Tasman low

Thunder · Unread post by **Thunder** » Sat 17/09/2005 02:17

Dam exciting stuff!!!

(News Talk Zb)

Hamilton hit by storm

16/09/2005 23:34:02

A short sharp violent storm has hit Hamilton City.

Police report it moved across the Waikato city from east to west, bringing down several large trees over a wide area.

Many roads are blocked and a number of houses in the Hillcrest area of Hamilton and Cambridge Roads have had roofs blown off.

The Fire Service is dealing with these emergencies.

Motorists in the affected areas are being advised to take care.

Manukau heads obs · Sat 17/09/2005 05:59

good stuff!!!
good you are safe foggy!
but how can it move east to west in a westerly wind, thats a booboo

NZstorm · Unread post by **NZstorm** » Sat 17/09/2005 06:53

Looks like you had a great storm down there Foggy. My thoughts on the wind damage is a big squall rather than tornado but I would be happy to be proven wrong, being a tornado fan.

Copy on the 1200Z NZWP sounding below for its worth. Helicty was 134 at Auckland.

tgsnoopy · Unread post by **tgsnoopy** » Sat 17/09/2005 08:13

Foggy Hamilton wrote:Watch out Tauranga!

Huge gusts here with a very strong thunderstorm has now passed east and its heading for Tauranga!
Delivering very heavy rain/ bursts of hail, and very squally winds!
Over 100km/h i'm guessing

Sorry, If anything happened I slept through it, I was knacquered and fell asleep

squid · Unread post by **squid** » Sat 17/09/2005 13:46

hey there i time post perosn here just though i would keep you posted on how things are up here in northland as this low passes the pressure has started to drop now and the wind has swung to the north north west pressure dropped 2hpa in the last 45 mins so this could b the beginning of this intense system may break some personal records for me aswell bring it on

Gary Roberts · Unread post by **Gary Roberts** » Sat 17/09/2005 13:49

squid wrote:hey there i time post perosn here just though i would keep you posted on how things are up here in northland as this low passes the pressure has started to drop now and the wind has swung to the north north west pressure dropped 2hpa in the last 45 mins so this could b the beginning of this intense system may break some personal records for me aswell bring it on

Keep us posted Squid. And welcome to the forum!

Shepherds Valley WX · Sat 17/09/2005 14:21

Hey Guys.... I just heard a crash on my roof and upon further inspection discovered the remains of my WS2310 Anenometer in the gutter! Plastic housing looks to have disintegrated causing it to fall from the mounting pole into the the side of the house.Very gusty here now on the airfield, up around 50kms. Gutted I can't record any further wind data

Looks like this could be a big one!

Anyone got a spare 2310 windmeter they want to sell!!!

Manukau heads obs · Sat 17/09/2005 14:24

oh no!
i have one you can have (for free)
maybe you could come out here tomorrow afternoon on the storm chase I have organised, and take it home with you

(see the thread I started http://www.weatherforum.org.nz/forum/vi ... php?t=1497 )

maybe it is UV damage that made the plastic brittle?

spike_01 · Unread post by **spike_01** » Sat 17/09/2005 14:29

Here is a handy site but its probably already known in here...

http://homepages.paradise.net.nz/tmcgav ... ather.html

Willoughby · Unread post by **Willoughby** » Sat 17/09/2005 14:30

Main low pressure vortex, incoming shortly with it's first embedded front to Auckland. Already arrived in Northland

Aucklanders can expect around 47mm until Tuesday,
New Plymouth and Hamilton 60mm
Tauranga 46mm
Napier 34mm
Wellington 67mm
Nelson 40mm,
Christchurch 41mm (some snow, as can Otago Invercargill etc etc,)
Dunedin 16mm

Election winner notified NOW! on this slp map for midnight.

Who ever wins the election, we should call it their low

You can just see that SOOOOOPPPING cold air!!

Shepherds Valley WX · Sat 17/09/2005 14:32

Hey Brian,

Mate thats awfully good of you...I saw that thread, but unfortunately I am tied up with "family commitments" tommorow...I know, the first "real" storm for ages and I'll be helping Granma with her coffee....tell me about it, it guts me almost as much as losing the wind meter!!!

Can you post it to me? And I am happy to pay you for it! Let me know anyway...email me off list if easier:
[email protected]

Manukau heads obs · Sat 17/09/2005 14:33

yes, ligtht rain started already here, and heavier in a line over auckland (cumulus build up shower line, left over from yesterday most likely)
we really need this rain too!

