Western Area High Seas Forecast

IDY10220
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High Seas Forecast for Western Metarea 10
WESTERN AREA: 12/30S 90/125E, 30/50S 80/129E
Issued by the Australian Government Bureau of Meteorology, BNOC
For 24 hours commencing 1100 UTC 30 September 2016

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.

Part 1 Warnings
Melbourne Storm Force Wind Warning 6 issued 300644UTC:
Area bounded by 39S095E 31S112E 34S124E 47S130E 50S129E 50S124E 48S119E 50S114E
50S088E 39S095E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 30S080E 25S104E 27S115E. Forecast 32S080E 33S089E 24S104E 25S115E at
301800UTC and 31S080E 32S095E 25S109E 24S116E at 010600UTC.

Ridge [2] 32S080E 40S086E 50S081E. Forecast 34S091E 50S092E at 301800UTC and
33S096E 41S099E 50S095E at 010600UTC.

Cold front [1] 32S117E 39S120E to low [1] 971 hPa near 47S114E to 50S115E.
Forecast 41S129E 46S123E to low [1] 968 hPa near 48S117E to 50S116E at
301800UTC and 47S132E 50S125E to low [1] 965 hPa near 49S119E at 010600UTC.

Cold front [2] 33S095E to low [2] 993 hPa near 42S101E to 50S102E. Forecast
30S111E to low [2] 982 hPa near 38S113E to 50S108E at 301800UTC and 33S123E to
low [2] 975 hPa near 39S122E to 49S119E 50S118E at 010600UTC.

Trough 12S107E 16S113E 21S116E. Forecast 12S109E 15S113E 21S118E at 301800UTC
and 12S110E 17S118E 20S120E at 010600UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and east of trough:
Variable winds below 20 knots with slight to moderate seas. Moderate to heavy
swell decreasing to low to moderate east of trough.

Remainder north ridge [1]:
SE quarter winds 10/20 knots with slight to moderate seas. Moderate swell.

East of cold front [2], outside warning area:
W quarter winds turning clockwise within 240nm of lows. Winds tending N quarter
east of front [2], shifting NE quarter after 301200UTC. Wind speeds 20/30 knots
decreasing to 15/25 knots within 240nm of ridges. Winds grading to 25/33 knots
within 120nm of warning area. Moderate to rough seas. Moderate to heavy swell
increasing to heavy near/west of front [1].

Remainder west of cold front [2], outside warning area:
SW quarter winds tending NW quarter west of ridge [2]. Winds turning clockwise
within 240nm of lows. Wind speeds 20/30 knots decreasing to 15/25 knots within
240nm of ridges. Winds grading to 25/33 knots within 120nm of warning area.
Moderate to rough seas. Heavy swell.

Areas of rain, scattered showers and isolated thunderstorms within 180nm of
cold fronts, lows and trough. Scattered showers and isolated thunderstorms east
of ridge [2]. Scattered to isolated showers remainder south of ridge [1] away
from ridges. Visibility reducing to below 2nm in precipitation.

WEATHER MELBOURNE

The next routine forecast will be issued at 21:00 UTC Friday.