General May Weather

Weather reports, prognostics, questions and discussion. Climate diagnostics, drivers, and outlooks. Weather stations and websites.
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Nev
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Re: General May Weather

Unread post by Nev »

spwill wrote: Sat 04/05/2024 10:52 Short term is certainly colder. Niwa warmer is for the next 3 months as a whole.

The temperature has not gone below 8C at Auckland airport or Greylynn so far this year, should happen next week.
NIWA's Outlook for the next 3 months as a whole is actually for 'average OR above average temps'. Bear in mind that NIWA's definition of 'average' is within plus or minus 0.5°C of normal, so even up to 0.5°C below normal would be deemed 'average'.

Maybe this little snippet from RNZ quoting NIWA's Ben Noll is what John heard on his old 'wireless'...?
'Goodbye El Niño: Where the weather is heading this winter' - RNZ

While May is expected to feature rounds of chilly, southerly quarter winds, Noll said there could be milder, westerly quarter winds from late in the month into June and July.

"It has been a fairly cool autumn so far, and that is going to continue into May," he said.

"As we go toward winter, there are signs that the temperatures actually could turn somewhat milder for the time of year as we go toward toward June and July because the winds may change direction.

"The average person might think that, 'Oh, it's been really kind of cold lately, it's going to be super cold this winter', and that might not necessarily be the case."
Edit: Amended my ' 0.5°C' typos.
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Re: General May Weather

Unread post by Simon Culling »

Hello Nev, do you mean 0.5°C rather than 5°C as NIWA's definition of the departure from average?
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Re: General May Weather

Unread post by Nev »

Simon Culling wrote: Sat 04/05/2024 12:57 Hello Nev, do you mean 0.5°C rather than 5°C as NIWA's definition of the departure from average?
Oops, yes... :o Have amended those typos... _b
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

A cloudy day today but a light frost this morning. Only 12.5C for today. Manly a calm day as well.
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

Another cloudy day although the sky tried to clear a bit around noon. 15.1C for today.
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Re: General May Weather

Unread post by mikestormchaser »

If the models are anything to go by Thursday could see record low may temperatures? Looking like a cold outbreak we would normally see in actual winter.
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Re: General May Weather

Unread post by spwill »

Temperatures will struggle to rise in the deep south today, yes even colder air mid week.

May is a month when low level snow can occur over the South Island and we can see frost in the Auckland region.
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Re: General May Weather

Unread post by darcyplumb »

Bitterly cold here today. Very close to frost and then the high cloud came over and stopped any hope of warmth from the sun. Brief sun appearance around 11.30am and now a southerly change is moving through. My thermometer hasn’t been above 8 degrees C all day. Quite early for this kind of cold and it looks to get colder later in the week.
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Re: General May Weather

Unread post by tich »

Heavy showers in Akaroa, with a little hail earlier.
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Re: General May Weather

Unread post by Orion »

I recall a very cold outbreak in May 1988, around the 20th. Cold enough in Ashburton to skittle plants in a shade-house. May have snowed? was memorably cold.

Sunny here at the moment, but some cloud about and cold strong winds.
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Re: General May Weather

Unread post by Nev »

Orion wrote: Mon 06/05/2024 13:48 I recall a very cold outbreak in May 1988, around the 20th. Cold enough in Ashburton to skittle plants in a shade-house. May have snowed? was memorably cold.
Yes, the Ashburton Domain recorded its lowest ever May temp of -6.7C on the 24th in 1988 from records since 1928. 0_o
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Re: General May Weather

Unread post by tich »

Orion wrote: Mon 06/05/2024 13:48 I recall a very cold outbreak in May 1988, around the 20th. Cold enough in Ashburton to skittle plants in a shade-house. May have snowed? was memorably cold.

Sunny here at the moment, but some cloud about and cold strong winds.
https://paperspast.natlib.govt.nz/newsp ... 80525.2.23

23 May 1988.
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Re: General May Weather

Unread post by Richard »

Started off here a lovely morning with a mild NW wind, winds turned cold southerly after midday
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Re: General May Weather

Unread post by Bradley »

Temps of -6C at 850hpa, cloud clearing late afternoon and winds dying off equals some record early May minimum temps on Friday morning IMO
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

Cloud cleared away overnight but remaining partly cloudy this morning before clearing away and becoming fine in this SW flow, when the southerly came through around lunch time. However clouding up during the afternoon and becoming partly cloudy this evening. 12.5C for today.
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Re: General May Weather

Unread post by Storm Struck »

Indeed a very cold week overall and certainly for May.
Wednesday night into Thursday will certainly be cold with those snow levels coming down to around 500m. Hopefully a better splash of rain/ hail this time.
Friday morning will be bitter though.

Next week we do a complete flip with a more high pressured westerly flow. So temperatures will go average to above.
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

Slight frosting this morning but with some cloud cover. Generally a fine day with occasional cloud moving NE in the above SW flow. Light NE.
Today's maximum was 13.5C. Fine evening with it becoming crunchy underfoot on the lawn.
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Re: General May Weather

Unread post by darcyplumb »

Gust front visible to my south.
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Re: General May Weather

Unread post by darcyplumb »

Trying to get a photo of the gust front but the iPhone 11 just doesn’t do it justice. One of the better gust fronts that I’ve seen in recent years. Big massive puffs of cloud at the top with the scud - like clouds scraping the ground at the bottom. Very cool.
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

Gust front through here at a quarter past four.
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Re: General May Weather

Unread post by darcyplumb »

darcyplumb wrote: Wed 08/05/2024 16:40 Trying to get a photo of the gust front but the iPhone 11 just doesn’t do it justice. One of the better gust fronts that I’ve seen in recent years. Big massive puffs of cloud at the top with the scud - like clouds scraping the ground at the bottom. Very cool.
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

Good one, DP.
Here is a photo of the gust front as it passed over Geraldine. Must of developed more as it travelled north from here.
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Re: General May Weather

Unread post by Storm Struck »

Southerly arrived around 6pm with some strong wind gusts and brief heavy rain. The front certainly raced up the plains, as around 5pm there was a faint cloud line to the south and within half an hour it was pretty much on the cities doorstep.
Those heavy showers blew up on the windchange with the assistance of Banks Peninsula.
Main rain band moving up the plains now.
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Re: General May Weather

Unread post by Razor »

Brief hail showers moving through here in Halswell at present
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Re: General May Weather

Unread post by NZ Thunderstorm Soc »

After a frost this morning, a blue dome day eventuated until mid afternoon when it started to cloud up from the south.
Gust front moved across at 4;15pm with a change to southerlies, strong for a time. Came onto rain later but only 1.8mm recorded here from this event.
Rain and wind easing this evening.
Cloud pictures of the front in the distance and cloud above in the skies prior to the arrival of the front.
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