General August weather

[NZstorm]

If you look at the 1000-700mb thickness, there is some cold air going up the east of the country Thursday. Low topped wintery showers possible.

[spwill]

Metservice latest hourly observation showing 29.8mm at kerikeri

[jamie]

Metservice have posted a northland radar shot on their Facebook site. Very heavy rain showing up on the radar. Which they would hurry up and link it up.

[Tornado Tim]

Which they would hurry up and link it up.

If they have data flowing into the office then its linked up (but to what extend im not sure), what I think is holding it up is radar data "tweaking" so the data blends well to the rest of national radar and to eliminate false echos caused by terrain etc.
The image posted by Gorgina on Metservices Facebook seems to be a metconnect image, so connection issues seem unlikely.

[Nev]

Re Northland radar data, I assumed MS still only had satellite relay, in which case continuity might be an issue due to rain-fade?

[iomkiwi]

Metservice latest hourly observation showing 29.8mm at kerikeri

I had around 75mm in the three hours after 6pm

[Nev]

Really blowing out here now. Tiritiri currently gusting to 115km/h and Whangaparaoa was 96km/h...

[NZstorm]

22mm overnight here. Upto 100mm in 12hrs on Coromandal ranges.


Looks like a showery day developing. We want to get some surface heating today to spice the convection up into thunderstorms.
18C would be a good temp today for convection.

[spwill]

Not sure about much sunshine today, the current low cloud cover will go next hr or two but Cb cloud over Northland is coming down this morning.
Currently 12C, dewpoint 12C

[Nev]

22mm overnight here. Upto 100mm in 12hrs on Coromandal ranges.

Kerikeri around 105mm... 33mm here and calm and sunny now.

[Tornado Tim]

Few Storms 100ks out from Cape Reinga.
Metservices Thunderstorm Outlook looks promising today:

AMENDED TO RAISE RISK OVER NORTHERN NORTH ISLAND to HIGH

Temperatures aloft are expected to cool today leading to increasing instability.Daytime heating is becoming strong enough now to trigger afternoon convection along lines of wind convergence.

This morning, there is a moderate risk of one or two thunderstorms over northeastern Northland where a narrow band of heavy showers is moving southeast .

There is a high risk of scattered thunderstorms forming over Northland,Auckland,Waikato and Coromandel Peninsula this afternoon with rainfall rates generally in the 10-25mm/hr range. There is an additional risk that one or two of these may produce localised downpours in the 25-35mm/hr range due to heavy showers moving over the same location for several hours. All this activity is expected to move out of Northland towards evening and then move from Auckland,Waikato and Coromandel Peninsula into Bay of Plenty this evening. For all other locations north of a line from north Taranaki to East Cape there is a low risk of thunderstorms through the period.

Elsewhere, no thunderstorms or significant convection expected.

[David]

22mm overnight here. Upto 100mm in 12hrs on Coromandal ranges.

Kerikeri around 105mm... 33mm here and calm and sunny now.

You got a fair bit more than us Nev... 19 mm for Howick.

[David]

Sun is shining here, so should warm up fairly quickly. Currently 15C with dewpoint 14C.

[spwill]

Missing the sun today with the old anvil cloud moving down from the north.

Current weather, overcaste, 15C, dewpoint 14C, towering cumulus clouds to the southwest

[treetop]

I:ll risk some egg on the face and go for possible thunderstorms Tauranga to Waihi tomorrow afternoon in the light southerly flow and hopefully some AM sunshine to boot things along ,going for 19/20 deg as well.

[NZstorm]

Today was the risk day for thunder but it was a conditional risk on there being surface heating. Not a great time of year to be relying on heating.

[treetop]

nothing in Tauranga today, tonight looks like everything will break up as it crosses the waikato. Yes tomorrow a long shot but weather often delivers when not forcast.

[David]

GFS surface pressure for midday Saturday. That sure is a massive anticyclone.

[tgsnoopy]

nothing in Tauranga today, tonight looks like everything will break up as it crosses the waikato. Yes tomorrow a long shot but weather often delivers when not forcast.

I'll be in the Waikato tomorrow, so that just increased the odds

[NZ Thunderstorm Soc]

GFS surface pressure for midday Saturday. That sure is a massive anticyclone.

Yes. Looks like a period of settled weather for NZ to end off August, although could be a tad cold at nights.

[NZstorm]

Some heavy showers here overnight with 15mm in my gauge this morning.

[spwill]

Some colder nights on the way, August has been frost free around here so far.

A moist air flow and wet weather for eastern OZ next week.

[Skywatcher]

8C here and just had a brief flurry of either fine snow or very small hail - it was blowing about in the wind.

[Razor]

8C here and just had a brief flurry of either fine snow or very small hail - it was blowing about in the wind.

As is the norm for this year, its all goign out to sea/ over the peninsula

[melja]

Does anyone know whats happened to Graeme Kates Arthurs pass website? its now saying no longer available.