service Community Alerts are available by
dialling 1300 659 210

A map showing the track of the cyclone is available at:
http://www.bom.gov.au/weather/cyclone
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Re: SIO: TROPICAL LOW (98S)

#13 Postby Crostorm » Mon Jan 24, 2011 4:58 am

IDW24100
Australian Government Bureau of Meteorology
Western Australia
Tropical Cyclone Warning Centre

Media: The Standard Emergency Warning Signal should NOT be used with this
warning.

TOP PRIORITY FOR IMMEDIATE BROADCAST

TROPICAL CYCLONE ADVICE NUMBER 3
Issued at 5:45 pm WST on Monday 24 January 2011

A Cyclone WARNING is current for coastal and island communities from Kuri Bay
to Wallal.
A Cyclone WATCH is current for coastal and island communities from Wallal to
Exmouth.

At 5:00 pm WST a tropical low was estimated to be over land,
60 kilometres south southwest of Kalumburu and
570 kilometres northeast of Broome and
moving west southwest at 12 kilometres per hour.

The low has taken a turn towards the west southwest over the last 3 hours and
if it remains over land during the next 12 to 18 hours it is unlikely to
develop into a tropical cyclone until Wednesday. However, the low is close to
the west Kimberley coast and if the low moves over the ocean tonight it may
develop into a tropical cyclone by Tuesday evening and bring gales to the west
Kimberley coast. The communities most at risk of gales within 24 hours are
those between Kuri Bay and Beagle Bay including the communities of Beagle Bay,
Cape Leveque, Cockatoo Island and Kuri Bay.

By Wednesday evening the system is expected to be north of Karratha and moving
steadily towards the west southwest, parallel to the Pilbara coast. Gales may
develop in coastal areas of the Pilbara on Wednesday.

Heavy rain is expected in coastal parts of the Kimberley between Kalumburu and
Broome during the remainder of Monday and Tuesday. Localised stream rises are
likely but extensive flooding is not expected. During Wednesday and Thursday
there is likely to be heavy rainfall along parts of the Pilbara coast but
again, extensive flooding is not expected.

FESA-State Emergency Service advises that there are no community alerts at
present.
Communities between Kuri Bay and Exmouth should listen for the next advice.

Details of Tropical Low at 5:00 pm WST:
.Centre located near...... 14.8 degrees South 126.4 degrees East
.Location accuracy........ within 55 kilometres
.Recent movement.......... towards the west southwest at 12 kilometres per hour
.Wind gusts near centre... 85 kilometres per hour
.Severity category........ below cyclone intensity
.Central pressure......... 998 hectoPascals

The next advice will be issued by 9:00 pm WST Monday 24 January.

Cyclone advices and State Emergency Service Community Alerts are available by
dialling 1300 659 210

A map showing the track of the cyclone is available at:
http://www.bom.gov.au/weather/cyclone
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Re: SIO: TROPICAL LOW (98S)

#14 Postby Crostorm » Mon Jan 24, 2011 4:59 am

Image

IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 0733 UTC 24/01/2011
Name: Tropical Low
Identifier: 12U
Data At: 0600 UTC
Latitude: 14.4S
Longitude: 126.4E
Location Accuracy: within 30 nm [55 km]
Movement Towards: west [280 deg]
Speed of Movement: 8 knots [16 km/h]
Maximum 10-Minute Wind: 25 knots [45 km/h]
Maximum 3-Second Wind Gust: 45 knots [85 km/h]
Central Pressure: 998 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds: NA
Dvorak Intensity Code: NA
Pressure of outermost isobar: 1000 hPa
Radius of outermost closed isobar: 60 nm [110 km]
Storm Depth: NA
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 24/1800: 15.1S 124.9E: 060 [110]: 030 [055]: 995
+24: 25/0600: 16.2S 123.1E: 090 [165]: 040 [075]: 992
+36: 25/1800: 17.3S 120.8E: 120 [225]: 040 [075]: 990
+48: 26/0600: 18.5S 118.1E: 155 [285]: 050 [095]: 984
+60: 26/1800: 19.3S 115.7E: 200 [375]: 060 [110]: 975
+72: 27/0600: 20.3S 113.1E: 250 [465]: 070 [130]: 968
REMARKS:

Despite still being overland the system is showing improved organisation. 24
hour pressure falls in the vicinity of the low are of the order 3hPa. Wind
speeds over land are around 15 knots. Troughton Isalnd is recording 25 to 30
knots. The system has moved steadily westwards during the day and the warning
policy has been modified to reflect the risk that the system may go over water
earlier than the unshifted model consensus would indicate.

Vertical shear has continued to ease with the CIMSS analysis now showing less
than 20 knots across the LLCC. Shear is likely to further reduce and by
Wednesday only moderate shear is expected. The dry air that has been evident
over the last couple of days no longer appears to be having an influence and
with significant ocean heat content off the Pilbara coast the system is expected
to develop at close to the climatological rate during Wednesday and into
Thursday.

