This tasman low

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Manukau heads obs
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This tasman low

Unread post by Manukau heads obs »

I see a dominant center now NW of cape reinga
7hpa drop is pressure at the cape in the last 3 hours!
this low looks to me to be deepening very quickly
and its already raining in northland, quite heavily (8mm at brynderwyn), and the temperature in the waipu, brynderwyn area is only 9.8oc with heavy rain.
that is very cold for the middle of the afternoon for northland!!!
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Michael
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Unread post by Michael »

I always find it cold when theres rain around even in the summer with a crappy durnial range too :(
You'll find in one of these circulation lows that where the wind flow don't cross the ranges are always cold when persistant rains falling.
the map looks like it is (the low) is being blown apart by the jetstream?
Manukau heads obs
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Unread post by Manukau heads obs »

the jetstream should help it...as a vent....but it is making it enlogated...as teh jet stream has not kinked much yet around it....
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Unread post by GraemeWi »

9 degrees (and dropping), here at 6pm, 1002mb (drop of 3mb since 4pm). Rain as well. Nice
Manukau heads obs
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Unread post by Manukau heads obs »

yup, 9.6oC here now too,,,,and the barometer dropping steadily
it does not get much colder or more miserable that this in the winterless north!
at 3pm cape reings had a good ENE wind blowing and the barometer still falling qucikly !

the SWer on the other side could be stronger than forecast me thinks...
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Unread post by NZstorm »

More of a drizzly rain here now....a chilly 9.2C here. We are not use to wind and rain with such low temperatures in Auckland. Midday sounding shows the freezing level at 2000m, so surface temperatures misrepresent
the airmass over us abit. Baro at Cape Reinga now stabilising around 996hpa.
Manukau heads obs
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Unread post by Manukau heads obs »

yeah,,...and cape reunga has a northerly now, and there temperature has jumpoed to 13.9oC in the warm sector, so that puts the low center to the west of cape reinga......just as i thought, it is moving SE and will pass right over the auckland area (I tried to tell Bob that this afternoon!)
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Unread post by Michael »

Manukau heads observer wrote:the SWer on the other side could be stronger than forecast me thinks...
I agree on that :( the SW is always worse than the N or NE)

No wonder Aucklanders travel overseas at this time of the year ;)
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Unread post by tich »

More of a drizzly rain here now....a chilly 9.2C here. We are not use to wind and rain with such low temperatures in Auckland. Midday sounding shows the freezing level at 2000m, so surface temperatures misrepresent
the airmass over us abit.
9C is quite a normal temperature during wind and rain in winter in Christchurch, though we haven't had many cold, wet days so far this winter. You'll probably feel jealous once you've heard about how lovely today has been in Christchurch today. We started with another frost, but it got up to about 13C this afternoon, with clear skies and not much wind. But we'll probably be paying for it tomorrow.

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Manukau heads obs
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Unread post by Manukau heads obs »

update:
now only 8.8oC and 4mm of rain now, easterly has increased to 7 to 15 knots......
this is a cold rain we dont see very often up this way (execpt for briefly in cold squally showers)
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Unread post by Dean. »

Sounds all good Brian,pity theres no high mountains around your area.
cheers.
Manukau heads obs
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Unread post by Manukau heads obs »

yeah, if it got down to 5oc, then yes we could expect snow on the top of the coromandel range...(3000 feet) but as steven pointed out, its more of a surface cold....
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Manukau heads obs
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Unread post by Manukau heads obs »

we got down to 7.6 oC with rain at 6am before the southerly and warmer temperatures arrived
thats very cold for here !
i wonder how cold we will get here 2 nite when the real cold blast arrives
the showers sure look cold on the sat pic moving onto the far south!
Last edited by Manukau heads obs on Fri 04/07/2003 07:41, edited 1 time in total.
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Unread post by GraemeWi »

I saw the barometer sitting at 992 at about 2am this morning, was raining quite a bit, and I was glad of the cat sleeping on my feet ;)
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Unread post by Michael »

It appears to be absorbed in to the usual large trough now moving towards the chathams now-the high in the tasman has now turned into 2 centres so only the south Island and Ruapehu will get the snow now and be just boring showers in the west of "our" Island
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