Further heavy rain for Canterbury - April 28/29

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Re: Further heavy rain for Canterbury

Unread post by Manukau heads obs »

He he
That's cool that you analyzed the flight
Like that Jamie
Others on board would have not known so much :)
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Re: Further heavy rain for Canterbury

Unread post by Razor »

Gosh, rain radar looks to have this looping back on us for a while yet. High tide this arvo will be a real problem :-(
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

Razor wrote:Gosh, rain radar looks to have this looping back on us for a while yet. High tide this arvo will be a real problem :-(
Was just going to say that, looks to be hooking back in again. Not good, not sure how much more rain the ground can take.
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

98.1mm for the event here, and still some decent rain feeding in from the SE. Could well get to 110-120mm yet.
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Re: Further heavy rain for Canterbury

Unread post by Bradley »

CWUweather wrote:98.1mm for the event here, and still some decent rain feeding in from the SE. Could well get to 110-120mm yet.
Do you have any idea as to why your raingauge reads so much higher then tbe airports which is only 5km from Burnside? The airport hasnt even reached 60mm for the event but you have recorded nearly 100mm? Same goes for the early March event. ..
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

The airport always reads lower for some reason. I think leighton has recorded a similar amount to me.
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Re: Further heavy rain for Canterbury

Unread post by Razor »

I have 72mm but adjacent Port Hills suburbs have had more. This is one weird event, a band of rain that's forming over the Peninsula and just sitting there across to particularly the south western suburbs. Large local variances accordingly
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Re: Further heavy rain for Canterbury

Unread post by Storm Struck »

Only 51mm out this way for the event so far although a winding down would be very welcome :-) , just shows how different each system is.
I think with the first rain event back in early March the heavy rain was confined to over the city and peninsula/ mid to north Canterbury northwards, this one is much more widespread with a big bulk feeding the north otago hills and into south Canterbury.
What also comes into play is general wind direction factors, even just slightly more E-SE or S-SE to southerly changes how much impact it has in such a short distance.
The event which hit us on easter weekend was a more Easterly flow as it was a sub tropical low, so areas inland and north of city got hit harder.
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Re: Further heavy rain for Canterbury

Unread post by Karliosis »

On the note of variation, we have had less than 40mm here in Burwood. Fairly clearly sitting in the rain shadow of Banks Peninsula. Mostly drizzle and light rain here.
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

92mm in the last 24 hours, with 111mm for the whole event.
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Re: Further heavy rain for Canterbury

Unread post by CHCH Weather Chaser »

72mm for the event here and its just started raining steadily again. Radar shows it moving back into the city somewhat again.
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2014 Rainfall: Jan: 21mm Feb: 76mm March: 170mm April: 201mm YTD: 468mm
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

I just put up some pictures of the flooded Heathcote River and surrounding areas on CWU. Taken about 30 mins before high tide this afternoon.
I made a conscious effort to stay out of water and drive around it, in effort to not make any waves.
https://www.facebook.com/canterburyweat ... 9292950653
^^^ Check them out here!
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Re: Further heavy rain for Canterbury

Unread post by Storm Struck »

Interesting land enhancement of the peninsula going on there, the precipitation increases over the peninsula and moves across to the South western suburbs of the city from a southerly movement while lighter shower activity moves in at the coast near Ellesmere from a more SW direction.
I am referring to latest radars tonight if you run them you will see what I mean.

Looks like a good much needed week ahead of drying calmer weather ahead, but further upstream more big lows are appearing.
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Re: Further heavy rain for Canterbury

Unread post by CWUweather »

Did anyone notice last night that the bands of rain that were coming ashore to the south were actually intensifying as they did so. Normally it is the other way around, probably aided in creating the variance in totals throughout the city?
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Re: Further heavy rain for Canterbury

Unread post by Orion »

CWUweather wrote:...........
I made a conscious effort to stay out of water and drive around it, in effort to not make any waves.....
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Re: Further heavy rain for Canterbury

Unread post by Skywatcher »

My station recorded 61.8mm for the event and the 40.8mm yesterday is a new high daily rainfall record for April.
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Re: Further heavy rain for Canterbury

Unread post by matttbs »

52mm here, nice to see snow capped mountains again
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Re: Further heavy rain for Canterbury

Unread post by Richard »

25mm here form that system.
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Re: Further heavy rain for Canterbury - April 28/29

Unread post by NZ Thunderstorm Soc »

76.9mm all up from that system here.
202.5mm for the month, 457.6mm for the year so far. <3
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Re: Further heavy rain for Canterbury

Unread post by Razor »

Bradley wrote:
CWUweather wrote:98.1mm for the event here, and still some decent rain feeding in from the SE. Could well get to 110-120mm yet.
Do you have any idea as to why your raingauge reads so much higher then tbe airports which is only 5km from Burnside? The airport hasnt even reached 60mm for the event but you have recorded nearly 100mm? Same goes for the early March event. ..
heres the answer... http://www.stuff.co.nz/the-press/news/y ... our-months

Metservice has been underreporting!
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Re: Further heavy rain for Canterbury - April 28/29

Unread post by CWUweather »

I knew something was odd. Can't be right when MS show half of what my rain gauge says!
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Re: Further heavy rain for Canterbury - April 28/29

Unread post by Bradley »

Yep spot on, I knew 5km wasn't enough distance to explain a rain gauge consistently reporting well under what its cousin in Burnside was reporting...
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Re: Further heavy rain for Canterbury - April 28/29

Unread post by CWUweather »

Bradley wrote:Yep spot on, I knew 5km wasn't enough distance to explain a rain gauge consistently reporting well under what its cousin in Burnside was reporting...
It's not even 5km. 3.8km to be exact. Good to know that have fixed it... for now. Anyway, turns out Christchurch as already had 440mm at the airport, compared to a 620mm average... Only 4 months in! Could we double our average by December?
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