General January Weather

spwill · Unread post by **spwill** » Thu 08/01/2015 21:54

Cb cloud tops were visible from Auckland. Looks like it ended up a good evening for storms south of Hamilton.

Tornado Tim · Unread post by **Tornado Tim** » Thu 08/01/2015 22:10

spwill wrote:Cb cloud tops were visible from Auckland. Looks like it ended up a good evening for storms south of Hamilton.

Odd distant Rumble, but nothing significant storm wise (upper levels too warm), but getting a fantastic amount of rain though... nearing 40mm

NZstorm · Unread post by **NZstorm** » Thu 08/01/2015 22:16

40mm is a good drop Tim.

jamie · Unread post by **jamie** » Thu 08/01/2015 22:21

Heck 40mm!!!???? We are just over 10mm.

I'm amazed at how long lived this convection is. Doesn't look like letting up yet either. Classic Waikato summer stuff

Manukau heads obs · Thu 08/01/2015 22:30

About time we got the classic waikato CB,s

Richard · Unread post by **Richard** » Fri 09/01/2015 06:32

Cloud finally cleared overnight to give a cold start,3.2deg ,so should be large temp range today.

NZstorm · Unread post by **NZstorm** » Fri 09/01/2015 06:52

20 to 30mm+ over a wide area of the Waikato yesterday evening.

7pm sounding for southern Waikato GFS 06Z run.

jamie · Unread post by **jamie** » Fri 09/01/2015 07:26

24.2mm here. What was your total Tim? Probably 50?

jamie · Unread post by **jamie** » Fri 09/01/2015 07:26

Hmmm that sounding is much more unstable than previous ones.

Richard · Unread post by **Richard** » Fri 09/01/2015 07:27

Thats a good amount for you people

NZstorm · Unread post by **NZstorm** » Fri 09/01/2015 07:37

jamie wrote:Hmmm that sounding is much more unstable than previous ones.

Looking back, the modelling really started to point to storms on the morning 18Z run yesterday. Previous runs where very iffy.

David · Unread post by **David** » Fri 09/01/2015 07:37

A shame we couldn't get some of that rain up here!
Rather warm last night, 18.3C min.

Manukau heads obs · Fri 09/01/2015 08:00

It would have been the easterly surge that was part od the trigger..yes?

shovelopikis · Unread post by **shovelopikis** » Fri 09/01/2015 09:31

heavy rain for a few hours here last night until 11pm in south waikato, around 25mm

Manukau heads obs · Fri 09/01/2015 09:44

there is a stuff.co.nz headline that reads
relief as waikato doctor released
I actually thought that was about the rain, LOL

jamie · Unread post by **jamie** » Fri 09/01/2015 11:38

Well DairyNZ's research farms at Newstead had 90mm apparently. That's one heck of a drop!

Tornado Tim · Unread post by **Tornado Tim** » Fri 09/01/2015 11:39

jamie wrote:24.2mm here. What was your total Tim? Probably 50?

51.8mm, best lot of rain falling from Convection in quite a long time.
Regarding the easterly surge, i think it had component to play in the upper fields, the sfc wind however was NW to North so I think it must have kept the surge back over the central northern Waikato.

Generally when we have an easterly surge it pushes the convection way out west, as generally the west is allot weaker in these scenarios.

Tornado Tim · Unread post by **Tornado Tim** » Fri 09/01/2015 11:51

jamie wrote:Well DairyNZ's research farms at Newstead had 90mm apparently. That's one heck of a drop!

Yea the line was just to the west of me, Newstead in the perfect place.
The convection started flaring to west again mid evening, so I am not surprised that place got a high amount.

17.2mm at Hamilton Airport, I wonder what Ruakura got.

Nev · Unread post by **Nev** » Fri 09/01/2015 12:06

Ruakura managed 46.6mm in the 24 hrs to 9am this morn...

jamie · Unread post by **jamie** » Fri 09/01/2015 12:12

Jeez it would only be 2km (if that) as the crow fly between Ruakura and Newstead. Prime example of how hit and miss summer storms are.

NZstorm · Unread post by **NZstorm** » Fri 09/01/2015 12:17

Low level wind chart for 7pm last night. NW converging with a SE over southern Waikato.

NZstorm · Unread post by **NZstorm** » Fri 09/01/2015 12:23

and dewpoint chart for7pm showing quite a large moisture gradient between the NW and SE.

Tornado Tim · Unread post by **Tornado Tim** » Fri 09/01/2015 13:07

Showers redeveloping already..... A nice and steamy 19*C DP...

Richard · Unread post by **Richard** » Fri 09/01/2015 17:02

Warming up to 29deg,may not reach 30 today but should tomorrow.

ricky · Unread post by **ricky** » Fri 09/01/2015 17:46

NZstorm wrote:Low level wind chart for 7pm last night. NW converging with a SE over southern Waikato.

Yes the cool fresh SE was a big change where I was at lake Taupo, after the very warm lake breeze NW the previous evening.

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