Equinoctial Gales

NZ Thunderstorm Soc · Mon 21/09/2020 22:07

I don't know if that is the correct spelling but I thought I would stat a new topic as these gales could,be influential as we pass the Spring equinox or the Ostara-Vernal at 1.31 am on Wednesday. From them the sun should spend the more time in the southern hemisphere for the next 6 months.

Razor · Unread post by **Razor** » Tue 22/09/2020 09:13

Next weekend looks one to watch....

snowchaser01 · Unread post by **snowchaser01** » Tue 22/09/2020 09:27

Razor wrote: ↑Tue 22/09/2020 09:13 Next weekend looks one to watch....

Are you referring to this coming weekend?

Razor · Unread post by **Razor** » Tue 22/09/2020 10:11

snowchaser01 wrote: ↑Tue 22/09/2020 09:27
Razor wrote: ↑Tue 22/09/2020 09:13 Next weekend looks one to watch....
Are you referring to this coming weekend?

Yeah...

Richard · Unread post by **Richard** » Tue 22/09/2020 10:22

Yes this weekend system looks major at this stage, and quite a lot of spill over rainfall too.

Richard · Unread post by **Richard** » Tue 22/09/2020 10:42

Last weekends gales were bad enough, don't need another round as bad. Saw this today, a 80- 100 year old pine, amazing the power of the wind

IMG_20200922_103110.jpg

tornado · Unread post by **tornado** » Tue 22/09/2020 11:03

i see weatherwatch is calling this a weather bomb. hmm. auckland might get some nice rain from this system though.

snowchaser01 · Unread post by **snowchaser01** » Tue 22/09/2020 11:41

Razor wrote: ↑Tue 22/09/2020 10:11
snowchaser01 wrote: ↑Tue 22/09/2020 09:27

Are you referring to this coming weekend?
Yeah...

Yep, I agree, it looks concerning and major at this stage.

Bradley · Unread post by **Bradley** » Tue 22/09/2020 11:46

snowchaser01 wrote: ↑Tue 22/09/2020 11:41
Razor wrote: ↑Tue 22/09/2020 10:11
Yeah...
Yep, I agree, it looks concerning and major at this stage.

Nearly 100hpa difference between the low in the southern ocean and the huge high sitting over Australian/Tasman and NZ is stuck right in the squash zone - looks close to the winds from September 2013, maybe a touch less at this stage...

snowchaser01 · Unread post by **snowchaser01** » Tue 22/09/2020 11:58

Bradley wrote: ↑Tue 22/09/2020 11:46
snowchaser01 wrote: ↑Tue 22/09/2020 11:41

Yep, I agree, it looks concerning and major at this stage.
Nearly 100hpa difference between the low in the southern ocean and the huge high sitting over Australian/Tasman and NZ is stuck right in the squash zone - looks close to the winds from September 2013, maybe a touch less at this stage...

September 2013 was a horrific night, the worst winds I have ever experienced, even in Christchurch. WW now on about a drop from 984hpa to 962hpa between noon Saturday and noon Sunday and then down to 936hpa on Monday.... that's insane!

tornado · Unread post by **tornado** » Tue 22/09/2020 12:14

snowchaser01 wrote: ↑Tue 22/09/2020 11:58
Bradley wrote: ↑Tue 22/09/2020 11:46

Nearly 100hpa difference between the low in the southern ocean and the huge high sitting over Australian/Tasman and NZ is stuck right in the squash zone - looks close to the winds from September 2013, maybe a touch less at this stage...
September 2013 was a horrific night, the worst winds I have ever experienced, even in Christchurch. WW now on about a drop from 984hpa to 962hpa between noon Saturday and noon Sunday and then down to 936hpa on Monday.... that's insane!

yes saw that. intresting weekend coming up. for nz

Bradley · Unread post by **Bradley** » Tue 22/09/2020 12:16

snowchaser01 wrote: ↑Tue 22/09/2020 11:58
Bradley wrote: ↑Tue 22/09/2020 11:46

Nearly 100hpa difference between the low in the southern ocean and the huge high sitting over Australian/Tasman and NZ is stuck right in the squash zone - looks close to the winds from September 2013, maybe a touch less at this stage...
September 2013 was a horrific night, the worst winds I have ever experienced, even in Christchurch. WW now on about a drop from 984hpa to 962hpa between noon Saturday and noon Sunday and then down to 936hpa on Monday.... that's insane!

I remember that night well, I was living in Sheffield at the time - Chch airport had gusts of 133km, Mt Hutt had a 251kmh gust and Ashburton airport had 90kmh average windspeed for a few hours there...here is the chart from the August 75' wind storm - can't quite see why this synoptic setup would produce such bad winds?

snowchaser01 · Unread post by **snowchaser01** » Tue 22/09/2020 12:51

Bradley wrote: ↑Tue 22/09/2020 12:16
snowchaser01 wrote: ↑Tue 22/09/2020 11:58

September 2013 was a horrific night, the worst winds I have ever experienced, even in Christchurch. WW now on about a drop from 984hpa to 962hpa between noon Saturday and noon Sunday and then down to 936hpa on Monday.... that's insane!
I remember that night well, I was living in Sheffield at the time - Chch airport had gusts of 133km, Mt Hutt had a 251kmh gust and Ashburton airport had 90kmh average windspeed for a few hours there...here is the chart from the August 75' wind storm - can't quite see why this synoptic setup would produce such bad winds?

Yep I remember sitting it home and being genuinely concerned that the windows were gonna blow in. The entire concrete foundation house was moving, no power too... it was genuinely terrifying. That chart looks very similar to what is forecast for this weekend.

TonyT · Unread post by **TonyT** » Tue 22/09/2020 13:14

snowchaser01 wrote: ↑Tue 22/09/2020 11:58 a drop from 984hpa to 962hpa between noon Saturday and noon Sunday and then down to 936hpa on Monday.... that's insane!

No, thats a model with its knickers in a twist. Runaway feedback loop is more likely to be model craziness than atmospheric.

NZ Thunderstorm Soc · Tue 22/09/2020 13:59

Thanks to whoever corrected the spelling of the title of this topic.

Yes. I remember the September 2013 event quite well ,loosing 6, 50 years old pine trees on the border line to our back property in West Melton.
Thank goodness the trees blew into the neighbour's property so he had to clean up the mess. I did give him a hand though and got some firewood from it. Our chook-house ended upside down.
The "Big Blow" of 1975, I remember quite well in my train driving days.

tornado · Unread post by **tornado** » Tue 22/09/2020 14:46

wow
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image.png

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