The system is expected to be steered steadily southwest by a strong mid-level
ridge until Friday when an amplifying trough will weaken the ridge and the
system will take a more southwards track.


Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 24/1300 UTC by Perth TCWC.
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Re: SIO: TROPICAL LOW (98S)

#15 Postby Crostorm » Mon Jan 24, 2011 5:02 am

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#16 Postby HURAKAN » Mon Jan 24, 2011 7:51 am

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#17 Postby HURAKAN » Mon Jan 24, 2011 8:13 am

TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1310 UTC 24/01/2011
Name: Tropical Low
Identifier: 12U
Data At: 1200 UTC
Latitude: 14.9S
Longitude: 126.1E
Location Accuracy: within 30 nm [55 km]
Movement Towards: west southwest [253 deg]
Speed of Movement: 6 knots [12 km/h]
Maximum 10-Minute Wind: 25 knots [45 km/h]
Maximum 3-Second Wind Gust: 45 knots [85 km/h]
Central Pressure: 998 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds: NA
Dvorak Intensity Code: NA
Pressure of outermost isobar: 1000 hPa
Radius of outermost closed isobar: 60 nm [110 km]
Storm Depth: NA
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 25/0000: 15.5S 124.9E: 060 [110]: 030 [055]: 995
+24: 25/1200: 16.3S 123.3E: 090 [165]: 040 [075]: 990
+36: 26/0000: 17.4S 120.9E: 120 [225]: 045 [085]: 988
+48: 26/1200: 18.4S 118.3E: 155 [285]: 055 [100]: 980
+60: 27/0000: 19.1S 115.8E: 200 [375]: 070 [130]: 967
+72: 27/1200: 20.1S 113.1E: 250 [465]: 070 [130]: 967
REMARKS:
The LLCC was located using surface observations and the Wyndham radar. Despite
still being overland the system is showing improved organisation. 24 hour
pressure falls to the southwest of the low are between 3 and 4 hPa. Wind speeds
over land are around 15 knots. Troughton Island winds to 10 UTC were 20 to 30
knots. The system has tracked towards the west southwest in the last 6 hours and
there still remains a chance that the low will move over open waters overnight
and develop into a tropical cyclone by late Tuesday. If the low remains over
land during the next 6 to 12 hours it is unlikely to develop into a tropical
cyclone until Wednesday.

Vertical shear has continued to ease with the 12 UTC CIMSS analysis now showing
E'ly shear between 10 and 20 knots across the LLCC. With significant ocean heat
content off the Pilbara coast the system is expected to develop at close to the
climatological rate during Wednesday and into Thursday before weakening over
cooler SSTs and increasing shear from Friday.

The system is expected to be steered steadily towards the west southwest by a
strong mid-level ridge until Friday when an amplifying trough will result in the
system being steered towards the south.


Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 24/1900 UTC by Perth TCWC.
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#18 Postby HURAKAN » Mon Jan 24, 2011 8:17 am

Image

WTXS21 PGTW 241230
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
130 NM EITHER SIDE OF A LINE FROM 14.5S 126.5E TO 18.1S 120.0E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IMAGERY
AND RADAR DATA AT 241200Z INDICATE THAT A CIRCULATION CENTER IS
LOCATED NEAR 14.7S 126.1E. THE SYSTEM IS MOVING WEST-SOUTHWESTWARD
AT 05 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 14.5S
126.6E IS NOW LOCATED NEAR 14.7S 126.1E, APPROXIMATELY 305 NM WEST-
SOUTHWEST OF DARWIN AUSTRALIA. RECENT ANIMATED INFRARED SATELLITE
IMAGERY AND A RADAR LOOP FROM WYNDHAM, AUSTRALIA DEPICT A DEVELOPING
LOW LEVEL CIRCULATION CENTER (LLCC) WITH TIGHTLY CURVED CONVECTIVE
BANDING AND CONSOLIDATING CONVECTION ALONG THE NORTHWESTERN COAST OF
AUSTRALIA. AT 24/06Z, SURFACE OBSERVATIONS FROM TRUSCOTT SHOWED A
DECREASE IN SEA LEVEL PRESSURE (SLP) OF ALMOST 4 MB IN THE LAST 24
HOURS AND A MINIMUM SLP OF 999 MB WITH 25 TO 30 KNOT WINDS. MORE
RECENT OBSERVATIONS REVEAL INCREASING PRESSURE NEAR TRUSCOTT (1002
MB) AND DECREASING PRESSURE TO THE SOUTHWEST NEAR DOONGAN (999 MB),
SUGGESTING THE LLCC IS DRIFTING SOUTHWESTWARD ALONG THE COAST. UPPER
LEVEL ANALYSIS REVEALS THE SYSTEM IS EQUATORWARD OF THE RIDGE AXIS
IN A REGION OF MODERATE EASTERLY VERTICAL WIND SHEAR AND DIFFLUENT
FLOW ALOFT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO
30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 999 MB.
DUE TO INCREASED CONSOLIDATION OF THE LLCC AND OBSERVED PRESSURE
FALLS, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY
251230Z.//
NNNN
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#19 Postby Chacor » Mon Jan 24, 2011 9:13 am

