General May Weather

David · Unread post by **David** » Sun 14/05/2017 07:29

I sometimes wonder about Metservice overnight low forecast, and how can it be so far off. Was obvious it would be colder than 9C.

Down to 3.3C here this morning, Airport looks to have dipped to 6C.

Manukau heads obs · Sun 14/05/2017 07:38

yes, with a 6c DP, that was going to be the overnight low

NZstorm · Unread post by **NZstorm** » Sun 14/05/2017 09:07

Grey Lynn 5C.

This time last year a decent run of thunderstorm days was about to commence. A grand total of 60,000 strikes occurred over 6 consecutive days up the west of the country 16th to 21st May 2016.

However 2017 looking quite stable so far. There is some weak instability showing up mid week (Wednesday/Thursday) but no indication currently of a big lightning show.

spwill · Unread post by **spwill** » Sun 14/05/2017 09:39

David wrote:I sometimes wonder about Metservice overnight low forecast, and how can it be so far off. Was obvious it would be colder than 9C.

Down to 3.3C here this morning, Airport looks to have dipped to 6C.

Clear skies, no wind, dp around 2 or 3C rural, the ingredients for a cold night this time of year

Orion · Unread post by **Orion** » Sun 14/05/2017 10:48

Frost followed by fog here this morning, a bit bleak!

Clearing to feeble sunshine now.

03Stormchaser · Unread post by **03Stormchaser** » Sun 14/05/2017 12:05

Orion wrote:Frost followed by fog here this morning, a bit bleak!
Clearing to feeble sunshine now.

Lovely autumn day in chc. SW change later in the week doesn't look unseasonal, but I'm sure it will be blasted all over the social media platforms.

Sent from my VIE-L09 using Tapatalk

NZstorm · Unread post by **NZstorm** » Sun 14/05/2017 19:56

Could be a good snowfall on the Queenstown Ski fields later in week but I guess its a bit early to be useful.

Nev · Unread post by **Nev** » Sun 14/05/2017 19:58

Sorry for being off-topic but, I was watching Country Calendar earlier about a Blueberry orchard in Waharoa, near Matamata and they mentioned being hit by a tornado on July 18, 2015, which caused quite a bit of damage, including tall, 300mm thick posts being snapped and sucked up. One more of quite a few other reported tornadoes that day in this thread.

Razor · Unread post by **Razor** » Sun 14/05/2017 21:13

Stunning day above Porters Pass today

spwill · Unread post by **spwill** » Mon 15/05/2017 07:55

NZstorm wrote:Could be a good snowfall on the Queenstown Ski fields later in week but I guess its a bit early to be useful.

I think they will be wanting snow now.

spwill · Unread post by **spwill** » Mon 15/05/2017 07:56

Razor wrote:Stunning day above Porters Pass today

Nice photos there.

Richard · Unread post by **Richard** » Mon 15/05/2017 17:29

Yes great shots Razor.

Dean. · Unread post by **Dean.** » Mon 15/05/2017 19:04

Razor wrote:Stunning day above Porters Pass today

Foggy Peak one of my favourite hikes

Thursday looks interesting for Canterbury

Razor · Unread post by **Razor** » Mon 15/05/2017 20:06

Thanks all. Last hit out that was before 30 odd hours on the feet around Hanmer Springs on Friday/ Saturday. Looks cold but hopefully most of the moisture out to sea by then!

Bradley · Unread post by **Bradley** » Tue 16/05/2017 08:17

EC has the snow level right down to around 300m in Canterbury on Friday for a time, with that low pressure system tracking further northward it will allow the cold air to penetrate further north then previously forecast

NZstorm · Unread post by **NZstorm** » Tue 16/05/2017 09:06

GFS is showing snow to 200m in Otago/Southland late Fri/early Saturday. Just model output at this stage though.

Looking like thunderstorms will try to form during Wednesday over western and upper North Island associated with incoming fronts, but the instability is a struggle by the looks.

Thunder081 · Unread post by **Thunder081** » Tue 16/05/2017 15:27

Awesome looking low!!

Manukau heads obs · Tue 16/05/2017 16:43

noice

Tornado Tim · Unread post by **Tornado Tim** » Tue 16/05/2017 17:48

Bit of mammatus coming through this afternoon in Raglan with the incoming Low.....

NZ Thunderstorm Soc · Tue 16/05/2017 18:48

Interesting cloud forms to the west over 'The Downs' here this afternoon. Wavy forms in the Ac cloud.

NZstorm · Unread post by **NZstorm** » Tue 16/05/2017 20:11

Wednesday evenings front over west of North Island looking a bit more unstable now with lapse rates of 6.8C and sfc dp 15C.

NZstorm · Unread post by **NZstorm** » Wed 17/05/2017 06:38

The polar blast at the end of the week now looking more significant for Southland/Otago with snow falling to sea level!

And heavy falls over the hills with latest gfs run. Gales as well! Late Friday into Saturday timeframe.

Forecast Sounding for Dunedin Saturday 3am.

geoff_184 · Unread post by **geoff_184** » Wed 17/05/2017 06:41

The MetService rain forecast charts are now showing significant snowfall to sea level over the ocean as well as land.

For anyone who doesn't know about them, the snow charts at snowforecast.com are the most detailed you'll find for NZ. Their only drawback is they only show it where precipitation is predicted, not where air conditions will be snow-favourable.

http://www.snow-forecast.com/maps/dynamic/nz

David · Unread post by **David** » Wed 17/05/2017 07:34

Was a wet & breezy night - 25mm recorded overnight in Howick.

Nev · Unread post by **Nev** » Wed 17/05/2017 08:26

Yeah, 23mm here overnight, and very blustery. I see Grey Lynn's up around 29mm.

Whangaparaoa's had 33mm so far, compared to 15mm at Akld Aero.
And further north, Kaikohe and Kerikeri Aero up around 55mm.

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