Frosts 2021

[Richard]

First one for the year this morning though only light , 0.7 deg. The warming thread has seen the end of the March hard frosts which use to every year see the end of the summer garden, nowadays its April.

[Orion]

Frosty here this morning, -0.6°C at present and lawn looking white.

[Razor]

First frost of the year for us here in ChCh, seems quite late in the piece!

[NZ Thunderstorm Soc]

First white frost evident on the ground even though light..
Down to zero.

[jamie]

Even we had ice in the grass this morning.


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[cbm]

Min 1.8 on 2nd and 0.5 today on the third. Ice on a neighbour's black tile roof only. No affect on plant life noticeable.

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[NZ Thunderstorm Soc]

Light frost here this morning, down to zero.

[Dean.]

A big enough frost to chill the toes at stunning Hanmer Springs this morning!

[NZ Thunderstorm Soc]

Zero again this morning with frosting in exposed areas.

[NZ Thunderstorm Soc]

First proper frost of the year this morning. White and down to minus 2.3C

[cbm]

First negative of the year, -0.1C

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[NZ Thunderstorm Soc]

Frosty again this morning, down to minus 2.7C.

[talbotmj15]

-3.5 in Burnthill oxford this morning. -6.3 fairle and -7 in Middlemarch. FYI for records.

[Nev]

NIWA's Middlemarch site recorded -8.1C this morning (and -6.8C yesterday morning).

[NZ Thunderstorm Soc]

Frost in Geraldine this morning, down to minus 0.4C.

[NZ Thunderstorm Soc]

Back home in Geraldine. Frost here this morning, down to minus 1.1C.

[Orion]

Observed it to be -1.8°C around 4:30am this morning, then temp rose, now +2.6°C; lawn was white.

[Razor]

Stayed above freezing here in Halswell, enough NE breeze to keep the minimum to +1.0

[Bradley]

Recorded -3.4C in West Melton this morning, seems that area around the airport was the sweet spot this morning...

[NZ Thunderstorm Soc]

Good frost this morning, down to minus 5.7C. Patches of frost this around this afternoon.

[Simon Culling]

NIWA report lows of -9.2°C at Ranfurly and -8.8°C at Middlemarch for the morning of 26th May 2021. MetService report similar lows with -8.2°C at Tekapo and -7.1°C at Dunedin Airport. The latter compares to a quoted figure of +6.8°C at nearby Swampy Summit at 700m+ amsl. Quite an inversion.

https://twitter.com/NiwaWeather/status/ ... 3003772929

https://twitter.com/MetService/status/1 ... 6052226049

Good cold start to early winter for NZ.

[Nev]

NIWA report lows of -9.2°C at Ranfurly and -8.8°C at Middlemarch for the morning of 26th May 2021. MetService report similar lows with -8.2°C at Tekapo and -7.1°C at Dunedin Airport. The latter compares to a quoted figure of +6.8°C at nearby Swampy Summit at 700m+ amsl. Quite an inversion.

https://twitter.com/NiwaWeather/status/ ... 3003772929

https://twitter.com/MetService/status/1 ... 6052226049

Good cold start to early winter for NZ.

Note that quite a few of the above lows were just preliminary. Below are yesterday's absolute T-mins (no MS data for Tekapo):

NIWA (°C)
-9.9 .. Middlemarch
-9.3 .. Ranfurly
-7.8 .. Lauder
-7.7 .. Clyde

MetService (°C)
-8.6 .. Tara Hills (Omarama)
-7.8 .. Timaru Aero
-7.5 .. Twizel (Pukaki Aero)
-7.1 .. Dunedin Aero
-6.8 .. Alexandra Aero
-6.5 .. Mt Cook Aero

Also worth noting that Richard's NIWA site (Medbury) got down to -6.7C yesterday.

[Nev]

Noticed MS's Tara Hills, Omarama site down to at least -10.8C this morning (its previous May record was -10.2C in 1986 from records since 1950), and Dunedin Aero down to at least -8.8C (at least equalling its 1988 May record from records since 1963).

[spwill]

Yes, a solid frost for the Dunedin area, Mosgiel down to -8.3, Waitati -4C

Twizel with a high of only 0C yesterday under that low level cloud layer they can sometimes get with frosty weather.

[Nev]

Dunedin Aero's -8.8C this morning confirmed, which also equals its all-time record (shared with May 1988 and July 2007).
https://twitter.com/MetService/status/1 ... 9862600704

Also -10.1C at Middlemarch this morning.
https://twitter.com/NiwaWeather/status/ ... 2068912132