Tasman low 20-23rd July

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David
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Re: Tasman low 20-23rd July

Unread post by David »

31mm rain here since about 1pm yesterday
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Re: Tasman low 20-23rd July

Unread post by Vertigo »

quite a storm here, overnight. lovely driving rain and trees being blown around. i do like a good strong low like this.
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Re: Tasman low 20-23rd July

Unread post by David »

David wrote:31mm rain here since about 1pm yesterday
More like 37mm (from my manual rain gauge) - been having some problems with under-reading Davis gauge
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

Looks so dark out there yet no rain. The band is well to the SE now. According to the models it should be quite persistent rain today and gradually becoming heavier. That band must be about to turn around and intensify.
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Re: Tasman low 20-23rd July

Unread post by Razor »

Yeah sure is dark A lull since about 8.30 here in town. Looks damned wet tonight/ tomorrow, could cause some issues. I'm surprised there isn't a full warning out yet.
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

Razor wrote:Yeah sure is dark A lull since about 8.30 here in town. Looks damned wet tonight/ tomorrow, could cause some issues. I'm surprised there isn't a full warning out yet.
Totally agree! I see they have cancelled one in the updated weather warnings. Just driving down the road before and water in paddocks is quite incredible from the additional 10-15mm weve had.
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Re: Tasman low 20-23rd July

Unread post by Razor »

Metservice 'watch' from last night indicated it would be reviewed by 9am this morning, so presumably something is imminent in terms of an update
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Re: Tasman low 20-23rd July

Unread post by Razor »

Right on cue...haha

Canterbury folk will well know to look out though, we do not need the "metservice warnable threshold' to be met for significant problems right now. 20-30mm will be enough for flooding with current water tables so high

Severe Weather Watch
Valid to: 9:30am Friday 23 July 2010


SEVERE WEATHER WATCH FOR BAY OF PLENTY, CANTERBURY AND KAIKOURA
ISSUED BY METSERVICE AT 0930hrs 22-Jul-2010

HEAVY RAIN FOR THE RANGES OF BAY OF PLENTY EASING THIS AFTERNOON

A PERIOD OF HEAVY RAIN ABOUT CANTERBURY AND KAIKOURA COAST THIS
EVENING AND FRIDAY

A front is expected to move eastwards over the Bay of Plenty this
afternoon, preceded by a moist northeast flow and brief heavy rain.
It looks unlikely rainfall there will approach warning amounts.

The front is expected to become slow moving over the eastern South
Island later today, before drifting slowly northwards during Friday.
This is likely to bring a period of heavy rain to the Canterbury
foothills and to the Kaikoura Coast in a southeast flow, this evening
and Friday. Rainfall amounts may approach warning criteria in some
places.

The watch for heavy rain in northern Marlborough and the Coromandel
Peninsula is now lifted.

This Watch will be reviewed by 9PM THURSDAY 22ND JULY
Forecast prepared by: HEATH GULLERY
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

Razor wrote:Metservice 'watch' from last night indicated it would be reviewed by 9am this morning, so presumably something is imminent in terms of an update
Was updated at 930am now and they have kept it as a watch and not a warning. Surely they should be issuing the warning now if its valid for tonight and tomorrow....

Some drizzle is picking up again.
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Re: Tasman low 20-23rd July

Unread post by spwill »

Some chilled air over the south of NZ, Gore still below 0C, -0.7C, Invercargill on 1.3C.

Mild humid flow over the top of NZ with 14C dewpoints, overcast high cloud currently but any sunshine today should lead to some very mild temps
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Re: Tasman low 20-23rd July

Unread post by NZstorm »

Not a bad day in Auckland, 17C with high cloud. Looks like a trough moves across tonight with a heavy shower risk.
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Re: Tasman low 20-23rd July

Unread post by Tornado Tim »

17°C and a DP of 15°C outside atm with towering cumulus, that temp/dp is very unusual for winter!

If this continues into spring which it looks like it will because of the developing La Nina, thunderstorms would be more likely esp if we have a few sub tropic lows come our way or surface lows :)
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

Misty light drizzle all day except for about half an hour earlier this morning. Rain should pick up from after 6pm im thinking and should be quite a wet 24 hours.

3pm: Drizzle starting to pick up now.
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Re: Tasman low 20-23rd July

Unread post by Vertigo »

NZstorm wrote:Not a bad day in Auckland, 17C with high cloud. Looks like a trough moves across tonight with a heavy shower risk.
incoming now - looks like a thunder risk in it. (not happy, took a sick day today and started de-rusting my car).
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Re: Tasman low 20-23rd July

Unread post by snowstormwatcher »

This system has been a bit of a non event here so far no rain here today and only 0.5mm overnight. Air pressures to high for any heavy rain for this area still 1016hpa here for any real rain to eventuate it would need to drop at least 10-15 hpa.
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Re: Tasman low 20-23rd July

Unread post by Razor »

Vertigo wrote:
NZstorm wrote:Not a bad day in Auckland, 17C with high cloud. Looks like a trough moves across tonight with a heavy shower risk.
incoming now - looks like a thunder risk in it. (not happy, took a sick day today and started de-rusting my car).
I hope you got a doctors note for your employer #-o
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

You can see when ya run the loops now that the band / flow is starting to do a turn to the SE
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Re: Tasman low 20-23rd July

Unread post by NZ Thunderstorm Soc »

Dull and grey and misty here. Real Scottish weather. <3

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Re: Tasman low 20-23rd July

Unread post by Michael »

We havent had that for a while.as long as they stay away :B
Anyway tomorrow has -25 at 500hpa over auckland tomorrow so something could happen.
NZ Thunderstorm Soc wrote:Dull and grey and misty here. Real Scottish weather. <3

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Re: Tasman low 20-23rd July

Unread post by NZstorm »

Very heavy shower here atm.
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Re: Tasman low 20-23rd July

Unread post by Richard »

NZ Thunderstorm Soc wrote:Dull and grey and misty here. Real Scottish weather. <3

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My turn for a bit sun today,though not a lot,could feel a bit of warmth when it did too.
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Re: Tasman low 20-23rd July

Unread post by snowstormwatcher »

Heavy drizzle has just started up here and a southeast brezze is also starting to develop.
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Re: Tasman low 20-23rd July

Unread post by David »

NZstorm wrote:Very heavy shower here atm.
Just got it here, when the SKY signal is lost it's a good indicator there's some real heavy stuff nearby! It arrived seconds later, peak instantaneous rate here reached 87mm/hr :D
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Re: Tasman low 20-23rd July

Unread post by CHCH Weather Chaser »

Looks like this system doesnt last well into tomorrow anymore. Looks to lose sting early morning.
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Re: Tasman low 20-23rd July

Unread post by melja »

Back to rain here again since 5pm with a current rate of 1.5mm/h so only light but still rain and not drizzle.
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