Can only be good news for low level snow - now we need some really cold air and its on!!TonyT wrote:Some (but not all) models are predicting the MJO to return to a moderate phase 7 in about a weeks time, which is the phase which favours development of low pressure in the Tasman Sea and over NZ. Expect to see the models favouring troughs and depressions over and around New Zealand for a while around that time frame.SnwAddct wrote:Looking like a return to cold snowy weather next weekend
General July Weather
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.
For today's weather discussion head to: New Zealand Weather & Climate
These topics are a read-only archive and may be subject to out-of-date information.
For today's weather discussion head to: New Zealand Weather & Climate
-
- Posts: 1594
- Joined: Wed 01/05/2013 21:06
- Location: Christchurch
Re: General July Weather
-
- Posts: 10081
- Joined: Sun 29/06/2003 22:39
- Location: Mt Eden Auckland
Re: General July Weather
There is potential for a wintry system to affect NZ in about a weeks time, based on agreement by the GFS and ECMWF.
July for Auckland has been bright and cool with I think average rainfall although some locations have been wet while others have been drier.
July for Auckland has been bright and cool with I think average rainfall although some locations have been wet while others have been drier.
-
- Posts: 1594
- Joined: Wed 01/05/2013 21:06
- Location: Christchurch
Re: General July Weather
Both GFS and EC are in agreement with the snowline for next weekend which is quite rare this far out - about 200m asl at this stage
-
- Posts: 466
- Joined: Mon 27/05/2013 19:16
- Location: Inland mayfield 310asl
Re: General July Weather
I see Tony is already on to it with both the farmlands forecast and the fb pageBradley wrote:Both GFS and EC are in agreement with the snowline for next weekend which is quite rare this far out - about 200m asl at this stage
Auckland & Tauranga
-
- Posts: 4215
- Joined: Sun 08/08/2010 16:49
- Location: Ashburton, Mid-Canterbury, 110m asl.
Re: General July Weather
Let us hope that snow doesn't eventuate, for the sake of calves, lambs, stockmen and shepherds.
-
- Posts: 141
- Joined: Fri 10/04/2015 12:53
- Location: Gore
Re: General July Weather
starting calving down here from next weekend so hopefully it doesnt happen. although would be better now then around 3 weeks time when we will be at our busiest
-
- Posts: 4215
- Joined: Sun 08/08/2010 16:49
- Location: Ashburton, Mid-Canterbury, 110m asl.
Re: General July Weather
Underway in this area now.hozza95 wrote:starting calving down here from next weekend so hopefully it doesnt happen. although would be better now then around 3 weeks time when we will be at our busiest
-
- Posts: 337
- Joined: Sat 05/07/2008 10:36
- Location: Timaru, New Zealand. 13m asl
Re: General July Weather
been underway here for the last 2 weeks. At least 200 calves so far, started about a week ahead of schedule.
-
- Posts: 7636
- Joined: Sat 18/08/2007 21:02
- Location: Howick, Auckland
Re: General July Weather
Brief summary stats for Howick in July:
Avg temp = 10.2C
Avg daily max = 14.2C
Avg daily min = 6.5C
Highest temp = 17.2C (on the 7th)
Lowest temp = -1.4C (on the 12th)
Rainfall = 144 mm
Avg temp = 10.2C
Avg daily max = 14.2C
Avg daily min = 6.5C
Highest temp = 17.2C (on the 7th)
Lowest temp = -1.4C (on the 12th)
Rainfall = 144 mm
Last edited by David on Sat 01/08/2015 11:30, edited 1 time in total.
-
- Posts: 1249
- Joined: Fri 21/02/2003 13:11
- Location: Templeton, Christchurch
Re: General July Weather
My station's readings for the month:
Ave temp 6.7°C
Ave Minimum 2.4°C
Ave Maximum 12.3°C
Minimum -4.8°C on 12th (7 air frosts + 3 days <1°C)
Maximum 21.4°C on 26th
Rainfall 40mm from 11 days with 9.8mm on 11th, YTD 288.4mm
Like June, temp 0.5C above normal and a new record maximum.
Ave temp 6.7°C
Ave Minimum 2.4°C
Ave Maximum 12.3°C
Minimum -4.8°C on 12th (7 air frosts + 3 days <1°C)
Maximum 21.4°C on 26th
Rainfall 40mm from 11 days with 9.8mm on 11th, YTD 288.4mm
Like June, temp 0.5C above normal and a new record maximum.
