Day to Day WA & Perth weather

trappers

Safety not guaranteed
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LOL actually some pretty nice weather at the moment a reasonably strong cold front and associated rain through today, with the chance of some storms tomorrow morning.
My obs from home showed the front coming through at about 9 am - dont trust the wetbulb, has a 5C offset I reckon, but dry-bulb and wind is correct.
upload_2019-7-4_22-28-5.png
 
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trappers

Safety not guaranteed
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Bickley observations ( where 2 dams are located) has recorded around 52mm in the last 24 hours which is a great result
Yeah ... I only trust Perth Rain Bucket for rainfall totals ... a semi reliable, marginally honest, somewhat accurate, haphazard reporter of rainfall events
https://twitter.com/PerthRainBucket
 

gareth_oau

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Yeah ... I only trust Perth Rain Bucket for rainfall totals ... a semi reliable, marginally honest, somewhat accurate, haphazard reporter of rainfall events
https://twitter.com/PerthRainBucket

How many buckets are strategically located? Quantities vary dramatically.

Snd I’m quite convinced that the rain clouds parts ways and go around canning vale all the time
 

trappers

Safety not guaranteed
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How many buckets are strategically located? Quantities vary dramatically.

Snd I’m quite convinced that the rain clouds parts ways and go around canning vale all the time
The Perth Rain Bucket is the most important rain bucket, no other rain buckets matter.

Where it is located is a closely guarded secret lest one of its many adoring fans steal it ...
 

Darb

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We have a little creek side camping spot deep in a forest North East of Perth - inland from gingin / Bindoon / Chittering. Anyway, even in late spring it is usually flowing and we've had many a trip there.

We went there lsat weekend after the 230mm+ over 3 weeks prior, and the creek and terrain were bone dry. The small creek crossings we anticipated were dry. I'm guessing the hills soak up an enormous amount of rain before they run!

We were utterly baffled. Did so much of the moisture over past month somehow skip the forest / northern pre-wheatbelt towns
 
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iagreewithhim

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A very long way from everybody
We have a little creek side camping spot deep in a forest North East of Perth - inland from gingin / Bindoon / Chittering. Anyway, even in late spring it is usually flowing and we've had many a trip there.

We went there lsat weekend after the 230mm+ over 3 weeks prior, and the creek and terrain were bone dry. The small creek crossings we anticipated were not dry. I'm guessing the hills soak up an enormous amount of rain before they run!

We were utterly baffled. Did so much of the moisture over past month somehow skip the forest / northern pre-wheatbelt towns
Your second para is correct. Even though we've had a lot of rain lately, we're still well down on our year-to-date average. The creeks don't start flowing properly until the soil profile saturates and the groundwater hits the surface in all the little high-level swamps and valleys. Across much of the hills, that just never happens any more. Therefore many creeks only flow for a day or so after a downpour, when the rain falls too fast to soak in.
 
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Rabid K9

A Local
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We have a little creek side camping spot deep in a forest North East of Perth - inland from gingin / Bindoon / Chittering. Anyway, even in late spring it is usually flowing and we've had many a trip there.

We went there lsat weekend after the 230mm+ over 3 weeks prior, and the creek and terrain were bone dry. The small creek crossings we anticipated were dry. I'm guessing the hills soak up an enormous amount of rain before they run!

We were utterly baffled. Did so much of the moisture over past month somehow skip the forest / northern pre-wheatbelt towns

Yes, this latest rainfall event has just triggered a winter response in many of the south west rivers systems even after 350mm plus in some areas. Our surface topography & hydraulic profiles are generally very low gradient, whilst our rainfall events are relatively low intensity which further encourages infiltration over run off.

My rule of thumb for anticipating river levels for paddling in the wetter areas further south is basically 200mm needed in a month to prepare the ground conditions for run off, obviously variable with preceding sub surface moisture levels etc. I won't even look at dusting off the whitewater paddles before that.

Some of my hidden granite treasures are just starting to move down in the big forests about 3-4 weeks behind schedule.
 

Rabid K9

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It's going to be pretty nice in Perth for the next week! Gotta love that blocking high! (sorry snow
lovers!) -
gfs_z500_mslp_aus_fh0-240.gif


just posted a thread on geopotential heights on twitter using this as an example!