AXAU01 APRF 241310
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1310 UTC 24/01/2011
Name: Tropical Low
Identifier: 12U
Data At: 1200 UTC
Latitude: 14.9S
Longitude: 126.1E
Location Accuracy: within 30 nm [55 km]
Movement Towards: west southwest [253 deg]
Speed of Movement: 6 knots [12 km/h]
Maximum 10-Minute Wind: 25 knots [45 km/h]
Maximum 3-Second Wind Gust: 45 knots [85 km/h]
Central Pressure: 998 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds: NA
Dvorak Intensity Code: NA
Pressure of outermost isobar: 1000 hPa
Radius of outermost closed isobar: 60 nm [110 km]
Storm Depth: NA
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 25/0000: 15.5S 124.9E: 060 [110]: 030 [055]: 995
+24: 25/1200: 16.3S 123.3E: 090 [165]: 040 [075]: 990
+36: 26/0000: 17.4S 120.9E: 120 [225]: 045 [085]: 988
+48: 26/1200: 18.4S 118.3E: 155 [285]: 055 [100]: 980
+60: 27/0000: 19.1S 115.8E: 200 [375]: 070 [130]: 967
+72: 27/1200: 20.1S 113.1E: 250 [465]: 070 [130]: 967
REMARKS:
The LLCC was located using surface observations and the Wyndham radar. Despite
still being overland the system is showing improved organisation. 24 hour
pressure falls to the southwest of the low are between 3 and 4 hPa. Wind speeds
over land are around 15 knots. Troughton Island winds to 10 UTC were 20 to 30
knots. The system has tracked towards the west southwest in the last 6 hours and
there still remains a chance that the low will move over open waters overnight
and develop into a tropical cyclone by late Tuesday. If the low remains over
land during the next 6 to 12 hours it is unlikely to develop into a tropical
cyclone until Wednesday.

Vertical shear has continued to ease with the 12 UTC CIMSS analysis now showing
E'ly shear between 10 and 20 knots across the LLCC. With significant ocean heat
content off the Pilbara coast the system is expected to develop at close to the
climatological rate during Wednesday and into Thursday before weakening over
cooler SSTs and increasing shear from Friday.

The system is expected to be steered steadily towards the west southwest by a
strong mid-level ridge until Friday when an amplifying trough will result in the
system being steered towards the south.


Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 24/1900 UTC by Perth TCWC.
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HURAKAN
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#20 Postby HURAKAN » Mon Jan 24, 2011 1:44 pm

Australian Government Bureau of Meteorology
Western Australia
Tropical Cyclone Warning Centre

Media: The Standard Emergency Warning Signal should NOT be used with this
warning.

TOP PRIORITY FOR IMMEDIATE BROADCAST

TROPICAL CYCLONE ADVICE NUMBER 5
Issued at 11:45 pm WST on Monday 24 January 2011

A Cyclone WARNING is current for coastal and island communities from Kuri Bay
to Wallal.
A Cyclone WATCH is current for coastal and island communities from Wallal to
Exmouth.

At 11:00 pm WST a tropical low was estimated to be over land,
145 kilometres southwest of Kalumburu and
480 kilometres northeast of Broome and
moving southwest at 12 kilometres per hour.

The low has tracked towards the southwest over the last 6 hours and if it
remains over land during the next 6 to 12 hours it is unlikely to develop into
a tropical cyclone until Wednesday. However, the low is close to the west
Kimberley coast and if it moves over open waters overnight it may develop into
a tropical cyclone by Tuesday evening and bring gales to the west Kimberley
coast. The communities most at risk of gales within 24 hours are those between
Kuri Bay and Beagle Bay including the communities of Beagle Bay, Cape Leveque,
Cockatoo Island and Kuri Bay.

The system is expected to be north of Karratha late Wednesday or early Thursday
and moving steadily towards the west southwest, parallel to the Pilbara coast.
Gales may develop in coastal areas of the Pilbara during Wednesday.

Heavy rain is expected in coastal parts of the Kimberley between Kalumburu and
Broome overnight and during Tuesday. Localised stream rises are likely but
widespread flooding is not expected. During Wednesday and Thursday heavy
rainfall may develop along parts of the Pilbara coast but again, widespread
flooding is not expected.

FESA-State Emergency Service advises that there are no community alerts at
present.
Communities between Kuri Bay and Exmouth should listen for the next advice.

Details of Tropical Low at 11:00 pm WST:
.Centre located near...... 15.2 degrees South 125.7 degrees East
.Location accuracy........ within 85 kilometres
.Recent movement.......... towards the southwest at 12 kilometres per hour
.Wind gusts near centre... 85 kilometres per hour
.Severity category........ below cyclone intensity
.Central pressure......... 998 hectoPascals

The next advice will be issued by 3:00 am WST Tuesday 25 January.

Cyclone advices and State Emergency Service Community Alerts are available by
dialling 1300 659 210

A map showing the track of the cyclone is available at:
http://www.bom.gov.au/weather/cyclone
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