Forecast for Melbourne, issued 19th December, 4pm.

Forecast for Melbourne, issued 19th December, 4pm.

Tonight : Patchy rain and isolated thunderstorms.

Thursday : Early rain and isolated thunderstorms, easing to a few showers. Winds shifting cooler SW early morning.

Rainfall 8 – 15 mm

Min 13   Max 22

Friday : An early shower or two then fine, mostly cloudy with light to moderate SW winds tending SE later.

Min 12  Max 21

Saturday : Fine and mild to warm, partly cloudy, with light SE winds.

Min 15   Max 27

Sunday : Fine and sunny at first,  very warm with cloud increasing later and rain developing overnight. Light to moderate N/NE winds ahead of a Sw change at night.  Rainfall 2 – 5 mm

Min 16  Max 34

Monday :  Cooler with  rain periods and isolated thunderstorms.  Light to moderate SE winds.  Rainfall 8 – 15 mm

Min 17   Max 26

Tuesday : Cool and cloudy with a few showers, moderate to fresh Sw easing later and tending light Se.

Min 16  Max 22

Wednesday : Fine warm and sunny, light SE winds.

Min 16  Max 27

Notes on the Weather :   A very active low pressure trough dominates the country, tropical moisture is being advected South into the trough from NW WA, and a high pressure ridge is over SW WA. A cold front is laying across Victoria, with a low pressure trough through NSW.

A cold front is approaching Victoria and a band of rain and isolated thunderstorms will develop today from the west. Warm weather will contract Eastwards tomorrow afternoon as a cool change moves through, leaving cooler conditions with scattered showers for most of Southern Victoria on Thursday and into Friday.

By Saturday we will see a clearance to fine and warm weather, with warm to hot conditions developing over Victoria on Sunday. As the day goes on cloud will begin to increase from the west, and on Monday a band of rain and thunderstorms will develop and become widespread across the state. This will contract Eastwards on Xmas day with cooler conditions becoming established and scattered showers will persist in the south.

On Boxing Day the weather will be cool and fine, although there may be some lingering shower activity in the East with a potential blocking pattern possible.

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