All fear the "blocking high...."

While the blocking highs of winter arguably produce the best weather (clear air, light winds, long distance clarity, a sun mild enough to actually exert yourself & not combust) of the year in the south, they steal from our moisture bank for the endless summer ahead.

That slowing moving bastard is going to steer a few more systems into than south east than the westward peaking systems of the last month though.
 

LMB

Old but definitely not Crusty!
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I think the whole idea of London Court is a little bit embarrassing to be honest.
Stay on Topic CW LOL

(It’s cringie for me but my parents love it, and it’s their generation it was built for, so it exists as an example of ‘what was’ in Perth.)
 
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cold wombat

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Stay on Topic CW LOL

(It’s cringie for me but my parents love it, and it’s their generation it was built for, so it exists as an example of ‘what was’ in Perth.)

Yep, cringie is the right word, even with today's "English rain".

The first time I saw it over 20 years ago I was like "WTF?" That was on a scorching hot Australian day in the middle of a summer spell of endless clear blue skies. Would that have been caused by a "blocking high"? The place just looks like a failed homage to an idea that never existed here. What a place to sell Aboriginal Art tourist kitsch from. I wonder if those pieces was made in Indonesia? I'd like to say I'm not trying to rain on their parade, but I'd be lying. I wonder if we will get enough wind to remove those umbrellas- anyone know what the forecast holds wind wise?
 

Greysrigging

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I see the BOM had a forecast of snow down to 600m in the Great Southern for last night and perhaps persisting today. This would put a nice cover on Bluff Knoll, and a dusting on the Porongurups.
This is a photo my son took this morning near Koolyanobbing.... vigorous cold front and hail.
68282487_2681875661879191_7382559013818335232_n.jpg
 

gareth_oau

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I see the BOM had a forecast of snow down to 600m in the Great Southern for last night and perhaps persisting today. This would put a nice cover on Bluff Knoll, and a dusting on the Porongurups.
This is a photo my son took this morning near Koolyanobbing.... vigorous cold front and hail.
68282487_2681875661879191_7382559013818335232_n.jpg

that's impressive!


We recorded 26mm of rain overnight in Perth. Bickley in the hills scored 48mm in the same time
 

POW Hungry

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Perth Skew-T sounding showing 1200m Freeze Level this morning @6am Local.
Upper level temps ok to see snow down to 1000m, so looks like enough in to see snow down to 800m for the South Coastal Region.
Albany sounding not yet available.
 

cold wombat

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Perth often enough manages to get the required temps, and often enough the required moisture, but never both at once.

Ah well, never mind. We lack the vertical to take advantage anyway.
 

gareth_oau

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An ever so light Easterly to blame for that one.
The Mount Lawley site got down to 3.3C.
Airport down to +1.9C
With a few negatives registered inland.

we live closer to the Jandakot weather station and scoresd a low of 1.9 with apparent of 0.3.

But Bickley up in the hills, and closer to that Easterly scored a much milder low of 5.2
 

POW Hungry

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we live closer to the Jandakot weather station and scoresd a low of 1.9 with apparent of 0.3.

But Bickley up in the hills, and closer to that Easterly scored a much milder low of 5.2
Pretty stunning inversion, which is not something you see alot of in WA. Hence the warmer temps on elevated terrain.
+8C difference between 300/400m near the surface.
IDS65024.94610.png
 
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DiscoStuAU

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2 more cold nights on the way for Perth, 4 tonight and 5 Monday.

Stunning day today, blue skies and lovely out in the sun. Living in Melbourne City now I do forget how cold Perth gets in the evening during winter months
 
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gareth_oau

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I enjoy the cold mornings.

Bought myslef a really nice Calvin Klein jacket in Canada, and I only get to wear it on those cold mornings.

Nice to see all those other commuters shivering on the platform :D LOL
 
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cold wombat

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I enjoy the cold mornings.

Bought myslef a really nice Calvin Klein jacket in Canada, and I only get to wear it on those cold mornings.

Nice to see all those other commuters shivering on the platform :D LOL

Perth people have NFI how to dress for the cold. Sort of understandable in a way because those freezing mornings never last long into the day, but geeze it's funny to see!
 
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