Tropical Cyclones [Index]

Tropical Cyclone ALENGA Southern Hemisphere Summary

HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0711UTC 7 DECEMBER 2011

HURRICANE FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0600 UTC Tropical Cyclone Alenga was centred within 20 nautical miles of
 latitude fourteen decimal three south (14.3S)
 longitude eighty nine decimal nine east (89.9E)
Recent movement : east southeast at 7 knots
Maximum winds   : 55 knots
Central pressure: 986 hPa

AREA AFFECTED
Within 90 nautical miles of the centre.

FORECAST
Maximum winds to 55 knots near the centre increasing to 65 knots by 0000 UTC 08
December.

Winds above 64 knots within 20 nautical miles of centre with very high seas
from 0000 UTC 08 December.
 
Winds above 48 knots within 40 nautical miles of centre with high seas and
moderate swell.
  
Winds above 34 knots within 90 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 1800 UTC 07 December: Within 50 nautical miles of 14.9 south 91.6 east
                        Central pressure 983 hPa.
                        Winds to 60 knots near centre.
At 0600 UTC 08 December: Within 80 nautical miles of 16.0 south 94.1 east
                        Central pressure 981 hPa.
                        Winds to 65 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 1300 UTC 07 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 1244UTC 7 DECEMBER 2011

STORM FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 1200 UTC Tropical Cyclone Alenga was centred within 25 nautical miles of
 latitude fourteen decimal six south (14.6S)
 longitude ninety decimal eight east (90.8E)
Recent movement : east southeast at 8 knots
Maximum winds   : 55 knots
Central pressure: 986 hPa

AREA AFFECTED
Within 90 nautical miles of the centre.

FORECAST
Maximum winds to 55 knots near the centre increasing to 60 knots by 1800 UTC 07
December.

Winds above 48 knots within 30 nautical miles of centre with very rough to high
seas and moderate to heavy swell.
  
Winds above 34 knots within 90 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 0000 UTC 08 December: Within 55 nautical miles of 15.5 south 92.4 east
                        Central pressure 983 hPa.
                        Winds to 60 knots near centre.
At 1200 UTC 08 December: Within 85 nautical miles of 16.8 south 95.0 east
                        Central pressure 991 hPa.
                        Winds to 50 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 1900 UTC 07 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0106UTC 8 DECEMBER 2011

HURRICANE FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0000 UTC Severe Tropical Cyclone Alenga was centred within 4 nautical miles
of
 latitude sixteen decimal two south (16.2S)
 longitude ninety four decimal nine east (94.9E)
Recent movement : east southeast at 19 knots
Maximum winds   : 70 knots
Central pressure: 976 hPa

AREA AFFECTED
Within 80 nautical miles of the centre.

FORECAST
Maximum winds to 70 knots near the centre easing to 55 knots by 0000 UTC 09
December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell.
  
Winds above 34 knots within 80 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 1200 UTC 08 December: Within 35 nautical miles of 17.8 south 97.7 east
                        Central pressure 979 hPa.
                        Winds to 65 knots near centre.
At 0000 UTC 09 December: Within 65 nautical miles of 19.3 south 99.9 east
                        Central pressure 983 hPa.
                        Winds to 55 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 0700 UTC 08 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0719UTC 8 DECEMBER 2011

HURRICANE FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0600 UTC Severe Tropical Cyclone Alenga was centred within 15 nautical miles
of
 latitude seventeen decimal three south (17.3S)
 longitude ninety six decimal eight east (96.8E)
Recent movement : east southeast at 20 knots
Maximum winds   : 80 knots
Central pressure: 968 hPa

AREA AFFECTED
Within 100 nautical miles in NE quadrant
  and within 80 nautical miles in SE quadrant
  and within 50 nautical miles in SW quadrant
  and within 80 nautical miles in NW quadrant.

FORECAST
Maximum winds to 80 knots near the centre easing to 50 knots by 0600 UTC 09
December.

Winds above 64 knots within 25 nautical miles with very high seas until 1800
UTC 08 December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell.
  
Winds above 34 knots within 50 nautical miles in SW quadrant, extending to 80
nautical miles within SE and NW quadrants and 100 nautical miles in NE quadrant
with very rough seas and moderate swell.

Forecast positions
At 1800 UTC 08 December: Within 45 nautical miles of 19.1 south 99.9 east
                        Central pressure 981 hPa.
                        Winds to 60 knots near centre.
At 0600 UTC 09 December: Within 75 nautical miles of 20.5 south 101.9 east
                        Central pressure 986 hPa.
                        Winds to 50 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 1300 UTC 08 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 1257UTC 8 DECEMBER 2011

HURRICANE FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 1200 UTC Severe Tropical Cyclone Alenga was centred within 20 nautical miles
of
 latitude eighteen decimal five south (18.5S)
 longitude ninety eight decimal six east (98.6E)
Recent movement : east southeast at 21 knots
Maximum winds   : 75 knots
Central pressure: 969 hPa

AREA AFFECTED
Within 100 nautical miles in NE quadrant
  and within 80 nautical miles in SE quadrant
  and within 50 nautical miles in SW quadrant
  and within 80 nautical miles in NW quadrant.

FORECAST
Maximum winds to 75 knots near the centre easing to 40 knots by 1200 UTC 09
December.

Winds above 64 knots within 25 nautical miles with very high seas until 1800
UTC 08 December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell until 0600 UTC 9 December.
  
