Marine weather index
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weather bulletin for the high seas for Metarea VII.East of 20e.
Issued by the South African Weather Service on the
09th of January 2009 at 13:30 UTC.
For southeast sector of Metarea VII, prepared by reunion,
see area 2 below.
Note: wx observations.
======================
Could all vessels experiencing unexpected, severe wx/sea state
please make every effort to report this to saws via cape town
radio.
Area 1:
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forecast valid from 092200 to 102200 UTC.
Wind in knots, wave heights in metres. No sea state given if
waves less than 3m.
Note the wind speeds quoted here are the expected average speeds.
Individual gusts may exceed these values by a factor of up to 1.5.
Wave heights are significant wave heights which may be accompanied
by individual waves 1.5 to 2.0 times higher.
Gale warning(s):
---------------
nil.
Synoptic situation at 091200 UTC
=================================
high 1022 hpa 35s00e high 1026 hpa 40s54e
low 1006 hpa 40s16w low 990 hpa 49s18w low 990 hpa 54s13w
low 1002 hpa 40s20e low 1002 hpa 35s30e low 1006 hpa 29s32e
low 1002 hpa 19s44e low 998 hpa 16s69e
1. Cold front: 28s13e 30s14e 35s20e 40s20e cont 45s28e 50s34e
55s39e 60s39e 65s30e
Area forecast:
==============
Cape east (32.5s/40s, 20e/50e)
wind : N to NW in the east, otherwise S to SW 15 to 20 becoming
E to NE 10 to 15 in the extreme west towards end period.
Vis : good but poor in frontal showers in the east.
Sea state: 2m to 2.5m reaching 3 in the west at times with a W to SW
swell but NE in the east.
Durban east (25s/32.5s, East Coast/55e)
wind : se 20 in the east, otherwise E to NE 10 to 20 SW to S 15
to 20 in the extreme west overnight.
Vis : good but poor in frontal showers.
Sea state: 2m to 2.5 reaching 3 at times, with NE swell but SSW in the
east.
Mozambique channel: and Tom
wind : south 15s: S to se 10 to 15 reaching 20 in the south but
W to NW 5 to 10 off the Madagascar coast.
North 15s: NW 10 to 20 reaching 25 to 30.
Vis : good but moderate in showers in the east.
Madagascar east: (10.5s/25s, Madagascar coast/55e)
wind : S to se 5 to 10 but E to NE 15 to 20 reaching 30 at times.
Vis : moderate in rain and showers in the west.
Sea state: 2.5 to 3m in the south with a SSW swell.
Marion forties east: (40s/50s, 35e/50e)
wind : S to SW 20 to 25 spreading eastward, where N to NW 25 to
30 at first.
Vis : good but poor in showers in the east at first.
Period.
Sea state: 2.5 to 3m, with NW swell.
Area 2.
=======
Marine meteorological bulletin from Meteo-France/La Reunion on
area ack (amsterdam-Crozet-kerguelen)
Date : 09/01/09 UTC time : 0600
Averaged wind speed on Beaufort scale
wind gusts may be about 40% stronger than the averages given here.
Part 1:
warning : nil, but gale force 8 expected over ker.
Part 2:
general synopsis, 09/01/09 at 0000 UTC :
- tropical disturbance 5, 1002 hpa within 30 nm radius of point
15.0s/68.0e. Movement: W-S-W 12kt. Becoming tropical depression axis
by 16.4s/66.7e to Morrow at 00 UTC.
- Cold front cf axis 22s/53e, 30s/70e, 35s/83e, 40s/95e, moving
eastward 15kt.
- High 1025 hpa near 41s/47e, with a ridge northeastward.
- Cold front cg axis 32s/16e, 40s/27e, 45s/31e, 50s/32e, 51s/21e,
moving eastward 15kt with low 997 hpa near 40s/15e.
Part 3:
forecast for 24 hours from 09/01/09 at 0600 UTC to 09/01/10 at 0600
UTC :
wam (30s/40s,50e/65e) : wind : southerly 4/5 in the ridge, force 6/7 over southeastern area
becoming anticlockwise 4/5 by western area.
Sea : moderate to rough. Moderate S-W swell over southeastern area.
Visi : good.
Ams (30s/40s,65e/80e) : rains and showers over eastern area.
Wind : over north of 34s: westerly 3 to 5 from north to south
backing southerly 3/5 at end. Over south of 34s: westerly 5/6
increasing 6/7 at end then backing southerly 5/7 sea : moderate to
rough from north to south. Moderate southwest swell over southwestern area.
Visi : poor in rains and showers.
Cro (40s/50s,50e/65e) : rain and showers over eastern area at beginning.
Wind : S-W 6/7 veering westerly 5/6 over southern area, becoming
anticlockwise 3/4 over northwestern area.
Sea : moderate to rough. Moderate SW swell.
Visi :good.
Ker (40s/50s,65e/80e) : rains and showers.
Wind : westerly 5/7 becoming clockwise 6/8 over northeastern area,
then southerly 5/7 over southern area then setting up W 5/7 by
western area at end.
Sea : moderate to rough. Moderate west swell.
Visi : poor in rains and showers.