Cold!!

WadeH (Wade) · #1 25-06-2010, 01:00 PM

We were warned by the BOM that it was going to be a little chilly this morning but -4deg C in our little valley is crazy! White and ice everywhere. For Perth this is almost unheard of.
Tomorrow is suposed to be much the same so its going to be cool in the evening for the partial luna eclipse.

pgc hunter · #2 25-06-2010, 01:25 PM

I always wondered why Perfff gets so cold at night in winter - quite a bit colder than Melbourne. It's on the coast, has warmer sea temps than Melbourne and is much further north...

stattonb (Statton) · #3 25-06-2010, 01:45 PM

i live in Inverell and it gets into the -4 or more here during winter sucks but i still get my scope out lol

rogerg (Roger) · #4 25-06-2010, 02:04 PM

Since installing my weather station we've had an average of about 10-16 nights blow zero every year, several as low as -4. However since moving the weather station from on top of the roof to under the patio 2 years ago it's never got below -2, and this morning it was -2 degrees! cold alright.

Birdbaths frozen solid, frost, ice, .. like you say Wade.

... and yes, not looking forward to the eclipse tomorrow night! I'm going to be sticking it out for the 5 hours to get the full sequence but it's shaping up to be quite an endurance test!!

astroron (Ron) · #5 25-06-2010, 02:12 PM

Roger,why would you put a weather station under a patio

There is a temperature difference even between the thermomitor on my verender and the one on my weather station on the top of my observatory.
Your weather station under the verender will not give you a proper reading

SkyViking (Rolf) · #6 25-06-2010, 02:15 PM

Had no idea you guys have it so cold in Australia over winter. Here in Auckland we've not had negative temps since I came here (last 7 years).

I'm originally Danish though, so it's not like cold scare me off. I've often
been out all night in -15 or colder. It sure makes it fun to carry all the ice-cold metal gear in afterwards when it literally sticks to your skin...

rogerg (Roger) · #7 25-06-2010, 02:26 PM

Quote:

Originally Posted by astroron

Roger,why would you put a weather station under a patio

There is a temperature difference even between the thermomitor on my verender and the one on my weather station on the top of my observatory.
Your weather station under the verender will not give you a proper reading

Well, to clarify ... the rain and wind are above the patio, the temp and other just under the roof of the patio. It was on the roof of the house, but that was significantly affected by the roof (reading hot in summer). So I moved it to the next best location I had

I should rig up a stronger bracket to hold the temp stuff out from under the patio I guess, but just haven't got to it

At the moment extra shading (pot saucers with holes in them) is rigged up over the temp sensor to shade it more, and as the bracket isn't strong enough to hold it I have that hung partially from the roof of the patio to take weight off the flimsy plastic bracket

It is litterally right on the edge of the patio.

sheeny (Al) · #8 25-06-2010, 03:12 PM

Quote:

Originally Posted by SkyViking

Had no idea you guys have it so cold in Australia over winter. Here in Auckland we've not had negative temps since I came here (last 7 years).

Ah... the looxury (please insert broad Yorkshire man accent

) of being close to the sea!

Today feels cold here, but the facts from my weather station say otherwise... its allegedly 8.5°C! I can't wait till this WA cold weather gets here and we can have a proper winter!

So far this month we've had 8 air frosts, 2 days of snow and the minimum temp was -5.9°C... and we are less than 100km from the ocean (and Sydney) as the crow flies.

Al.

MrB (Simon) · #9 25-06-2010, 03:31 PM

Yep, sure was cold this morn. I'm right on the beach so it wasn't -2, but brrrrrrrrr!

mswhin63 (Malcolm) · #10 25-06-2010, 04:19 PM

First time time saw frost on the lawn this morning in years.

leon · #11 25-06-2010, 09:00 PM

There you go mate, nice and crisp and clear, enjoy.

Leon

pgc hunter · #12 25-06-2010, 10:21 PM

Perth is down to 5C at 8:15pm..... 2C colder than same time last night

Meanwhile at 10:15pm here it's 11C.....with rain

Still dont get how the hell Perth can get so cold when they are much further north than Melbourne, right on the coast, with warmer sea temps....it doesn't make sense. Last time I saw white grass here was about 5 years ago!

rogerg (Roger) · #13 25-06-2010, 10:34 PM

Quote:

Originally Posted by pgc hunter

Perth is down to 5C at 8:15pm..... 2C colder than same time last night

Meanwhile at 10:15pm here it's 11C.....with rain

well, outside here (under my patio, as previously discussed

) it's 2.3 degrees at 8:32 WST. Chilly one tonight.

Quote:

Originally Posted by pgc hunter

Still dont get how the hell Perth can get so cold when they are much further north than Melbourne, right on the coast, with warmer sea temps....it doesn't make sense. Last time I saw white grass here was about 5 years ago!

not really sure sorry. Certainly the hills here are regularly colder in winter and hotter in summer. While I have many nights below zero the Swan Coastal Plain has few if any (normally).

astroron (Ron) · #14 25-06-2010, 10:38 PM

No below Zero this year so far, coldest so far 3.2C.
Banana leaves still nice and green.

pgc hunter · #15 25-06-2010, 10:42 PM

Coldest here is 0.6 so far. Coldest in the city is 3.6C......come'on old man winter, give us a nice hard frost. So rare, it's as fun as a 45C day

@rogerg, that's cold....I thought it was bad seeing 2.5C at 1am, let alone at 8.30! Someone must know why Perth can get so cold, while even Hobart struggles to see such temps!

rogerg (Roger) · #16 25-06-2010, 11:43 PM

0.9 degrees now here, and time for me to call it a night. I will be sure to report how cold it gets in the morning

Of course all this is nothing comapred to what Canberrian's must have every night!

DavidU (Dave) · #17 25-06-2010, 11:45 PM

In Melb I had 3 days this week where all the cars and lawn were iced up.(all ice melted by 9am) I get up at between 5am and 6am. I have had the scope covered in ice as well.

OICURMT · #18 26-06-2010, 12:54 AM

Quote:

Originally Posted by rogerg

However since moving the weather station from on top of the roof to under the patio 2 years ago it's never got below -2, and this morning it was -2 degrees!

Quote:

Originally Posted by astroron

There is a temperature difference even between the thermomitor on my verender and the one on my weather station on the top of my observatory.
Your weather station under the verender will not give you a proper reading

Umm... there's a specific reason why the thermometer reads higher when under cover (think along the lines of "radiation" or radiant heat/energy, and I'm not talking about the house or patio)...

First person to explains it wins... (Hint: Think Thermodynamics)...

I'll give a second hint if noone gets it soon... (A "google-able" hint, is that a word?)...

pgc hunter · #19 26-06-2010, 08:55 AM

Quote:

Originally Posted by DavidU

In Melb I had 3 days this week where all the cars and lawn were iced up.(all ice melted by 9am) I get up at between 5am and 6am. I have had the scope covered in ice as well.

where are you located?

rogerg (Roger) · #20 26-06-2010, 09:26 AM

Quote:

Originally Posted by OICURMT

Umm... there's a specific reason why the thermometer reads higher when under cover (think along the lines of "radiation" or radiant heat/energy, and I'm not talking about the house or patio)...

Yeah I know, and there's specific reasons it reads higher on top of a tile roof too

Like I said, trade-offs and so on, I'm not measuring the beuro's weather for them so it'll do until I make it better