-
- Posts: 12305
- Joined: Mon 10/03/2003 16:30
- Location: West Coast Road, Manukau Peninsula, North Island
-
- Moderator
- Posts: 6332
- Joined: Tue 07/03/2006 15:24
- Location: Waiheke Island, Hauraki Gulf
Re: General July Weather
A cool start to July for most areas kept overall temps in the top two-thirds of NZ down a little. However, apart from the NW, most of the South Island experienced exceptionally warm temps in the latter half. It was also quite dry in eastern areas of the South Island, particularly in the SE. It was also a relatively very sunny month for almost the entire country.
Some very preliminary July 2015 figures for the main centres:
Note that the Auckland figures include a fairly localised downpour on the 15th, with 50mm falling in two hours at Akld Aero.
Some very preliminary July 2015 figures for the main centres:
Code: Select all
July 2015 Average Temps, Rainfall and departures from their 1981-2010 normals ℅ NIWA
Site T-max °C T-min °C T-mean °C Rainfall mm
Auckland, Mangere 14.5 0.0 7.4 +0.1 11.0 +0.1 168 122%
Auckland Aero 14.1 -0.2 7.3 -0.2 10.7 -0.2 190 143%
Tauranga Aero 14.1 -0.4 5.6 -0.5 9.8 -0.5 91 71%
Hamilton Aero 13.4 -0.4 3.2 -0.4 8.3 -0.4 127 98%
Hamilton, Ruakura 14.0 +0.2 4.0 0.0 9.0 +0.1 109 92%
Wellington, Kelburn 11.6 +0.2 6.3 0.0 8.9 0.0 142 104%
Christchurch Aero 11.5 +0.6 0.4 -0.2 5.9 +0.1 49 76%
Dunedin, Musselburgh 10.2 +0.2 2.9 -0.2 6.5 0.0 25 44%
Greymouth Aero 11.0 -1.1 3.3 -0.8 7.2 -0.9 206 104%
You do not have the required permissions to view the files attached to this post.
-
- Posts: 239
- Joined: Mon 03/06/2013 09:37
- Location: Taranaki
Re: General July Weather
Summary for July 2015
Mean (1 minute) 6.3
Mean Minimum 1.5
Mean Maximum 15.2
Minimum -3.6
Maximum 22.6
Highest Minimum 9.4
Lowest Maximum 8.9
Air frosts 16
Rainfall (mm): 144.3
Mean (1 minute) 6.3
Mean Minimum 1.5
Mean Maximum 15.2
Minimum -3.6
Maximum 22.6
Highest Minimum 9.4
Lowest Maximum 8.9
Air frosts 16
Rainfall (mm): 144.3
-
- Posts: 12305
- Joined: Mon 10/03/2003 16:30
- Location: West Coast Road, Manukau Peninsula, North Island
-
- Posts: 239
- Joined: Mon 03/06/2013 09:37
- Location: Taranaki
-
- Posts: 401
- Joined: Sun 12/02/2012 10:21
- Location: Rolleston, Canterbury
Re: General July Weather
Reefton Summary for July 2015
Temperature (°C):
Mean (1 minute) 4.2
Mean (min+max) 5.7
Mean Minimum 0.0
Mean Maximum 11.3
Minimum -6.2 day 13
Maximum 15.6 day 24
Highest Minimum 6.9 day 15
Lowest Maximum 5.3 day 18
Air frosts 16
Rainfall (mm):
Total for month 191.8
Wettest day 56.5 day 15
High rain rate 31.2 day 15
Rain days 17
Dry days 14
Wind (km/h):
Highest Gust 31.3 day 26
Average Speed 1.1
Wind Run 837.0 km
Gale days 0
Pressure (hPa):
Maximum 1035.2 day 23
Minimum 987.4 day 18
A cold month overall. Lowest average min and mean (1-min) temps recorded.
Temperature (°C):
Mean (1 minute) 4.2
Mean (min+max) 5.7
Mean Minimum 0.0
Mean Maximum 11.3
Minimum -6.2 day 13
Maximum 15.6 day 24
Highest Minimum 6.9 day 15
Lowest Maximum 5.3 day 18
Air frosts 16
Rainfall (mm):
Total for month 191.8
Wettest day 56.5 day 15
High rain rate 31.2 day 15
Rain days 17
Dry days 14
Wind (km/h):
Highest Gust 31.3 day 26
Average Speed 1.1
Wind Run 837.0 km
Gale days 0
Pressure (hPa):
Maximum 1035.2 day 23
Minimum 987.4 day 18
A cold month overall. Lowest average min and mean (1-min) temps recorded.
