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Weather analysis > Weather bulletin of the 30th Décember 2012.

Weather bulletin of the 30th Décember 2012.

Weather analysis |

Weather analysis for the 30th December 2012.

General synopsis by  December 30, 2012 at 00h UTC :
Low 979 hPa 60S138E, moving east, expected 974 hPa 59S143E at 30/12 UTC, then 972 hPa 59S147E then merging with next Low.
Low 989 hPa 55S129E, moving quickly east and deepening, expected 976 hPa 55S148E, 970 hPa 55S156E at 31/00 UTC, then 967 hPa 56S163E at 31/12 UTC. Associated disturbance crossing ADELIE and west AUCKLAND.
Low 982 hPa 57S161E moving southeast, expected 978 hPa 59S170E at 30/12 UTC, then 966 hPa 63S169E at 31/00 UTC, then moving southwest, expected 964 hPa 65S163E at 31/12 UTC. Associated trough extending northeast, in whichdeepening new Low expected 993 hPa 48S176E at 30/12 UTC, then 987 hPa 52S179E at 31/00 UTC, 979 hPa 61S174W at 31/12 UTC. Associated disturbancecrossing east AUCKLAND then ROSS.
Low 989 hPa 52S164E moving east, expected 53S170E at 30/12 UTC then merging with prévious Low in trough. Associated cold front crossing north AUCKLAND.
Low 968 hPa 66S143W moving northeast, expected 974 hPa 63S137W at 30/12 UTC, then moving east, expected 978 hPa 62S125W at 31/00 UTC, then 983 hPa 63S121W at 31/12 UTC. Associated trough extending northeast and crossing ALBATROSS, in this trough new low deepening  and moving southeast, expected 1004 hPa 49S126W at 30/12 UTC, then 1004 hPa 52S117W at 31/00 UTC, then 1004 hPa 55S107W at 31/12 UTC. After this trough, two cold fronts crossing ALBATROSS.
Low 974 hPa 64S126W moving southeast, expected 974 hPa 65S122W at 30/12 UTC, then merging with previous one. Associated trough extending northeast, in which deepening new Low, expected  998 hPa 58S101W at 30/12 UTC, then moving southeast, expected 1003 hPa 62S91W at 31/00 UTC, then 1004 hPa 64S82W at 31/12 UTC. Associated trough extending northwest, in which deepening low expected 1009 hPa 58S90W at 31/12 UTC.
Low 994 hPa 60S99W  filling.
Low 998 hPa 53S83W, moving east, expected 999 hPa 50S76W at 30/12 UTC, then moving in atlantic ocean.

High 1025 hPa 39S132E moving northeast, expected 1022 hPa 35S169E at 31/12 UTC.
High 1029 hPa 41S151W moving southeast, expected 1031 hPa 40S146W at 31/12 UTC. Associated ridge over ROSS, moving east, over west ALBATROSS at end.
High 1029 hPa 39S101W moving east, expected 1030 hPa 40S94W at 31/12 UTC. Associated ridge extending south over PAQUES, then moving east, over east HORN at end.
Shallow high 1009 hPa 63S81W, merging with previous ridge.
 

Weather forecast for the 31st December 2012 at 00 UTC.

Weather forecast from  December 30, 2012 at 09h UTC to  December 31, 2012 at 12h UTC :
ADELIE north 53S, west 146 E : West or Southwest 30/35 kt, gusts 35/45 kt, decreasing 20/25 kt, gusts 30/35 kt from west at end. Sea very rough, becoming rough from west. squalls.
ADELIE north 56S, east 146 E : Northwest 25/30 kt, gusts 35/45 kt, but West 15/20 kt, gusts 25/30 kt at first in east, increasing North or  Northwest 30/35 kt, gusts 40/50 kt from west later, then veering quickly West, decreasing 20/25 kt, gusts 30/40 kt from west at end.  Sea rough becoming very rough cross with southwest swell 3/4 m. Rain and squalls.
AUCKLAND 47S-55S : West 15/20 kt, gusts 25/30 kt, increasing North or Northwest 30/35 kt, gusts 40/50 kt from west soon, backing West 25/30 kt, gusts 35/40 kt at end. Sea rough, becoming very rough cross with southwest swell 3/4 m. Rain and squalls.
ROSS west 165 W : North or Northwest 18/22 kt, gusts 25/30 kt, increasing 20/25 kt, gusts 30/35 kt from west soon, then backing West or Northwest 25/30 kt, gusts 35/45 kt at end. Sea rough, becoming locally very rough at end. Rain and squalls.
ROSS north 48S-55S, east 165 W : Northwesterly 15/20 kt, gusts 25/30 kt, increasing 20/25 kt, gusts 30/35 kt from west at end.  Sea moderate, becoming rough from west at end. Rain at end in west.
ALBATROSS 47S-54S, west 137W : West 20/25 kt, gusts 30/35 kt, decreasing 15/20 kt, gusts 25 kt from west soon.  Sea rough cross with southwest swell 3/4 m, becoming moderate from west. squalls.
ALBATROSS 49S-57S, east 137W :West or Northwest 20/25 kt, gusts 30/35 kt, increasing Northwest 25/30 kt, gusts  35/40 kt from west soon, backing West or Southwest from west à la fin. Sea very rough, crosswith southwest swell 3/4m, then with northwest swell 2/3 m at end. Rain and squalls.
PAQUES west 105 W : Northwest 25/30 kt, gusts 35/40 kt, decreasing temporarily 20/25 kt, gusts 30/35 kt soon. Sea very rough, becoming cross with southwest swell 3/4 m in west at end.
PAQUES east 105 W :  West or Northwest 15/20 kt gusts 25 kt, but Northwest 20/25 kt gusts 25/30 kt south 53S at first, backing West at end. Sea rough. Rain and squalls.
HORN west 75 W : North 15/20 kt, gusts 25 kt, backing Northwest soon, increasing 20/25 kt, gusts 25/30 kt in west at end. Sea rough. Rain and squalls.
HORN east 75 W: South or Southeast 10/15 kt, gusts 20/25 kt, backing Southwesterly at end. Sea moderate.
 

Weather forecast for the 1st January 2013 at 00 UTC.

Further outlook from  December 31, 2012 at 12h UTC to  January 01, 2013 at 12h UTC.
Strong wind warning greater than 40 nds :
ADELIE : Southwest 40/45 kt
AUCKLAND, West ROSS, West PAQUES : Northwest 40/45 kt
North MALOUINES, North SCOTIA : Cyclonic 40/45 kt.

High wave warning greater than 6 m :
North MALOUINES, North SCOTIA : 6/8 m.

On  Sunday , December 30, 2012 at 08h 33 UTC.
Christelle Alot
Météo-France

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