IDW11400
Australian Government Bureau of Meteorology
Western Australia
Local Waters Forecast
Yanchep to Mandurah and Offshore to Rottnest Island
Issued at 11:30 pm WST on Tuesday 14 February 2012
Valid until midnight Friday
Please Be Aware
Wind gusts can be 40 percent stronger than the averages given here, and maximum
wave may be up to twice the height.
Warnings
Nil.
Synoptic Situation
A high pressure ridge lies to the south of the state with a surface trough
inland.
Forecasts:
Wednesday: S/SE winds 13/18 knots easing to S/SW winds 10/15 knots by late
morning. Winds increasing to S/SW 15/20 knots by early afternoon and reaching
20/25 knots by late afternoon. Seas 1.0m to 2.0m. Swell 1.0m to 1.5m.
Swell at Cottesloe: to 0.5m.
Winds on Melville Water: S/SE winds 8/13 knots tending S/SW by late morning.
Winds increasing to S/SW 15/20 knots by mid afternoon before easing to S'ly
10/15 knots during the evening.
Thursday: S/SE winds 18/23 knots easing to 13/18 knots for a period in the
morning. Winds tending S/SW 18/23 knots early afternoon, strengthening to S/SW
20/30 knots during the afternoon. Seas 1.5m to 2.5m. Swell 1.0m to 1.5m.
Friday: S'ly winds 13/18 knots strengthening to S/SW winds 20/30 knots during
the afternoon.
Current Swell Observations:
Rottnest Waverider Buoy: 1.2m
Cottesloe Waverider Buoy: 0.4m.
Current swell height information is supplied by the Department of Transport and
is current only at the time of issue of this forecast
The next routine forecast will be issued at 4:30 am WST Wednesday.
