Agree, if its SW it can sometimes create a decent chain shower set up however.... WSW it goes out to sea. That's how i understand it anyway. I guess if the flow is straighter than or equal to the angle the SI is, then some showers will occur. Seems to be a few incoming atm.
Very cold and unstable SW blast, Eastern SI 25th Sept
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- snowchaser01
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Last edited by snowchaser01 on Wed 25/09/2019 22:42, edited 1 time in total.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Had about a 30-40 min period of snow here, slushy accumulation on the ground which was well wet from earlier rain. Seems to have stopped now.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
IMO, small window for snow in Christchurch approaching from cold convection before the flow goes more SW. Currently temps around 2c with a 1c DP from what I can see.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
You can see the flow going SW from about 3am on the merservice maps. Snowchaser WSW is no show for Canterbury. A SSW is what we want. I think thats what it is currently?
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Yes agree, WSW is all out to sea like i said. Currently inbetween lol... touch and go IMOmikestormchaser wrote: ↑Wed 25/09/2019 22:40 You can see the flow going SW from about 3am on the merservice maps. Snowchaser WSW is no show for Canterbury. A SSW is what we want. I think thats what it is currently?
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Tomorrow looking at the BSCH gfs, looking dry. Light NW flow at the surface. variable with a WSW in afternoon. 13-14C so a cool day
Last edited by mikestormchaser on Wed 25/09/2019 22:53, edited 1 time in total.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Second band of blue (on radar) moving onto Chch now. Not as big, but air has chilled down enough for at least sleet in the city.Cyclone Tracy wrote: ↑Wed 25/09/2019 22:28 IMO, small window for snow in Christchurch approaching from cold convection before the flow goes more SW. Currently temps around 2c with a 1c DP from what I can see.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Nice mammatus as the cloud moved NE over Geraldine about lunchtime and then moved over to the NE developing possibly further as it worked it's way north to produce a more colder cutting underneath with it resulting in the hail that Tony got plus a few strikes of lightning possibly around the Rakaia Gorge area?
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
+0.3°C, ground and roofs dappled with frozen snow. Very picturesque.
Sky mostly clear, a few low clouds to south-east and north-west.
Sky mostly clear, a few low clouds to south-east and north-west.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
reports of snow right down on the hills around Lake Taupo this morning (i.e 500m altitude)
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
As usual in these setups, a nonevent here - a brief squall around 10pm with a small amount of hail, 0.8mm at Kelburn. Clear this morning.
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Re: Very cold and unstable SW blast, Eastern SI 25th Sept
Similar in Kaikõura, mainly some gale strength gusts and some brief heavy rain as the rain component of the cold front came through late at night. Back to a beautiful day today.