Perth Rainfall Statistics

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Postby Tim S » Thu Jul 31, 2008 4:57 pm

Cool, thanks for that thislife, looks as though there was a period of 30 days of succesive ran days from 8th June to 7th July 1945, that must be close to a record too.

Interestly that gardens site recorded 1338mm for that year whereas the airport recorded only 1096mm, quite a large difference, although the averages show that gardens site as quite a wet one.
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Postby Tasman » Fri Aug 01, 2008 4:50 pm

It was interesting to hear on the radio the other day that Perth is now the second wettest capital city in Australia. Darwin is still in top spot :D

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Postby peterperthh » Fri Aug 01, 2008 6:30 pm

Dunno about that this year. I did a bit of an excel spreadsheet for a few
city's and Im pretty sure sydney and brisbane have had more rain. And they average more rain as well. Hobart has had less than half the rain perth has had this year but isnt included.

Maybe they meant like the most out of the southern capitals? Which is
silly because perth is actually on a higher latitude than sydney :)

Perth, Melbourne, Adelaide, Sydney, Brisbane

JAN 0, 32.8, 66.8, 57, 184.4

FEB 47.6, 24.6, 3, 258.4, 216.8

MAR 14.2, 70.8, 16.4, 63.4, 41.8

APR 153.6, 16.4, 45, 146.6, 16.8

MAY 59.6, 44, 63.4, 3, 52

JUN 142, 14.4, 30.4, 127.2, 121.8

JUL 185.4, 44.2, 66.8, 89.6, 91.4

TOT 602.4, 247.2, 291.8, 745.2, 725

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Postby thislife » Fri Aug 01, 2008 6:51 pm

Correct, Sydney is second in place with 745mm (Ob Hill), however Rose Bay right on the coast of the eastern suburbs stands at (approx) 812mm.

July 2008 saw Perth Metro with 179.4mm - exactly the same as last year's. Airport had 205mm - highest for any month since 216mm in 2000. Last time the Metro site recorded a monthly total over 200mm was in June 2005 with 251mm.

Metro site has this year so far seen two new rainfall records set - February with 47mm & April with 153mm; this (April only) applies to the Airport site as well with 135mm; beating the old record of 113mm set in 1951. For the RO site - 1926 with 148mm.

I noticed the monthly totals of 139mm for January 2000 and 150mm for Febuary 1992, can anyone tell me how come those came to be? Ex cyclones?

Perth (both sites) is top of the table for all state capital July 2008 rainfalls, good for you guys :D
Last edited by thislife on Fri Aug 01, 2008 7:06 pm, edited 1 time in total.

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Postby thislife » Fri Aug 01, 2008 7:02 pm

[quote="Tim S"]Cool, thanks for that thislife, looks as though there was a period of 30 days of succesive ran days from 8th June to 7th July 1945, that must be close to a record too.

I think so from a quick glance, have daily rainfalls dating back to 1877. I'll check properly for you if you want?

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Postby Tim S » Fri Aug 01, 2008 8:46 pm

thislife wrote:...I noticed the monthly totals of 139mm for January 2000 and 150mm for Febuary 1992, can anyone tell me how come those came to be? Ex cyclones?


The January 2000 figure was mainly due to a large amount of rain that came on the 21st and the 22nd of January, mostly overnight on the 21st/22nd if my memory serves me correctly. Perth got about 100mm that day I think. It wasn't due to a ex-tc rather a tropical depression of the NW coast feeding its moisture into a heat trough that had formed down the west coast, you can see the archived synoptic here: http://www.bom.gov.au/cgi-bin/charts/ch ... 220000.gif

also a bit on that event from the BoM's media release for that month (the earliest one on the web) http://www.bom.gov.au/announcements/med ... a/0001.pdf

The 1992 event was a similar one I think but I have no way of confirming that one, unfortunatly the BoM 's synoptic archive only goes back to '99 and I cant find any other archives on the web.

Will be great if you can see if that was the longest wet spell, seems rather long to me, longest I can remember probably doesn't extend past 2 weeks! :)
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Postby SilverRain » Fri Aug 01, 2008 10:16 pm

thislife wrote:I think so from a quick glance, have daily rainfalls dating back to 1877. I'll check properly for you if you want?


Is there anywhere to find these archives on the net? I have daily records for the Perth Ap site from the Bureau, but thats about it.

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Postby Fu Manchu » Sat Aug 02, 2008 10:19 am

I did find somewhere on the BoM site a contact email address in amongst the monthly records (somewhere around that link) for more detailed info.
It will be somewhere.

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Postby thislife » Thu Aug 07, 2008 12:08 pm

Tim S wrote:
thislife wrote:...I noticed the monthly totals of 139mm for January 2000 and 150mm for Febuary 1992, can anyone tell me how come those came to be? Ex cyclones?


The January 2000 figure was mainly due to a large amount of rain that came on the 21st and the 22nd of January, mostly overnight on the 21st/22nd if my memory serves me correctly. Perth got about 100mm that day I think. It wasn't due to a ex-tc rather a tropical depression of the NW coast feeding its moisture into a heat trough that had formed down the west coast, you can see the archived synoptic here: http://www.bom.gov.au/cgi-bin/charts/ch ... 220000.gif

also a bit on that event from the BoM's media release for that month (the earliest one on the web) http://www.bom.gov.au/announcements/med ... a/0001.pdf

The 1992 event was a similar one I think but I have no way of confirming that one, unfortunatly the BoM 's synoptic archive only goes back to '99 and I cant find any other archives on the web.

