Extreme heat Eastern SI 21 December 2015

TonyT · Unread post by **TonyT** » Mon 21/12/2015 16:41

Razor wrote:See my note above re the easterly today, it was noticeably cooler in town compared to Rolleston, which like the airport has been far enough inland to avoid the sea breeze today. A notably hot NW breeze out there. The NW has not made to the CBD town today, must have been right on the boundary. I note its struggled to reach even 20 at New Brighton today. Quite a remarkable differential

Thank you for that clarification, which explains why the Botanic Gardens didn't get as high as the airport.

moylanr · Unread post by **moylanr** » Mon 21/12/2015 16:50

TonyT wrote:
Razor wrote:See my note above re the easterly today, it was noticeably cooler in town compared to Rolleston, which like the airport has been far enough inland to avoid the sea breeze today. A notably hot NW breeze out there. The NW has not made to the CBD town today, must have been right on the boundary. I note its struggled to reach even 20 at New Brighton today. Quite a remarkable differential
Thank you for that clarification, which explains why the Botanic Gardens didn't get as high as the airport.

It popped back up to 31.6C at 4:40pm in the Gardens:

Razor · Unread post by **Razor** » Mon 21/12/2015 17:00

This is roughly how the trend has looked all afternoon (temps as at 4:45pm)

jamie · Unread post by **jamie** » Mon 21/12/2015 17:05

Razor wrote:See my note above re the easterly today, it was noticeably cooler in town compared to Rolleston, which like the airport has been far enough inland to avoid the sea breeze today. A notably hot NW breeze out there. The NW has not made to the CBD town today, must have been right on the boundary. I note its struggled to reach even 20 at New Brighton today. Quite a remarkable differential

That difference is very common in Sydney between western Sydney and costal Sydney. Can often be 35 out west and 22 on the cost.

NZ Thunderstorm Soc · Mon 21/12/2015 17:22

Anyone heard from Riccarton?

Captain Salty · Unread post by **Captain Salty** » Mon 21/12/2015 18:28

Did Kaikoura get to 29 as TV1 claimed? Looks more like 22 on metservice.

Dean. · Unread post by **Dean.** » Mon 21/12/2015 18:30

Captain Salty wrote:Did Kaikoura get to 29 as TV1 claimed? Looks more like 22 on metservice.

Probably recorded at the airport,about as accurate as Timaru city's (airport) recording.

03Stormchaser · Unread post by **03Stormchaser** » Mon 21/12/2015 19:24

Great reporting by Stuff today

dogmelon · Unread post by **dogmelon** » Mon 21/12/2015 19:51

Its been hot in Hornby. The air was warm even early in the morning so we must be inside the warm nw part of the city.

trickytiger · Unread post by **trickytiger** » Mon 21/12/2015 22:54

maximum for today in Rangitata was 36.4deg, way too hot

Storm Struck · Unread post by **Storm Struck** » Mon 21/12/2015 23:07

To me a good indicator if the temperature was around 39c to 40C, is tar melting on the roads or atleast the smell of it which i didnt see today even in Rolleston.
36C to 37C sounds about right id say, interesting the temperatures hovered around 32C until 3:30pm in Hornby when it shot up to 36C so the fohn affect really dragging those heat pockets around.
Back to a more easy comfortable temperature tomorrow, currently 24c as of 11pm.

03Stormchaser · Unread post by **03Stormchaser** » Mon 21/12/2015 23:19

Having experienced different heats around the world, I find today's to be very comfortable. Dewpoint below 15c, humidity between 30-40%. Tbh I wish this was the norm...

Bradley · Unread post by **Bradley** » Tue 22/12/2015 07:27

Yep no more then 36-37C yesterday, a friend who has his own weather station with a proper Stevenson screen just outside of Rangiora told me it maxed out at 36.7C...

moylanr · Unread post by **moylanr** » Tue 22/12/2015 08:32

Botanic Gardens eventually reached 33.3C at 5:30pm:

NZ Thunderstorm Soc · Tue 22/12/2015 19:48

Storm Struck wrote:To me a good indicator if the temperature was around 39c to 40C, is tar melting on the roads or atleast the smell of it which i didnt see today even in Rolleston.

You should of seen WeedonsRoss road yesterday. The tar was really melting on the road and when I drove up my shingly drive it was rather noisy in my truck from the stones stuck to my tyres

Nev · Unread post by **Nev** » Thu 24/12/2015 10:35

Below are some temps from NIWA and MS, with Leeston taking top-spot.

Note that Chch Aero's revised 36.0C is still warmer than the Lincoln, Riccarton or Gardens sites (the latter to be confirmed), whereas Timaru, Dunedin and Oamaru city/towns were warmer than the airports.
Also note that Ashburton Aero would be its 2nd highest Dec temp if the nearby longterm township's records were included (this month's township figures pending...).

Code: Select all

December 21, 2015 Max-temps       (°C)     Began     Comments 

Leeston Wastewater                36.4      2009     Highest
Rangiora (NIWA)                   36.2      1971     Highest 
Cheviot (NIWA)                    36.1      1982     Highest*
Christchurch Aero (MS)            36.0      1953     Highest  
Christchurch, Riccarton (NIWA)    35.4      2002     Highest 
Ashburton Aero (MS)               35.3      2006     Highest 
Lincoln (NIWA)                    35.0      1880     2nd highest 
Akaroa (NIWA)                     35.0      1994     Highest 
Dunedin City (MS)                 34.6      2006     Highest
Dunedin, Musselburgh (NIWA)       34.5      1947     Highest 
Timaru Gardens (NIWA)             34.3      1907     Equal highest 
Timaru Aero (MS)                  34.1      1971     Highest 
Oamaru (NIWA)                     33.6      2015
Christchurch Gardens              33.3*     1863     4th equal highest
Dunedin Aero (MS)                 33.1      1971     Highest 
Oamaru (MS)                       32.7      2005     Highest  
Oamaru Aero (MS)                  31.9      1971     Highest 

(* Cheviot - no data for 1996-2006)

moylanr · Unread post by **moylanr** » Thu 24/12/2015 14:49

What led to the revision please?: "Chch Aero's revised 36.0C"

Thanks Nev.

Nev · Unread post by **Nev** » Thu 24/12/2015 16:03

MS's website and NIWA's Cliflo data both showed 36.0C for Chch Aero, rather than the 36.1C initially reported. Possibly just a rounding issue if it's not quite 0.05 of a degree?

shovelopikis · Unread post by **shovelopikis** » Tue 29/12/2015 19:13

Do MS issue heat warnings...I'm sure met office do in the UK.

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