All Seasons in the Southern Hemisphere

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Profile Wiggo
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Message 2135341 - Posted: 30 Apr 2024, 20:38:56 UTC

For the month of April our min. av. temp was 1.2C up at 9C while our av. max was up by 1.5C at 21.6C.

Our rainfall was also up by 55.5mm at 97mm while our year to date is still 42.25mm above average at 353.75mm.

Anyhow May is off to a damp start.

Cheers.
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Message 2135676 - Posted: 10 May 2024, 10:17:39 UTC

Here's something new- the BoM has issued a space weather warning.
The Bureau of Meteorology's Australian Space Weather Forecasting Centre has forecast a geomagnetic storm event of level G4 (severe) on the global G-scale.
...
Geomagnetic storms of G4 level can potentially disrupt:

critical infrastructure such as power grids, causing power outages
satellite services, affecting communications and global position, navigation and timing services that use high-frequency radio communication
The Bureau continues to monitor the situation and will provide updates of significant changes.
G5 is the highest warning level.
Grant
Darwin NT
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Message 2135761 - Posted: 12 May 2024, 8:00:05 UTC

From last night's storm.


More expected tonight.
Grant
Darwin NT
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Profile ML1
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Message 2135780 - Posted: 13 May 2024, 0:50:24 UTC - in response to Message 2135761.  

Wow!
See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)
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Message 2135899 - Posted: 16 May 2024, 14:54:15 UTC - in response to Message 2135761.  

From last night's storm.
I'm curious about the photographic data. What aperture ratio does the lens need (standard or expensive high-speed lenses) and the exposure time (seconds?). I suspect you can't see northern lights at all with the naked eye at low latitudes. Correct?
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Message 2135901 - Posted: 16 May 2024, 15:25:25 UTC - in response to Message 2135899.  

From last night's storm.
I'm curious about the photographic data. What aperture ratio does the lens need (standard or expensive high-speed lenses) and the exposure time (seconds?). I suspect you can't see northern lights at all with the naked eye at low latitudes. Correct?
Yes you won't see the aurora borealis (northern lights) here down under, but you can see the aurora australis (southern lights).

Sadly I missed the spectacle due to the heavy cloud and rain occurring at the same time.

Cheers.
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Message 2135906 - Posted: 16 May 2024, 16:06:07 UTC - in response to Message 2135901.  

Yes you won't see the aurora borealis (northern lights) here down under, but you can see the aurora australis (southern lights).
D'oh!
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Message 2135911 - Posted: 16 May 2024, 16:47:53 UTC - in response to Message 2135899.  
Last modified: 16 May 2024, 16:48:19 UTC

I've had luck with cheap camera (less than 10gbp) nd an expensive one (no change from 2000gbp). Small appature (large f-mumber), long exposure (several seconds) is said to be best, but the auraura is realy intense then even a point amd click camera or phone will get reasonable results.
Bob Smith
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Message 2140095 - Posted: 1 Sep 2024, 10:22:40 UTC
Last modified: 1 Sep 2024, 10:23:16 UTC

Well, Tassie is certainly getting the snot knocked out of it lately.
Gale force (and stronger) winds over the last few days, and tonight and tomorrow even stronger winds are expected & this time with flooding to top it off.
Power outages for some are likely to take up to a week to be resolved.
Grant
Darwin NT
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Message 2144906 - Posted: 6 Jan 2025, 20:00:25 UTC

Just what some of us really don't need during our wet season.

Rare summer La Niña could be forming in Pacific, raising risk of wet weather start to 2025.

The great rainmaker, La Niña, could be back for the fourth time in five years, increasing the prospect of a soaking start to 2025 across most of Australia.

La Niña refers to a cooling of the tropical Pacific Ocean and the subsequent shift in global weather patterns, including a strengthening of moist easterly winds blowing towards Australia, and a subsequent increase in cloud development and rain over the longitudes.

Your average La Niña forms in winter, peaks in late spring, then gradually weakens through summer. However, the current edition has not played by the rule book — for only the second time in 75 years, its onset has arrived in the middle of summer........
Starting today we're expecting at least 10 days of wet weather which could see our average January rainfall fall in that time. :-O

Cheers.
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Message 2146487 - Posted: 16 Feb 2025, 7:03:46 UTC
Last modified: 16 Feb 2025, 7:07:10 UTC

I was wondering why the temp here dropped so much so quickly in the early hours of this morning. It snowed down south pushing a lot of cold air up the western side of this range.

Coldest February night on record in parts of Victoria with summer snow in the Alps.

Melbourne has shivered through its coldest February night on record on Saturday as summer snow flurries fell in the Victorian Alps.

The temperature in the city dipped to 9.9 degrees Celsius on Saturday, breaking the previous February record of 10C on February 15, 2017.

At Mount Baw Baw, a 26-year record was smashed when the overnight temperature plummeted to minus 1.4C, breaking the previous record of -1C on February 8, 1999.

Bureau of Meteorology senior forecaster Keris Arndt said the cold front that moved into Victoria on Friday was dragging very cold air from the Southern Ocean over the state.....
I wouldn't have liked to be the 1 sleeping in that swag last night.

Cheers.
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Message 2146489 - Posted: 16 Feb 2025, 9:30:54 UTC - in response to Message 2146487.  
Last modified: 16 Feb 2025, 9:31:09 UTC

Melbourne has shivered through its coldest February night on record on Saturday as summer snow flurries fell in the Victorian Alps.
It's because of the Global W... Freezing, they tell us each day in the TV news.
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Message boards : Cafe SETI : All Seasons in the Southern Hemisphere


 
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