Will be great if you can see if that was the longest wet spell, seems rather long to me, longest I can remember probably doesn't extend past 2 weeks! :)


Thanks for that :). Re 1992 - interesting this was the only instance (115 years; RO site only) where the daily fall exceeded 100mm (120.6mm to be exact).

As for the longest stretch of raindays - here are the top 3 instances:

30 days 18 July - 16 August 1907 (279.7mm)
30 days 8 June - 7 July 1945 (513.2mm)
28 days 18 June - 15 July 1947 (203.6mm)

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Postby thislife » Thu Aug 07, 2008 12:13 pm

SilverRain wrote:
thislife wrote:I think so from a quick glance, have daily rainfalls dating back to 1877. I'll check properly for you if you want?


Is there anywhere to find these archives on the net? I have daily records for the Perth Ap site from the Bureau, but thats about it.


Ask the BOM's Perth Office, they'll supply the data that you ask for, however there's a cost involved but doesn't really amount to much (I paid $17 & they're very helpful, always a pleasure to deal with) :)

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Re: Perth Rainfall Statistics

Postby Tasman » Sun Aug 10, 2008 9:26 pm

Looks like very little rain now for at least the next seven days. That is going to make it quite a long dry stretch we're into now :?

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Re: Perth Rainfall Statistics

Postby thislife » Sun Aug 24, 2008 7:59 pm

Very sorry to hear about the continuing awful "dryness", I do really hope Sept will bring some improvement in terms of more rain for you WA folk.

Current Aug. rainfall stands at 26.4mm (Metro site) & 16.6mm (Aero site).

Driest Augusts:-

RO:-
27.5mm 1881
11.8mm 1902 (driest on record)
18.4mm 1978

Aero:-
29.7mm 1956
23.2mm 1978 (driest on record)

Metro:- driest Aug. is 81.2mm in 2000, will be broken by this year's one if current models/forecasts stay true (I really hope not for your sake).

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Re: Perth Rainfall Statistics

Postby Benni.G. » Sun Aug 24, 2008 11:23 pm

RE : February 1992 121mm Perth's wettest day on record, about 150mm for the month
Did a Google search on this and it was 8 - 9 February 1992 due to thunderstorms.

I remember this event as I had just moved to Perth from Kalgoorlie and was quite excited about the amount of rain. I recall only receiving about 80mm at Roleystone but, some areas near Kwinana got about 250mm or so. One of the Oil refineries tanks caved in I kinda remember, a bridge got almost washed away in Roleystone and I remember the next door neighbour saying how they opened the front door and a torrent of water went raging through.

I think it was due to some rare event, BOM would know :wink:
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Re: Perth Rainfall Statistics

Postby Tim S » Mon Aug 25, 2008 11:25 am

I am not sure if the question was asked in here or not, but I remember someone asking where the perth Regional Office site was. I didn't know the answer myself until I came across a photo of it in the book I am reading (The Weather Watchers). It was at 127 Wellington Street (just near the corner of Hill St and opposite Wellington Square in East Perth), which appears to have been demolished and now has some office/apartments in its place
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Re: Perth Rainfall Statistics

Postby Vinny » Sun Oct 12, 2008 11:57 pm

I wonder what the final rainfall total for 2008 will be.? 735mm 799mm?
Yeppoon Annual Average Rainfall is (BOM) = 982.5mm
2012 Yeppoon 976.8mm
2014:1114.2mm

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Re: Perth Rainfall Statistics

Postby davo » Mon Oct 20, 2008 3:34 pm

Hey all, it seems that no one has pointed out or discovered that the Australian Weather News website has recently put up a nearly complete archive of daily rainfall from 1852! It seems to be all sites in Australia.

http://www.australianweathernews.com/re ... ement.html

Enjoy - I sure did :D

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Re: Perth Rainfall Statistics

Postby Fu Manchu » Mon Oct 20, 2008 4:24 pm

Tim S wrote:I am not sure if the question was asked in here or not, but I remember someone asking where the perth Regional Office site was. I didn't know the answer myself until I came across a photo of it in the book I am reading (The Weather Watchers). It was at 127 Wellington Street (just near the corner of Hill St and opposite Wellington Square in East Perth), which appears to have been demolished and now has some office/apartments in its place


I did work experience there :)

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Re: Perth Rainfall Statistics

Postby Vinny » Tue Oct 21, 2008 8:11 pm

there is something wrong with the ocf page it is stuck on predictions for 19 october
Yeppoon Annual Average Rainfall is (BOM) = 982.5mm
2012 Yeppoon 976.8mm
2014:1114.2mm

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Re: Perth Rainfall Statistics

Postby Tim S » Tue Oct 21, 2008 9:16 pm

davo wrote:Hey all, it seems that no one has pointed out or discovered that the Australian Weather News website has recently put up a nearly complete archive of daily rainfall from 1852! It seems to be all sites in Australia.

http://www.australianweathernews.com/re ... ement.html

Enjoy - I sure did :D


That is an awesome collection of records, it pretty much has every single weather observation ever taken in Australia! :shock:
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Re: Perth Rainfall Statistics

Postby Vinny » Wed Jun 09, 2010 11:13 am

That website is great.
Yeppoon Annual Average Rainfall is (BOM) = 982.5mm
2012 Yeppoon 976.8mm
2014:1114.2mm

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