-
- Posts: 18913
- Joined: Wed 12/03/2003 22:08
- Location: Raukapuka Geraldine
Re: General July Weather
My station's readings for the month:
Ave temp 8.8°C
Ave Minimum 0.7°C
Ave Maximum 10.9°C
Minimum -6.5°C on 12th
Maximum 19.2°C on 26th
Rainfall 48.5mm from 11 days with 21.5mm on 11th, YTD 327.9mm
Ave temp 8.8°C
Ave Minimum 0.7°C
Ave Maximum 10.9°C
Minimum -6.5°C on 12th
Maximum 19.2°C on 26th
Rainfall 48.5mm from 11 days with 21.5mm on 11th, YTD 327.9mm
JohnGaul
NZThS
NZThS
-
- Moderator
- Posts: 6332
- Joined: Tue 07/03/2006 15:24
- Location: Waiheke Island, Hauraki Gulf
Re: General July Weather
Here's NIWA's preliminary, 'July 2015 National Climate Summary'.
A dry month for many parts of the country.
The national average temp of 7.8C was equal to its 1981-2010 normal.
The month's highest temp of 21.2C was recorded at Christchurch (Riccarton) on the 26th, and the lowest of -10.2C was recorded at Hanmer Forest on the 12th.
A dry month for many parts of the country.
The national average temp of 7.8C was equal to its 1981-2010 normal.
The month's highest temp of 21.2C was recorded at Christchurch (Riccarton) on the 26th, and the lowest of -10.2C was recorded at Hanmer Forest on the 12th.
-
- Posts: 18913
- Joined: Wed 12/03/2003 22:08
- Location: Raukapuka Geraldine
Re: General July Weather
Immm back to Riccarton again, which in my books is not an established weather recording site even though run by NIWAR.
JohnGaul
NZThS
NZThS
-
- Moderator
- Posts: 4431
- Joined: Tue 09/12/2003 12:11
- Location: Prebbleton
Re: General July Weather
Permanently in Riccarton?NZ Thunderstorm Soc wrote:Immm back to Riccarton again, which in my books is not an established weather recording site even though run by NIWAR.
NZ Largest Storm Chasing Facebook Pagehttp://www.facebook.com/nzstormchasers
NZ Largest Storm Chase Community https://www.facebook.com/groups/NZStormchasersGroup
NZ Stormchasers TV https://www.youtube.com/@NZStormchasers
NZ Largest Storm Chase Community https://www.facebook.com/groups/NZStormchasersGroup
NZ Stormchasers TV https://www.youtube.com/@NZStormchasers
-
- Posts: 3745
- Joined: Sat 24/01/2004 16:56
- Location: Wellington
Re: General July Weather
It's time they checked their records more accurately. Blenheim's 199 hours was nowhere near its July record. The record (also a NZ July record, with over 84% of the recordable amount) was 231 hours in 1952 - Nelson was close with 227 hours in the same month.Nev wrote:Here's NIWA's preliminary, 'July 2015 National Climate Summary'.
A dry month for many parts of the country.
The national average temp of 7.8C was equal to its 1981-2010 normal.
The month's highest temp of 21.2C was recorded at Christchurch (Riccarton) on the 26th, and the lowest of -10.2C was recorded at Hanmer Forest on the 12th.
-
- Posts: 3510
- Joined: Sat 15/03/2003 18:32
- Location: Christchurch (St Albans)/Akaroa
Re: General July Weather
How long have they been calculating the monthly mean temperature from the "seven station temperature series"? I wonder if the monthly average would be difference if taken from a wider range of stations throughout NZ.
-
- Posts: 3745
- Joined: Sat 24/01/2004 16:56
- Location: Wellington
Re: General July Weather
The current set starts at 1909. As far as variations from the "mean" go, obviously it would be nice to have a larger set, but my understanding is that the fluctuations derived from a larger set of stations over a shorter time span are not radically different from what the 7SS indicates ...tich wrote:How long have they been calculating the monthly mean temperature from the "seven station temperature series"? I wonder if the monthly average would be difference if taken from a wider range of stations throughout NZ.