Perth, Western Australia Weather Forecast



Issued at 4:55am WST 
on Saturday the 4th of February 2012

SYNOPTIC SITUATION AND FORECAST EXPLANATION:

A strong ridge of high pressure will develop south of the state during the in
the wake of a cold front moving along the south coast. An onshore flow will
produce isolated showers near the southern and Eucla coasts, tending scattered
over parts of the Eucla at first. Moisture left over from the recent rain over
southern parts of the state will produce some morning drizzle over the
Goldfields and southeastern Gascoyne, as well as adjacent parts of the SW Land
Division and the Interior. An onshore flow should also result in isolated early
morning showers and drizzle along the Gascoyne coast. A middle level disturbance
is currently producing isolated thunderstorms over the southern Interior and
northeast Eucla, which should clear during the morning. In the Kimberley,
isolated thunderstorms and showers remain confined to far northern and western
parts. A surface trough may trigger afternoon showers and thunderstorms over the
northeast Interior.

PROGNOSIS

FUTURE DEVELOPMENTS:


On Sunday the ridge continues to develop south of the state. Isolated showers
about the south coast east of Hopetoun should clear by late morning. The trough
moves to lie across the inland Pilbara and northern Interior,  with afternoon
thunderstorms and showers possible north of the trough in the Kimberley and
Interior.

On Monday the ridge develops further and isolated showers redevelop in along the
Eucla coast for a period in the morning. The trough across northern parts
lingers, with a heat low forming over the western Pilbara. Isolated afternoon
thunderstorms and showers possible in the northern Kimberley and also far west
inland Pilbara near the low.

On Tuesday a trough deepens near the west coast. Isolated afternoon
thunderstorms and showers possible in the northern Kimberley and also near the
trough north of Jurien Bay.

Yanchep to Mandurah and Offshore to Rottnest Island
Issued at 4:30 am WST on Saturday 4 February 2012
Valid until midnight Monday

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
Strong Wind Warning.

Synoptic Situation
A ridge of high pressure will develop to the southwest of the state today.

Forecasts:
Saturday until midnight: SE winds 18/23 knots, shifting S/SW 20/30 knots in the
afternoon. Seas 2.0m to 2.5m. Swell to 2.0m, rising to 3.0m later in the
evening.
Swell at Cottesloe: to 1.0m.
Winds on Melville Water: S/SE winds 15/20 knots shifting S/SW 20/25 knots for a
period from mid afternoon to early evening.

Sunday: SE winds 15/20 knots easing E/SE 10/15 knots during the morning. Winds
shifting S'ly 15/20 knots for a period in the afternoon. Seas 1.5m to 2.0m.
Swell to 3.5m.
Monday: E/SE winds 13/18 knots shifting S/SW 15/20 knots for a period in the
afternoon.

Current Swell Observations:
Rottnest Waverider Buoy: 1.9m.
Cottesloe Waverider Buoy: 0.7m.

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 11:30 am WST Saturday.

Kalbarri to Jurien Bay: (Including GERALDTON)
Strong Wind Warning.
Saturday until midnight: SE winds 20/30 knots, tending S'ly 20/30 knots inshore
in the afternoon and S/SE 25/33 knots throughout in the evening. Seas 2.5m to
3.0m. Swell 2.0m to 2.5m.
Sunday: S/SE winds 18/23 knots reaching 20/30 knots in the early morning and
again in the afternoon. Seas 2.0m to 2.5m. Swell to 2.5m.
Monday: E/SE winds 13/18 knots tending S'ly 18/23 knots for a period in the
afternoon.

Jurien Bay to Mandurah: (Including LANCELIN & CERVANTES)
Strong Wind Warning.
Saturday until midnight: S/SE winds 20/30 knots offshore. S/SE winds 18/23 knots
inshore, tending S/SW 20/30 knots in the afternoon and S/SE 20/30 knots in the
evening. Seas 2.0m to 2.5m. Swell 2.0m, rising to 3.0m late evening.
Sunday: SE winds 18/23 knots, tending S'ly 18/23 knots inshore for a period in
the afternoon. Seas 1.5m to 2.0m. Swell to 3.5m.
Monday: E/SE winds 15/20 knots tending S'ly 18/23 knots for a period in the
afternoon.

