NZ Weather Forum

Posted: **Mon 21/03/2022 09:12**

Getting some torrential bursts here now, 22mm last hour

Posted: **Mon 21/03/2022 09:14**

Lots of thunder and lightning here. And with a cooler temperature it is all a very welcome change except I can see that my lawns went postal overnight.

Posted: **Mon 21/03/2022 09:16**

There is flooding in low parts of some roads here in Grey Lynn, stormwater drains can't cope, had new record of 12mm/min rain rate here! 60mm in the last hour

Posted: **Mon 21/03/2022 09:18**

Sudden lull in the rain and wind did a 180 degree reversal which is interesting

Posted: **Mon 21/03/2022 09:51**

My station maxed at 33mm in an hour, but clearing now. So close to my station record

Posted: **Mon 21/03/2022 10:00**

for a change Aucland city has done better than our area
48mm here in total ,can't complain...we right on the edge of the last burst...we might get a bit more yet

Posted: **Mon 21/03/2022 10:18**

102mm here, at 6am there had only been 10mm.

Driving back into Auckland there was quite a bit of flooding but that will clear quickly as rain has stopped.

Niwa say Abany recorded 76.8mm in an hr this morning

Posted: **Mon 21/03/2022 10:32**

Some crazy photos on stuff.co.nz of flooding round greenlane and north shore. Incredible scenes

Posted: **Mon 21/03/2022 11:06**

69mm here this morning, although more central Waiheke still getting the odd thunder.
Blue skies to the NE. Can hear the local fire brigade sirens going off...

Posted: **Mon 21/03/2022 11:25**

Couple of stills taken from Video, North Shore, Wairau Valley.

2022-03-21_10-19-08.jpg

2022-03-21_10-20-10.jpg

2022-03-21_10-20-55.jpg

2022-03-21_10-22-15.jpg

Posted: **Mon 21/03/2022 11:47**

Our wx station at Hobsonville had some pretty solid rainfall for an hour from about 7:50am onwards...

1 hour hit.png

153mm for the day so far

Posted: **Mon 21/03/2022 12:21**

Metservice wrote: At 11:37 am, MetService weather radar detected severe thunderstorms near MARAMARUA, TE KAUWHATA, MANGATAWHIRI, MIRANDA, WAERENGA and THE HUNUA RANGES.

These severe thunderstorms are moving towards the south, and are expected to lie near HAMILTON, HUNTLY, NGARUAWAHIA, TE KAUWHATA, OHINEWAI, WAITERIMU, TAUPIRI, ORINI, GORDONTON and WHITIKAHU at 12:07 pm and near HAMILTON, CAMBRIDGE, GORDONTON, LEAMINGTON, MATANGI, TEMPLE VIEW, HAMILTON AIRPORT and EUREKA at 12:37 pm.

These thunderstorms are expected to be accompanied by torrential rain and damaging wind gusts.

Torrential rain can cause surface and/or flash flooding about streams, gullies and urban areas, and make driving conditions extremely hazardous.

Very strong wind gusts can break branches from trees, damage roofing, and make driving hazardous especially for high-sided vehicles and motorcycles.

A Severe Thunderstorm Watch remains in force for AUCKLAND, GREAT BARRIER ISLAND, COROMANDEL PENINSULA and WAIKATO.

The National Emergency Management Agency advises that as storms approach you should:
- Take shelter, preferably indoors away from windows;
- Avoid sheltering under trees, if outside;
- Get back to land, if outdoors on the water;
- Move cars under cover or away from trees;
- Secure any loose objects around your property;
- Check that drains and gutters are clear;
- Be ready to slow down or stop, if driving.
During and after the storm, you should also:
- Beware of fallen trees and power lines;
- Avoid streams and drains as you may be swept away in flash flooding.[/quote
image.png

Posted: **Mon 21/03/2022 12:31**

David wrote:Some PWS inland from Whangarei showing some insane numbers. This one showing 140mm in an hour earlier today similar numbers on nearby stations too https://www.wunderground.com/dashboard/pws/IWHANG185

The whole NZ record for 1hr is 134mm at the Cropp River! I guess being a PWS it won't count but alignment with neighbouring PWS makes this quite credible.