Winds above 34 knots within 100 nautical miles in NE quadrant
  and within 80 nautical miles in SE quadrant
  and within 50 nautical miles in SW quadrant
  and within 80 nautical miles in NW quadrant with very rough seas and moderate
swell.

Forecast positions
At 0000 UTC 09 December: Within 45 nautical miles of 20.6 south 101.7 east
                        Central pressure 987 hPa.
                        Winds to 50 knots near centre.
At 1200 UTC 09 December: Within 75 nautical miles of 21.4 south 103.2 east
                        Central pressure 991 hPa.
                        Winds to 40 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 1900 UTC 08 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 1853UTC 8 DECEMBER 2011

STORM FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 1800 UTC Tropical Cyclone Alenga was centred within 30 nautical miles of
 latitude nineteen decimal six south (19.6S)
 longitude one hundred decimal four east (100.4E)
Recent movement : east southeast at 20 knots
Maximum winds   : 60 knots
Central pressure: 981 hPa

AREA AFFECTED
Within 80 nautical miles of the centre.

FORECAST
Maximum winds to 60 knots near the centre easing to 35 knots by 1800 UTC 09
December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell until 0600 UTC 9 December.
  
Winds above 34 knots within 80 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 0600 UTC 09 December: Within 50 nautical miles of 21.1 south 102.6 east
                        Central pressure 989 hPa.
                        Winds to 45 knots near centre.
At 1800 UTC 09 December: Within 75 nautical miles of 21.6 south 103.6 east
                        Central pressure 994 hPa.
                        Winds to 35 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 0100 UTC 09 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0059UTC 9 DECEMBER 2011

STORM FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0000 UTC Tropical Cyclone Alenga was centred within 30 nautical miles of
 latitude twenty decimal seven south (20.7S)
 longitude one hundred and two decimal six east (102.6E)
Recent movement : east southeast at 20 knots
Maximum winds   : 55 knots
Central pressure: 984 hPa

AREA AFFECTED
Within 80 nautical miles of the centre.

FORECAST
Maximum winds to 55 knots near the centre easing to 35 knots by 0000 UTC 10
December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell until 1200 UTC 9 December.
  
Winds above 34 knots within 80 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 1200 UTC 09 December: Within 60 nautical miles of 22.0 south 105.6 east
                        Central pressure 989 hPa.
                        Winds to 45 knots near centre.
At 0000 UTC 10 December: Within 90 nautical miles of 22.7 south 107.4 east
                        Central pressure 995 hPa.
                        Winds to 35 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 0700 UTC 09 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0200UTC 9 DECEMBER 2011

STORM FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0000 UTC Tropical Cyclone Alenga was relocated within 30 nautical miles of
 latitude twenty decimal five south (20.5S)
 longitude one hundred and one decimal six east (101.6E)
Recent movement : southeast at 11 knots
Maximum winds   : 50 knots
Central pressure: 986 hPa

AREA AFFECTED
Within 80 nautical miles of the centre.

FORECAST
Maximum winds to 50 knots near the centre easing to 30 knots by 0000 UTC 10
December.

Winds above 48 knots within 40 nautical miles of centre with very rough to high
seas and moderate to heavy swell until 0600 UTC 9 December.
  
Winds above 34 knots within 80 nautical miles of centre with very rough seas
and moderate swell.

Forecast positions
At 1200 UTC 09 December: Within 60 nautical miles of 21.5 south 103.2 east
                        Central pressure 992 hPa.
                        Winds to 40 knots near centre.
At 0000 UTC 10 December: Within 90 nautical miles of 22.2 south 104.9 east
                        Central pressure 1000 hPa.
                        Winds to 30 knots near centre.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 0700 UTC 09 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 0644UTC 9 DECEMBER 2011

GALE WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 0600 UTC Tropical Cyclone Alenga was centred within 30 nautical miles of
 latitude twenty one decimal three south (21.3S)
 longitude one hundred and two decimal five east (102.5E)
Recent movement : southeast at 11 knots
Maximum winds   : 40 knots
Central pressure: 990 hPa

AREA AFFECTED
Within 80 nautical miles of the centre, increasing to within 120 nautical miles
of the centre in the southern semi circle.

FORECAST
Maximum winds to 40 knots near the centre, contracting to the southern semi
circle after 1200 UTC 09 December.
  
Winds above 34 knots within 80 nautical miles of centre, increasing to within
120 nautical miles of the centre in the southern semi circle. Winds easing
below 34 knots in the northern semi circle after 1200 UTC 09 December. Very
rough seas and moderate swell.

Forecast positions
At 1800 UTC 09 December: Within 60 nautical miles of 22.5 south 104.2 east
                        Central pressure 995 hPa.
                        Winds 30 to 40 knots in the southern semi circle.
At 0600 UTC 10 December: Within 90 nautical miles of 23.3 south 105.4 east
                        Central pressure 1000 hPa.
                        Winds 30 to 40 knots in the southern semi circle.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to [email protected] or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 1300 UTC 09 December 2011.

WEATHER PERTH
=========================================================================
HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 1213UTC 9 DECEMBER 2011

GALE WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 1200 UTC Ex-Tropical Cyclone Alenga was centred within 20 nautical miles of
 latitude twenty one decimal five south (21.5S)
 longitude one hundred and two decimal nine east (102.9E)
Recent movement : southeast at 8 knots
Maximum winds   : 30 knots
Central pressure: 995 hPa

AREA AFFECTED

FORECAST
Although the system is below cyclone intensity, a strong ridge to the south is
expected to cause gales on the southern side of the low. Refer to Gale Warning
IDW21200 for further details.

REMARKS


WEATHER PERTH