Unstable Southern Tasman Low, 12th to 16th May

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Tornado Tim
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Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Looks like the SW of the South Island is getting hit by embedded storms atm on the occluded front and a very unsettled and unstable period is coming up.

Model guidance suggests that an area of very cold area aloft will be moving north to northeast on track with the low. The frontal features for the North Island seem to Greet the Western areas by Sunday afternoon it seems. Metservice has already issued a Severe Weather Warning for the Taranaki area due to high rain rates and a potential of large accumulation of rain.
Metservice wrote:Periods of heavy rain are expected for Taranaki from Sunday afternoon
through to Monday evening, accompanied by squally thunderstorms. In
the 33 hours from midday Sunday to 9pm Monday expect 120 to 180mm of
rain about and north of the Mountain, however expect 250 to 350mm of
rain on higher slopes of Mt Taranaki. Peak intensities of 25 to
35mm/hr in thunderstorms during Monday.
Also Severe Weather Watches have been issued for a western areas of both Islands.

Thunderstorms in the Tasman have been continuously going overnight and look to be quite squally and orientated in a line the last few Sat pictures.

Will certainly be an interesting/if yet exciting period of weather coming up :D
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Manukau heads obs »

I have been picking up those mid tasman strikes here....at first I thought they were the shower line that moved onto us until I checked out the sat image...the Boltec was plotting them too close
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Dale »

Thunderstorms for the last hour on the West Coast here.. looks like the good stuff is happening!
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by NZstorm »

Fingers crossed we could possibly catch thunder in Auckland later tomorrow.

The set up looks like a typical winter tornado set up, so if there is enough veering of the surface winds, isolated tornadoes would be possible.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by NZstorm »

Can see a cb to the south of here, over the Waikato
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Scattered glaciated CB's around, no thunder. Mild but cool feeling 16-17°C atm with NNW wind.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by spwill »

The showers are south of here but there is a lot of small towering Cu around .
There is a lot of Thunderstorm activity in the Tasman currently , how will that hold up as it comes east toward us ?.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Just had a heavy shower come through, 3.6mm from it :)
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Strong cumulus fists going up....
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Temps getting fairly warm for this time of year, the NW is certainly helping it. Around 18-20°C atm. Crisp Tcu going up to the east just need a little more development.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Thunder »

Nice pic Tim, gotta love storms! Hopefully some good storms come through for you guys!

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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

The cold front looks quite vigorous on the Auckland radar, could be one stormy night tonight :D

I doubt I will get much sleep if storms are around.....
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by David »

Turned out to be a reasonable day here, dry conditions most of the day, max 20°C. Looking forward to seeing what eventuates tomorrow afternoon/evening :)
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Can see some lightning in the distance to the SW, nice :)
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Manukau heads obs »

getting lots of strikes showng up to my NW on my boltec :)
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by NZstorm »

I had a quick look and saw a distant flash in the west.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by spwill »

Certainly looks very active out over the Tasman Sea tonight.

A mild evening here 16C, dp14c.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Flashing every half a minute or so to the west....
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by CHCH Weather Chaser »

Man that area of the NI is coping it big time in a very intense narrow band of rain that is not letting up anytime soon! Pitty there is no local weather station in the area to see how much rain is actually falling!!
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Kawhia seems to be getting a good storm atm on the front, the lightning from it I can see from here, the +CG's from it are very bright.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by spwill »

looks like the Kawhia area has had heavy showers/thunderstorms all night.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Tornado Tim »

Yes that front has hardly inched towards land anymore than it did last night....
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by NZstorm »

I woke up at 3am and had a look south and could see flickers of lightning about every 10 seconds.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Nev »

About 75mm just since midnight in Taranaki and Waitomo areas, according to this report.
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Re: Unstable Southern Tasman Low, 12th to 16th May

Unread post by Manukau heads obs »

The CB's to my west are lightning active according to my boltec :)
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