Sent from my SM-N950F using Tapatalk

Posted: **Mon 21/03/2022 12:39**

40mm in 30 mins here. 100 since 5am ish.

Sent from my iPhone using Tapatalk

Posted: **Mon 21/03/2022 13:18**

Torrential Rain in Hamilton for the last hour or so, with few good claps of Thunder with CG's. classic Thunderstorm low and High on the barometer.

Posted: **Mon 21/03/2022 13:35**

Rain now stopped with 114mm. 60 of that fell in 60 minutes. Suspect it was more but the wireless connection I noticed was missing the off data packet in the peak rainfall.

Sent from my iPhone using Tapatalk

Posted: **Mon 21/03/2022 15:01**

4000~+ lightning strikes in an hour - NIWA tweet was posted around 6am your time. A few flooding pics further down the tweet.

https://twitter.com/NiwaWeather/status/ ... 1948836864

Posted: **Mon 21/03/2022 15:46**

A couple of photos of the Waikato Cb seen from near Ramarama late morning, I could see plenty of distant lightning with it.

Posted: **Mon 21/03/2022 15:49**

A couple of photos of flooding in the city this morning shortly after the rain had stopped.

Posted: **Mon 21/03/2022 17:40**

An area of convergence on the North Shore currently, some thunderstorm activity has formed with it.

Posted: **Mon 21/03/2022 17:57**

The north shore convergence line just now was pretty good - plenty of thunder, and just missed the bulk of the rain. Furious scud action

IMG_20220321_173948054_1a.jpg

Posted: **Mon 21/03/2022 20:13**

Will keep an eye Wednesday for thunderstorm chances. The upper cool trough will be crossing, plenty of low level moisture and some convergence showing. See how it looks on the day.

Posted: **Tue 22/03/2022 09:07**

I see the 56.6mm in one hour at Auckland airport yesterday was a record there, the previous one hour record there was 53mm.
Leigh holds the record for the Auckland region at 109mm/hr, 30 May 2001.

Posted: **Tue 22/03/2022 09:22**

the North Shore CB late yesterday arvo from here

IMG_20220321_175949_802.jpg

Posted: **Tue 22/03/2022 15:12**

spwill wrote: ↑Tue 22/03/2022 09:07 I see the 56.6mm in one hour at Auckland airport yesterday was a record there, the previous one hour record there was 53mm.
Leigh holds the record for the Auckland region at 109mm/hr, 30 May 2001.

Here's a few more stats from NIWA and MetService for posterity:

1 hour rainfalls (mm) on March 21, 2022
76.8 .. Auckland, Albany - to 9am
64.4 .. Whangarei Aero - to 7am
56.6 .. Auckland Aero - to 10am
52.0 .. Auckland, Mangere - to 10am
52.0 .. Whenuapai Aero - to 9am
51.6 .. Leigh - to 9am
46.0 .. Auckland, Motat - to 9am

12 hour rainfalls (mm) to Noon on March 21, 2022
118.6 .. Auckland, Albany
110.8 .. Warkworth
96.6 ... Whenuapai Aero
94.4 ... Auckland, Mangere
93.0 ... Auckland, Motat
91.2 ... Auckland Aero

24 hour rainfalls (mm) to 9am on March 21, 2022
138.4 .. Purerua
120.0 .. Kerikeri
114.0 .. Kerikeri Aero
113.8 .. Kaikohe
112.8 .. Whangarei Aero
83.2 ... Whangarei

NZ Weather Forum

Heavy rain and thunderstorms 20-23 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March

Re: Heavy rain and thunderstorms 20-22 March