Western Area High Seas Forecast


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 2300 UTC 20 September 2017

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
Refer to latest warnings for details of the area affected.

Melbourne Gale Warning 2.
Melbourne Gale Warning 3.

Part 2 Situation at 1800 UTC
Refer to latest warnings for boundary of affected area and type of weather

Cold front [1] 26S102E 35S110E to low [1] 987 hPa near 41S100E. Forecast east
of area by 220001UTC.

Low [2] forecast 987 hPa near 42S119E at 220001UTC.

Cold front [2] forecast 37S080E 44S091E 50S092E at 220001UTC.

Part 3 Forecast
Refer to latest warnings.

South of 25S, outside of warning areas:
Clockwise winds up to 3600nm around lows extending to 900 nm through the
northwest sector with a southwest quarter flow through that sector. Wind speeds
20/30 knots grading 25/33 knots within 120nm of warning areas.
Southwest quarter winds 20/30 knots south of line: 50S116E 43S129E until
Northerly quarter winds 20/30 knots within 180nm east of cold front [2]
shifting southwest quarter 20/30 knots west of cold front [2].
Remainder winds below 25 knots.
Moderate to rough seas. Moderate to heavy swell.

Winds not exceeding 25 knots with moderate seas on a moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
fronts and 480nm of lows. Isolated showers remainder south of 25S. Visibility
reducing below 2nm in precipitation.


The next routine forecast will be issued at 09:00 UTC Thursday.