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540 line

Indicates the 540 decametre line on the 1000-500 thickness chart. Often used as a rough guide to determine when an airmass is cold enough to produce snowfalls on the Australian southern alpine areas.

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Fog blanketing Adelaide and Canberra

07:25 EST Fog has been blanketing parts of southeastern Australia this morning, including the Adelaide and Canberra areas, affecting road and air traffic.

12:54 EST Frosty night across southern NSW and ACT
10:57 EST Mild Saturday for the Top End
17:25 EST Just keep seeding
16:43 EST Rain impacts on central west farming

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540 line

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Fog blanketing Adelaide and Canberra

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