New thread for end of week T/S

Thunder · Unread post by **Thunder** » Sat 13/11/2004 16:17

Low cloud has come over here again in Chch, bugger! It's still warmish and humid but not warm enough. However, the low cloud seems to cease on the outskirts of Chch though and as Ricky noted in the other thread, a lightning strike has occured just NW of Chch somewhere in the foothills area. When looking from my place you can see there is some good Cu action out on the plains which started around 11am this morning, I can't tell whether there's Cb or not becasue of the low cloud. No chasing today though, maybe tomorrow? But the upper air is meant to stabilise more so maybe not. Monday or Tuesday could be interesting.

Yes, some good lightning around southern NI areas! Oh to hear thunder again!

GreggWard · Unread post by **GreggWard** » Sat 13/11/2004 16:21

A very intense shower over Feilding (15min N), however the same shower cloud is taking its time to get here and is starting to weaken.

spwill · Unread post by **spwill** » Sat 13/11/2004 16:49

Looks like there are Convective Biuld ups this afternoon from about Waikato to Wairarapa. It will peak over the next two hours.

Overcast in Auckland with that Front just to our North but it will have moved on by the morning and I think we will see convective Thunderstorms around Auckland tomorrow before the next Front moves in later.

Thunder · Unread post by **Thunder** » Sat 13/11/2004 16:54

Another strike has occured in the foothills. Today with the temp over Chch is just not enough. We would need to get to atleast 24 and even then we would only probably get big Cu. The plains however is above that inversion so if the temp there has got to 24 today which is likely it would be unstable to around 9000m. Chch, if we got to 24 we could conditionally be unstable to 8300m. At the moment it's stable as anything although there is a bit of mid layer instability but that doesn't count for anything.

GreggWard · Unread post by **GreggWard** » Sat 13/11/2004 17:21

A bit of a fizzer as far as Thunderstorms go here. It looked like the Wairarapa/Hawkes Bay, were the places to be.

NZstorm · Unread post by **NZstorm** » Sat 13/11/2004 17:49

I think we will see convective Thunderstorms around Auckland tomorrow before the next Front moves in later.

Dewpoints should be up a bit tomorrow, perhaps around the 18C mark, which may well induce some decent instability. Also the wind shear envirnment should improve tomorrow, little or no shear over the NI today. Have to wait and see though how tomorrow shapes up. That front looks almost stationary over Northland at the moment.

Michael · Unread post by **Michael** » Sat 13/11/2004 18:46

It will be 16 over 19 with continual rain tomorrow all day The nw flow will only reach northland and be dry south of the platue with NE

tich · Unread post by **tich** » Sat 13/11/2004 19:11

When looking from my place you can see there is some good Cu action out on the plains which started around 11am this morning, I can't tell whether there's Cb or not becasue of the low cloud.

Definitely Cbs I could see to the northwest about 4PM. You'd think it would've been warmer inland in these northeasterly conditions, but Ashburton only got to 14C today, while Chch (more exposed to this wind) reached the early 20s for a time.

Thunder · Unread post by **Thunder** » Sat 13/11/2004 19:29

Good to here Ben, thought there might be something out there. It has cleared a bit this afternoon so I quickly took some pics of Cu I could see. You can see in the pics how much low cloud there is.

NZ Thunderstorm Soc · Sat 13/11/2004 20:48

tich wrote:
but Ashburton only got to 14C today, while Chch (more exposed to this wind) reached the early 20s for a time.

I noticed that too.
I think that Ashburton would of been more into the 20s, possibly 24???

I noticed that TVOne had transmission problems around 6pm.
Did anyone else notice?

JohnGaul
NZTS

tich · Unread post by **tich** » Sat 13/11/2004 22:11

I noticed that TVOne had transmission problems around 6pm.
Did anyone else notice?

I noticed - disruption continued intermittantly, but was over by the time of the weather.

Thunder · Unread post by **Thunder** » Sat 13/11/2004 22:16

Yeah, I noticed TV one cutting out at times to. At least it wasn't the TV.

You guys can probably see better to the W / NW being that ever bit more inland than me but here I couldn't see much unfortunately.

Michael · Unread post by **Michael** » Sun 14/11/2004 07:56

Just boring rain here this morning 17c

spwill · Unread post by **spwill** » Sun 14/11/2004 11:45

Michaels "just boring rain" has moved on.
There is alot of low coud over Auckland at the moment but it is starting to clear with some Towering Cu now visible.

Temp is 20C,Dewpoint 18C.

GraemeWi · Unread post by **GraemeWi** » Sun 14/11/2004 12:51

Had a couple of short heavy showers already, the temperature at 12:50pm is sitting on 26.5 so there is a fair bit of heating going on.

Starting to see some activity to the north-west out to sea on the lightning detector... fingers crossed for a good afternoon / night!

Cheers,

G

ricky · Unread post by **ricky** » Sun 14/11/2004 13:07

yes its very active out there now... check out http://flash.ess.washington.edu/L_plot_weather_map.jpg as well

Skywatcher · Unread post by **Skywatcher** » Sun 14/11/2004 13:46

Saw some nice looking Cbs while flying home over the Tasman this morning.

spwill · Unread post by **spwill** » Sun 14/11/2004 14:14

Steven, nice photo, Cb's in cool air behind the Front.

Cloudy here with some Towering Cu + showers in our west here.

Shepherds Valley WX · Sun 14/11/2004 15:00

Hi guys, we have some big convective buildups crossing the farm now with a good rain event as well (4.0mm in less than 10mins) Murmurs of thunder can be heard also. Current temp is 20.5C and dropping with a DP of 16.5C. Baro dropping at -0.7MB p/hr. The CBs are heading towards Auckland from my position....

(actually hoped they stay around a bit longer so I could get some more of the wet stuff...

)

TonyT · Unread post by **TonyT** » Sun 14/11/2004 16:38

I fancy the potential for South Island thunderstorms tomorrow Monday - especially in Otago, Canterbury and possibly Marlborough as the low passes over in the early afternoon. The timing could be right for a lot of parameters.

Michael · Unread post by **Michael** » Sun 14/11/2004 17:02

Gusty NW this afternoon with rain cleared up about lunchtime 20c currently

Willoughby · Unread post by **Willoughby** » Sun 14/11/2004 17:03

It looks as if the front is weakening somewhat as it heads over the North Island

NASA Composite Satellite Animation

Thunder · Unread post by **Thunder** » Sun 14/11/2004 17:43

There looks to be a thunderstorm going off right now east of Omarama, I thought somewhere might get something today if the temp got high enough.

Yes Tony, hopefully things pull off tomorrow!!

spwill · Unread post by **spwill** » Sun 14/11/2004 19:05

Had just a couple of hours of sunshine here today, not enough for thundery convection but heavy showers did develop out to our west. I see Brian got 6mm at his place .

That Front moving in this Evening looks weaker, see what happens.

GraemeWi · Unread post by **GraemeWi** » Sun 14/11/2004 19:11

We have some distant thunder now (looking at the lightning map it must be very distant!) The sky is pretty dark to the west and north west. Got 14mm today so at least the cracks in the gerden will fill in

G

NZ Weather Forum

New thread for end of week T/S

Thunder heard 1500hrs NW auckland