# We've just had about 30mm of rain in half an hour

**URL:** <https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [October 14, 2014, 11:30am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288 "2014-10-14T11:30:28Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Cunctator](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Cunctator](https://boards.straightdope.com/u/Cunctator)\
**Post date:** [October 14, 2014, 11:30am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/1 "2014-10-14T11:30:28Z")

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The place is awash. And it’s cold. And there’s snow falling in the mountains to the west of Sydney. Winter is back with a vengeance!

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**Author:** ![kambuckta](https://avatars.discourse-cdn.com/v4/letter/k/53a042/32.png) [@kambuckta](https://boards.straightdope.com/u/kambuckta)\
**Post date:** [October 14, 2014, 8:33pm UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/2 "2014-10-14T20:33:02Z")

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> [@Cunctator](#):
>
> The place is awash. And it’s cold. And there’s snow falling in the mountains to the west of Sydney. Winter is back with a vengeance!

Was watching the drama unfold on the BOM website! This morning it said you had 70mm since 9.00am yesterady. Just a shame that the rain fell on the seaboard and not further out west where it’s desperately needed.

Oh well, not time to put the wellies away just yet…more rain today. 😛

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**Author:** ![Cunctator](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Cunctator](https://boards.straightdope.com/u/Cunctator)\
**Post date:** [October 14, 2014, 11:57pm UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/3 "2014-10-14T23:57:46Z")

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My gauge at home had almost 80mm this morning.

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**Author:** ![boffking](https://avatars.discourse-cdn.com/v4/letter/b/858c86/32.png) [@boffking](https://boards.straightdope.com/u/boffking)\
**Post date:** [October 15, 2014, 12:23am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/4 "2014-10-15T00:23:45Z")

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We got 6 inches in 4 hours here a couple months ago. Roads all over town were flooded out and my garden has never been the same since.

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**Author:** ![Sunspace](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/sunspace/32/1250_2.png) [@Sunspace](https://boards.straightdope.com/u/Sunspace)\
**Post date:** [October 15, 2014, 3:31am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/5 "2014-10-15T03:31:04Z")

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Aren’t you guys supposed to be getting spring?

Parts of Toronto got [a month’s worth of rain in two hours](http://news.nationalpost.com/2013/07/08/commuter-go-train-partially-underwater-after-toronto-floods-passengers-evacuated-by-zip-line/) a while ago.

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**Author:** ![Bullitt](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bullitt/32/5725_2.png) [@Bullitt](https://boards.straightdope.com/u/Bullitt)\
**Post date:** [October 15, 2014, 4:24am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/6 "2014-10-15T04:24:55Z")

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Care to send some of that rain my way? We’re dry, and we’ve been dry for far too long.

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**Author:** ![Cunctator](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Cunctator](https://boards.straightdope.com/u/Cunctator)\
**Post date:** [October 15, 2014, 5:33am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/7 "2014-10-15T05:33:07Z")

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> [@Sunspace](#):
>
> Aren’t you guys supposed to be getting spring?

Indeed. But the weather will warm up again soon enough. In the meantime however there was 20cm of snow last night in the mountains. It’s probably all melted by now.

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**Author:** ![Isilder](https://avatars.discourse-cdn.com/v4/letter/i/cc9497/32.png) [@Isilder](https://boards.straightdope.com/u/Isilder)\
**Post date:** [October 15, 2014, 10:44am UTC](https://boards.straightdope.com/t/weve-just-had-about-30mm-of-rain-in-half-an-hour/701288/8 "2014-10-15T10:44:59Z")

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I believe the very long trough between the two large high’s created the storm, the low was an effect of the storm, not the creator of it.
