lee trough

lee trough

[′lē ‚trȯf]
(meteorology)
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This is where the 30/15 rule comes into play due to the lee trough effect set up by the Tasmanian Central Plateau.
i) Under broad westerly (IMW to SW) wind flow: Winds within a line running from 3o nautical miles off Eddystone Point to 15 nautical miles off Maria Island may be influenced by a lee trough (i.
i) Under broad westerly (NW to SW) wind flow: Winds within a line running from 30 nautical miles off Eddystone Point to 15 nautical miles off Maria Island maybe influenced by a lee trough (i.
In summer, southeastern Tasmania can become very hot in a NW gradient stream, causing pressures to fall even more strongly than they do as a normal lee trough forms over eastern and southeastern Tasmania.
i) Under broad westerly (NW to SW) wind flow, the east coast of Tasmania, say within 30 nautical miles of the coast, can come under the influence of a lee trough.
i) Under broad westerly (NW to SW) gradient (900m) wind flow, a lee trough will usually form on the east coast of Tasmania, and effect waters up to 30nm of the coast.