Shepherds Valley WX · Sat 17/09/2005 14:43

Chances are you will recieve a good dosing of rain over the next few days. Hows your spring pasture growth? Started yet?

Let me know what you want to do about that wind meter!!

Cheers mate,
Andrew

Manukau heads obs · Sat 17/09/2005 15:41

latest sat picture shows the low realy starting to get organised and to start to rotate and deepen rapidly!
also latest rain radar shows a developing squall line heading for the kaipara area...will be lightning in that i would say

Manukau heads obs · Sat 17/09/2005 16:04

i love it
you see the squall line on radar
and then watch the rain accumulate live:
Whangarei
http://www.hansenproducts.co.nz/weather/

GraemeWi · Unread post by **GraemeWi** » Sat 17/09/2005 16:06

The rainfall rate is picking up here - still pretty calm windwise though. We are sheltered by a small ridge to the north-east, but will cop it from the north west if the predicted wind levels hit.

[edit - dropped 2 hpa over the past 2 hours, now 1005]

Cheers,

G

squid · Unread post by **squid** » Sat 17/09/2005 16:33

hey guys gals just taken a look at the low pressure down to 984 and deeping looking like it is really cranking up now pressure has dropped abouth 2hpa now sitting on 1003 having a few heavy showers crossing over wind much the same fairly lightish but that will change in the coming hrs noticed that we r under a stong wind warning and a heavy rain watch it will b a very interesting 24-48 hrs

Manukau heads obs · Sat 17/09/2005 22:24

NNE now gusting to 90kmh at cape reinga
baro dropping steady here since 8pm

GraemeWi · Unread post by **GraemeWi** » Sat 17/09/2005 22:30

Manukau heads observer wrote:NNE now gusting to 90kmh at cape reinga
baro dropping steady here since 8pm

I've been watching you barometer drop (online) - I thought Whangarei would be seeing wind by now... though I can hear the gum trees here getting some wind

Cheers,

G

Manukau heads obs · Sat 17/09/2005 22:38

now that i did a hardware mod on my Davis VP to get 1 minute barometer updates instead of only every 15 minutes (a disapointing aspect of the VP), its really good to see the baro changes going on
last half hour its dropping a bit faster

bed time now...might be up early!!

tgsnoopy · Unread post by **tgsnoopy** » Sun 18/09/2005 01:06

Not a lot happening in Tauranga so far. As I head off to bed we've only had maybe half a dozen distant lightning flashes I've observed. Roll on the morning, barometer dropping (about 6 points so far this evening).

ricky · Unread post by **ricky** » Sun 18/09/2005 01:20

Wow!, hows this for incoming!?
Just got home from various <ahem> political functions... wind is starting to pick up, gusting 50kph now, just starting to rain, 1am radar shows an extensive very heavy band approaching, thunderstorms quite active over Northland...
Barometer dropping 2.5hPa/hr now at 996.9 hPa
damn just going to have to stay up all night lol

Willoughby · Unread post by **Willoughby** » Sun 18/09/2005 01:28

Just moderate rain tonight so far, had a heavy fall around 8.00pm.
Heaviest rain to make landfall soon in West Auckland
Sustained northerly winds of 83km/h at Cape Reinga

Lifted Indicies set to drop to -1.4 here with CAPE at 225j/kg
Auckland: LI of -1.1 and CAPE up to 280j/kg
Strong gusty/squally northwesterlies, not gale as the MetService quotes.
Lots of instability for Hawke's bay too
Heaps of wind shear from this low in the Tasman.

Looks like a squall line is going through Northland with thunderstorms north of Warkworth.

Something looks very juicy instore tonight for Auckland according to GFS 06z 17 September +24! Keep a watch

Rain heavyish now, with light NE, 12c, dewpoint 11c Baro: -1.48hPa/hour (994hPa)

squid · Unread post by **squid** » Sun 18/09/2005 02:14

its 2 15am bro is 987 and falling fast average falling rate of 2 hpa since about 9 pm now about 2.7 hpa pouring with rain atm and a stiff NNE breeze starting to get interesting now

Manukau heads obs · Sun 18/09/2005 03:12

3am, woekn up by heavy rain
radar shows very widespread heavy rain

sat image shows a 2nd cold front behind this one now too
wind increasing
17mm so far
back to bed...