Western Area High Seas Forecast

IDY10220
SECURITE
 
HIGH SEAS FORECAST FOR METAREA 10
WESTERN AREA: 12/30S 90/125E, 30/50S 80/129E
Issued by the Bureau of Meteorology Bureau National Operations Centre
FOR 24 HOURS COMMENCING 2300 UTC 20 SEPTEMBER 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 201853UTC:
Area bounded by 33S113E 34S118E 40S124E 50S144E 50S114E 33S113E.

Melbourne Gale Warning 2 issued 201854UTC:
Area bounded by 36S080E 45S107E 50S114E 50S080E 36S080E.
 
Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 17S105E 20S120E at 210600UTC, weakening after 210600UTC.

Ridge [2] 30S080E to high 1030 hPa near 32S083E to 40S094E 50S096E. Forecast
30S085E to high 1030 hPa near 31S091E to 41S104E 50S106E at 210600UTC and
29S090E 31S095E 40S111E 50S120E at 211800UTC.

Cold front [1] 20S103E 27S109E 41S116E 47S117E 50S116E. Forecast 21S111E 32S118E
39S119E 50S126E at 210600UTC and 32S125E 39S125E 45S129E at 211800UTC.

Cold front [2] approaching west of area. Forecast 41S080E 46S085E 50S086E at
210600UTC and 36S080E 42S093E 47S100E 50S102E at 211800UTC.

Trough 40S108E 45S111E 50S111E. Forecast 45S118E 50S119E at 210600UTC and
45S125E 50S128E at 211800UTC.
 
Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges:
Variable winds below 20 knots tending W quarter 15/25 knots along ridge [2]
south of 35S. Slight to moderate seas. Low to moderate swell. Heavy swell along
ridge [2].

Remainder north of ridge [1]:
SE quarter winds 15/25 knots tending variable below 20 knots east of 120E.
Moderate seas. Low to moderate swell.

Remainder south of ridge [1], east of cold front [1] outside warning area:
N quarter winds 15/25 knots increasing to 20/30 knots within 300nm east of front
south of 30S and remaining area south of 35 south. Winds grading to 25/33 knots
within 120nm of warning area. Moderate to rough seas. Moderate to heavy swell.

Remainder south of ridge [1], west of cold front [1], outside warning areas:
SW quarter winds shifting W quarter between trough and cold front [1]. NW
quarter west of ridge [2] shifting W quarter west of cold front [2]. Wind speeds
20/30 knots grading to 25/33 knots within 120nm of warning areas. Winds tending
SE quarter 15/25 knots north of 30S west of 100E extending to west of 110E by
211800UTC. Moderate to rough seas. Heavy swell.

Rain areas, showers and isolated thunderstorms within 300nm of cold fronts,
trough and SW of ridge [3]. Scattered showers and thunderstorms between cold
front [1] and ridge [2]. Visibility reducing below 2nm in precipitation.
 
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The next routine forecast will be issued at 0900  UTC 21 September 2014