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Extreme Rainfall Event in Western Australia!!!

 
Luisport

User ID: 30221656
Portugal
12/18/2012 07:46 AM

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Extreme Rainfall Event in Western Australia!!!
Weather Underground‏@wunderground

"Extreme Rainfall Event in Western Australia" [link to www.wunderground.com]
Luisport (OP)

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12/18/2012 07:48 AM

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Re: Extreme Rainfall Event in Western Australia!!!
Extreme Rainfall Event in Western Australia

The Australian Bureau of Meteorology just released (December 17th) a special statement concerning recent extraordinary rainfalls that occurred in the southwestern portion of Western Australia on December 10-13 (last week). All-time 24-hour precipitation records were broken at several locations when more than 8” (200 mm) of rain fell in less than 24 hours.

The special statement notes that “A deep surface trough interacted with a slow moving middle level low off the Western Australian west coast to produce widespread showers and thunderstorms across most of Western Australia from December 10 to 13.”

Maps of 24-hour rainfall amounts in Western Australia on December 12th and 13th. The heaviest rains fell in the extreme southwestern portion of the state on December 13th. Maps courtesy of the Australian Bureau of Meteorology.

The area most impacted was the Bunbury to Collie region located about 80 miles south of Perth. Collie measured 157.2 mm (6.19”) on December 13th(126 mm/4.96” of which fell in just 12 hours). The town not only smashed its previous December daily rainfall record of 42 mm/1.65” (set on December 24, 1987) but also broke its greatest 24-hour rainfall for any month in a 106-year long period of record. The amount also broke its December monthly record of 80.6 mm (3.17”) set in 1913.


Yourdamung Lake, 20 kl northeast of Collie measured 210.8 mm (8.30”), the 5th highest daily rainfall for any location, any month, in southwestern Australia (all-time record remains 239.8 mm/9.44” at Illalangi on March 10, 1917). The 210 mm at Yourdamung Lake also broke its all-time monthly December record. Flooding damaged 40 homes in Collie but was otherwise not severe.

This portion of Australia has a pleasant Mediterranean climate similar to the California south coast. Perth is Australia’s 4th largest city with a population of 1.8 million and is often cited as one of the world’s best places to live. It has an annual average rainfall of about 850 mm (33.5”) but December is normally one of its driest months with an average of just 13 mm (0.5”). So one can see how extraordinary this event is for the time of year. Ironically, the 2nd greatest rainstorm to occur in the region over the past 100 years happened almost exactly one year ago on December 11, 2011.

Christopher C. Burt
Weather Historian
[link to www.wunderground.com]
Luisport (OP)

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12/18/2012 07:57 AM

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Re: Extreme Rainfall Event in Western Australia!!!
hiding
Luisport (OP)

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12/18/2012 08:10 AM

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Re: Extreme Rainfall Event in Western Australia!!!
bump
Anonymous Coward
User ID: 13890280
Russian Federation
12/18/2012 08:17 AM
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Re: Extreme Rainfall Event in Western Australia!!!
Rainpocalypse now...
Luisport (OP)

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12/18/2012 08:18 AM

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Re: Extreme Rainfall Event in Western Australia!!!
Rainpocalypse now...
 Quoting: Anonymous Coward 13890280


ohyeah
Luisport (OP)

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Portugal
12/18/2012 09:05 AM

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Re: Extreme Rainfall Event in Western Australia!!!
bump
Luisport (OP)

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12/18/2012 04:55 PM

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Re: Extreme Rainfall Event in Western Australia!!!
any update?
Dr. AculaModerator
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User ID: 55721
United States
12/18/2012 05:02 PM

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Re: Extreme Rainfall Event in Western Australia!!!
stay safe Aussies!

peace

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