Mandurah to Cape Leeuwin: (Including MARGARET RIVER)
Strong Wind Warning.
Saturday until midnight: North of Cape Naturaliste: S/SE winds 20/30 knots
offshore. S/SE winds 18/23 knots inshore, tending S/SW 20/30 knots in the
afternoon and S/SE 20/30 knots in the evening. Seas 2.0m to 2.5m. Swell 2.0m,
rising to 3.5m in the evening.
South of Cape Naturaliste: S/SE winds 18/23 knots, increasing to S/SE 20/30
knots in the afternoon. Seas 1.5m to 2.0m. Swell 2.0m, rising to 3.5m in the
evening.
Sunday: E/SE winds 15/20 knots, tending SE'ly 20/25 knots in the evening. Seas
1.5m to 2.5m. Swell to 3.0m.
Monday: E/SE winds 15/20 knots. Inshore winds tending S'ly 10/15 knots for a
period in the afternoon.

Cape Leeuwin to Bremer Bay: (Including ALBANY)
Strong Winds Warning east of Windy Harbour.
Saturday until midnight: S/SW winds 18/23 knots, reaching 20/30 knots east of
Windy Harbour in the morning. Winds throughout tending S/SE 15/20 knots in the
evening. Seas 1.5m to 2.0m. Swell to 2.5m, rising to 3.5m in the evening.
Sunday: S/SE winds 15/20 knots easing to 10/15 knots late morning. Seas 1.0m to
1.5m. Swell to 3.5m.
Monday: E/SE winds 10/15 knots, increasing to SE 15/20 knots west of Windy
Harbour in the evening.

Bremer Bay to Israelite Bay: (Including ESPERANCE)
Strong Wind Warning.
Saturday until midnight: SW winds 20/30 knots easing to 15/20 knots west of
Esperance in the evening. Seas 1.5m to 2.5m. Swell to 2.5m.
Sunday: S/SW winds 15/20 knots easing to 10/15 knots in the afternoon. Seas 1.0m
to 1.5m. Swell to 3.5m.
Monday: SW winds 10/15 knots tending E/SE 10/15 knots in the afternoon.

Israelite Bay to SA Border:
Strong Wind Warning.
Saturday until midnight: S/SE winds 13/18 knots., tending SW 20/30 knots west of
Eyre in the morning, extending throughout by the afternoon. Seas 1.5m to 2.5m.
Swell to 1.5m, increasing to 2.5m in the afternoon.
Sunday: S/SW winds 20/30 knots easing to 15/20 knots in the late morning and to
10/15 knots in the evening. Seas 1.5m to 2.5m. Swell to 2.5m.
Monday: SW winds 10/15 knots.

Forecast for the Perth Metro Area
Issued at 4:50 am WST on Saturday 4 February 2012


Warning summary
Nil.

Forecast for Saturday 
Partly cloudy. Moderate to fresh SE'ly winds, tending fresh S'ly for a period in
the afternoon.

Precis:      Partly cloudy.                     
City:        Max 27 
Mandurah:    Max 27 

UV Alert:    8:20 am to 4:40 pm, UV Index predicted to reach 14 [Extreme]  
Fire Danger: Coastal Plain: HIGH        
             Hills:         HIGH        

Sunday       Sunny.                                 Min 13     Max 28
Monday       Sunny.                                 Min 15     Max 31
Tuesday      Sunny.                                 Min 17     Max 35
Wednesday    Sunny.                                 Min 19     Max 36
Thursday     Mostly sunny.                          Min 19     Max 36
Friday       Mostly sunny.                          Min 20     Max 35

The next routine forecast will be issued at 11:20 am WST Saturday.

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