Longwave trough and cold surge July 12th-21st

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Chris W
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Chris W »

Beautiful norwest arch developed this afternoon as I was walking down Mt Herbert. Windy on top. Some amazing crepuscular rays at the leading edge of the cloud forward of the arch.

Looking good for a snow for the South Island ski fields on Monday.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

metservice has a strong wind watch in auckland for tommorow
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

lightning active out at sea to the west again. tommorow we may see another tornado from taranaki
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Chris W »

Moderate risk of thunderstorms this afternoon from about Oamaru to Chch along the coast, high risks for the coast and Waikato all the way down to Kapiti coast as the cold uppers make their presence felt together with the southwest change.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

heavy rain for Auckland will be from mid day. moderate risk thunderstorms are from evening through to night
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Re: Longwave trough and cold surge July 12th-18th

Unread post by KiwiWeather »

Here are a few pics from our latest satellite capture from NOAA 15 at 0650 this morning. Unfortunately there was a lot of noise and we only managed to get the top of the north island. And also an attractive plunge line from our wx station.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by ScottyD »

Waiting patiently this morning for any thunderstorms in Auckland. Meanwhile the old man in Porirua just had the front pass over with some good rumbles of thunder. 15mm in 10 minutes.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

scottiedavies wrote: Sun 14/07/2019 09:52 Waiting patiently this morning for any thunderstorms in Auckland. Meanwhile the old man in Porirua just had the front pass over with some good rumbles of thunder. 15mm in 10 minutes.
we could have some thunderstorms tonight. as cold air comes in after the front comes in. either late this afternoon,this evening or tonight
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Re: Longwave trough and cold surge July 12th-18th

Unread post by RODALCO »

2019-07-14_10-42-46.jpg
Very heavy rain in Titirangi, since the last 20 minutes or so.
Rain radar only shows light blue.
Near the 90 miles beach is a lot of red on the radar.
timestamp 10:28
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Re: Longwave trough and cold surge July 12th-18th

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raining now. thunderstorms for auckland start late this after noon
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

front has passed. chance for thunderstorms this afternoon through till tonight. as lightning is starting up again
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Re: Longwave trough and cold surge July 12th-18th

Unread post by spwill »

Active Cbs in the Tasman, hopefully some thunder here later, south of Auckland looks better placed for thunderstorms.
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Re: Longwave trough and cold surge July 12th-18th

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spwill wrote: Sun 14/07/2019 14:39 Active Cbs in the Tasman, hopefully some thunder here later, south of Auckland looks better placed for thunderstorms.
maybe hail too?
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Cyclone Tracy »

Isolated CG's coming off some Tasman clusters west and NW of Auckland in the last hour.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

yeah maybe we might catch a thunderstorm.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by spwill »

North Shore looks more in line for the next crop of Cbs, possible thunder.
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Re: Longwave trough and cold surge July 12th-18th

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i just saw lightning
Chris W
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Chris W »

Looks largely a fizzer for Canterbury, possibly the southerly change is later than expected. Though we did have one of those a couple of winters ago that resulted in a spectacular morning storm. Right now, light drizzle \:D/
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Re: Longwave trough and cold surge July 12th-18th

Unread post by spwill »

tornado wrote: Sun 14/07/2019 20:05 i just saw lightning
Just a small amount of distant lightning in the anvil tops out to sea, visible due to it being a clear night.
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Storm Struck »

There was a weak CB between Rangitata and Hinds this afternoon, also the hot spot of Oamaru not sure if it was active though.
I am currently living in Nelson doing a course, its quite amazing how abrupt the weather is here.
We had heavy showers last night before the main band and a few rumbles of thunder over the ranges, but certainly more rain from fridays front than this one.
Another round tomorrow night.
Canterbury, home of good rugby and severe storms
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Re: Longwave trough and cold surge July 12th-18th

Unread post by NZ Thunderstorm Soc »

Yes very weak but then thelow cloud moved over and buggered everytging up.
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Re: Longwave trough and cold surge July 12th-18th

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Im still up and just heard thunder
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Cyclone Tracy »

17mm so far for the frontal sequence, still no thunder heard in this part of the world. System no.3 looking quite active for tomorrow. Most models have system no.4's surface low cutting off from the westerly belt around the North Island on Thursday.... watching that one closely :smile:
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Re: Longwave trough and cold surge July 12th-18th

Unread post by tornado »

Cyclone Tracy wrote: Mon 15/07/2019 07:31 17mm so far for the frontal sequence, still no thunder heard in this part of the world. System no.3 looking quite active for tomorrow. Most models have system no.4's surface low cutting off from the westerly belt around the North Island on Thursday.... watching that one closely :smile:
yeah. i reakon fridays front was more better. I did see lightning on friday
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Re: Longwave trough and cold surge July 12th-18th

Unread post by Rogue »

There was a stunning looking thunderstorm to the south of Wellington this morning that I saw as I was driving to work. Just checked the good Lyall Bay webcam and you can see it sparking up before the sun comes up. Would have been great to photograph had I known!

https://www.youtube.com/watch?v=TiH7_P0EOLc
dawn.jpg
sunrise.jpg
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