General December Weather

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Awhituobs
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Re: General December Weather

Unread post by Awhituobs »

https://www.weather-display.com/windy/g ... 22021.html
2.3c above normal here...woa
An exceptionally warm December overall rounded off what is likely to be NZ's warmest year on record.
and yet people here on this forum 1 year ago predicted it was going to be the coldest year in decades
which I poured cold water on at the time haha
:)
mikestormchaser
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Re: General December Weather

Unread post by mikestormchaser »

NZ Thunderstorm Soc wrote: Fri 31/12/2021 18:47
mikestormchaser wrote: Fri 31/12/2021 14:26 Storms that fired yesterday were pretty much in the vicinity of where we thought it would happen. Despite the odd small cell further north. The thing lacking yesterday was the cold air. -20 wasnt an overly cold air mass at 500mb
Did you go and chase? You would of had to go way past Timaru for any action. Haven't heard of any reports of hail damage from the 2 warnings that MS issued yesterday afternoon so it couldn't of been all that severe. :-k
The clouds that developed at the wind change looked good here but that was that. :(
Yes we went south of st Andrews and got the storms down there. But sadly quite messy.
Mike
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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Stats for here for December:

min - 7.9C (Monday the 6th)
max - 30C (Wednesday the 22nd)
Highest minimum - 16.2 (Saturday the 4th)
Lowest maximum - 12.8C (Monday the 6th)
total PPT for the month was 148.4mm over 19 days.

for 2021:
Highest temperature was 38.7C (26 Jan)
Lowest temperature - Minus 5.6C (12/14th July)
986.1mm of rain over 156 days.
JohnGaul
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Simon Culling
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Re: General December Weather

Unread post by Simon Culling »

Hello John. Your annual total for Geraldine for 2021 is very high at 986mm? Looking at annual averages for Geraldine and Christchurch gives figures in the 500-600mm range. Was 2021 very wet?
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Nev
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Re: General December Weather

Unread post by Nev »

NIWA has confirmed today that 2021 was indeed NZ's warmest year on record.

Annual average temp was 13.56C, or 0.11C warmer than 2016, our previous record.

NIWA 7SS annual average temps to 1909-2021.png
https://niwa.co.nz/climate/summaries/an ... mmary-2021
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NZ Thunderstorm Soc
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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Simon Culling wrote: Mon 10/01/2022 23:31 Hello John. Your annual total for Geraldine for 2021 is very high at 986mm? Looking at annual averages for Geraldine and Christchurch gives figures in the 500-600mm range. Was 2021 very wet?
Yes. Simon. It was a very wet year with our street flooded 3 times. The end of May was significantly wet with 272.1mm of rain over 4 days.
2018 was a wetter year with 1219.4mm falling. Av here is 879.7mm from my recordings in my Nylex '1000' Professional rain gauge whilst I've been here.
Timaru Airport for 2021 only recorded 525mm of rain. Sometimes I question that gauge as I've gone past the airport when it is raining and nothing comes up on the rain-gauge and one day in blue-dome cloudless conditions, it recorded 5mm?
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Re: General December Weather

Unread post by snowstormwatcher »

Simon Culling wrote: Mon 10/01/2022 23:31 Hello John. Your annual total for Geraldine for 2021 is very high at 986mm? Looking at annual averages for Geraldine and Christchurch gives figures in the 500-600mm range. Was 2021 very wet?

500-600mm would be a dry year in Geraldine, the average would be closer to 750-800mm, Geraldine is quite close to the hills and picks up a bit of Orographic rain/drizzle during onshore Easterly and southerly wind directions while areas close to the coast like Timaru often remain dry.
Chris Raine
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Re: General December Weather

Unread post by Chris Raine »

And I got 1091.8 mm for 2021 not much above you John at Geraldine
Simon Culling
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Re: General December Weather

Unread post by Simon Culling »

Thanks for your replies, Gentlemen. The averages I found were not from a meteorological source, so obviously not very accurate.

From following John's daily notes, Geraldine seems to get quite a few days with relatively small amounts of drizzly rain (say 1-5mm) and this is very similar to here in the SW of the UK. On these days, the precipitation is coming from low level clouds rather than the normal higher elevations associated with frontal rain - and is often not well picked up by the rain radar. Would this be true for inland Canterbury towards the foothills?
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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Simon Culling wrote: Tue 11/01/2022 23:09 Thanks for your replies, Gentlemen. The averages I found were not from a meteorological source, so obviously not very accurate.

From following John's daily notes, Geraldine seems to get quite a few days with relatively small amounts of drizzly rain (say 1-5mm) and this is very similar to here in the SW of the UK. On these days, the precipitation is coming from low level clouds rather than the normal higher elevations associated with frontal rain - and is often not well picked up by the rain radar. Would this be true for inland Canterbury towards the foothills?
Yes. Simon. Yesterday was a good example of that.
JohnGaul
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