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 21 December 2014

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 Gale Warning 1 issued 210616UTC:
Area bounded by 50S101E 46S109E 46S124E 50S127E 50S101E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 35S080E to high 1026hPa near 34S087E 33S094E to high 1027hPa near
36S102E to 36S112E 41S129E. Forecast 34S080E to high 1026hPa near 35S086E
33S095E to high 1026hPa near 36S102E to 37S120E 40S129E at 211800UTC and
33S079E to high 1026hPa near 35S087E to 33S097E 37S105E 36S116E 39S129E at
220600UTC.

Ridge [2] 44S080E to high 1026hPa near 43S088E 40S098E to high 1027hPa near
36S102E. Forecast 44S088E to high 1026hPa near 43S094E to 39S101E to high
1026hPa near 36S102E at 211800UTC and from high 1026hPa near 35S087E to high
1027hPa near 41S101E 37S105E at 220600UTC.

Ridge [3] from high 1026hPa near 34S087E to high 1026hPa near 43S088E. Forecast
from high 1026hPa near 35S086E to high 1026hPa near 43S094E at 211800UTC, then
weakening.

Ridge [4] from high 1026hPa near 43S088E to 50S085E. Forecast from high 1026hPa
near 43S094E to 50S092E at 211800UTC and from high 1027hPa near 41S101E to
50S101E at 220600UTC.

Cold front [1] 43S097E 45S110E 50S125E. Forecast 41S104E 45S123E 47S129E at
211800UTC and 40S116E 43S126E 44S129E at 220600UTC.

Cold front [2] approaching from west, forecast 40S080E 46S087E 50S087E at
220600UTC.

Trough 35S094E 38S096E to low 1022hPa near 39S095E. Forecast 34S096E 37S099E to
low 1022hPa near 38S098E at 211800UTC and 33S096E 35S098E to low 1024hPa near
36S097E at 220600UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and 240nm of highs:
Variable winds to 20 knots, tending W quarter 20/30 knots along ridge [4]
south of 46S. Slight to moderate seas, moderate to rough along ridge [4]
south of 46S. Low to moderate swell, increasing to heavy south of 45S.

Remainder NE of a line 12S110E 20S116E:
Variable winds below 15 knots. Slight seas. Low swell.

Remainder north of ridge [1]:
S quarter winds, tending SE quarter west of 105E. Wind speeds 15/25 knots,
reaching 30 knots at times within area bounded by 34S115E 31S111E 25S111E
24S114E. Moderate to rough seas. Low to moderate swell.

Remainder between ridges [1] and [2]:
N quarter winds east of trough turning S quarter west of trough and clockwise
within 150nm of low. Wind speeds 15/25 knots. Moderate to rough seas. Low to
moderate swell.

Remainder south of ridge [1], outside warning area:
W quarter winds generally tending NW quarter west of ridge [4] east of front
[2]. Wind speeds 20/30 knots grading to 25/33 knots within 120nm of warning
area. Moderate to rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of low,
cold fronts and trough and also NE of line 12S110E 20S116E. Scattered showers
remainder west of front [1], east of ridge [4]. Visibility reducing below 2nm
in precipitation.

WEATHER MELBOURNE

The next routine forecast will be issued at 20:00 UTC Sunday.