This article is only partially complete or contains information that is unverified or incorrect. Request to join the editing team to update this page Clouds and fog are identical, the only difference being the height at which they are formed. Typically fog occurs at ground or sea level. Both clouds and fog can be considered as areas of colder tempe...
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When trying to understand the atmosphere, it is useful to use a standard atmosphere model. The diagram below illustrates some of the properties of such a model:   The diagram illustrates that properties such as  temperature , density (how thick the air is in the volume it takes up) and average pressure, vary considerably as height increas...
  Temperature A temperature is an objective comparative measurement of hot or cold. It is measured by a thermometer. Several scales and units exist for measuring temperature, the most common being Celsius (denoted °C; formerly called centigrade), Fahrenheit (denoted °F), and, especially in science, Kelvin (denoted K). The coldest theor...
 Basics When considering the atmosphere as a whole, it can largely be considered as a fluid. It may not look like a fluid, but it behaves in very much the same way that a fluid would. The impacts of a number of natural phenomena has an effect on this fluid atmosphere in the following ways Rotation which is in part responsible for creating air ...
MetService @MetService Rain continues to fall in parts of the country this afternoon, and Severe Weather Warnings/Watches are still in place for some regions. Track the rain here bit.ly/NZRainRadar ^PL Original link Original author: MetService
MetService @MetService A station southwest of Rotorua recorded 62.5 mm in the last hour! The same station saw 129 mm in the last 4 hours! A Severe Weather Warning for heavy rain and a Severe Thunderstorm Watch are in force for the region. metservice.com/warnings/home ^CD Original link Original author: MetService
NIWA Weather @NiwaWeather Top 3 rainfall observations since Saturday morning ?️ ? 133.2 mm Te Puke ⬅️ More rain than Nov-Dec 2017 combined. ? 114.0 mm Whakatane ⬅️ Had 3rd wettest hour on record (43.2 mm) between 4-5 am Sunday. ? 103.8 mm Orari Estate ⬅️ 223% of the April monthly normal. Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather View from above?️shows impressive flow of moisture into rain?️affected regions. Warm colours, indicate tall clouds due to rising air. Further evidence of rapidly rising air is the "V" appearance to the clouds well offshore of Bay of Islands bit.ly/2HY9fig ~Chris https://t.co/rVNB1k2qRm Original link Original author: NIWA W...
MetService @MetService Coromandel saw 50 lightning strikes in the last 24 hours, while Bay of Plenty saw nearly 230! A Severe Thunderstorm Watch for both regions has been reissued. metservice.com/warnings/sever… ^CD Original link Original author: MetService
MetService @MetService Severe Weather Watch 4 heavy rain issued 4 Waikato, Taupo, southern Gisborne, Hawkes Bay east of Wairoa, Nelson west of Motueka, eastern ranges of Nelson, eastern ranges of Marlborough north of Kaikoura, Canterbury north of Rakaia & south of Amberley. metservice.com/warnings/sever… ^CD Original link Original author: MetServic...
MetService @MetService @egel34 Waikato is covered by a Severe Weather Watch for heavy rain. metservice.com/warnings/sever… ^CD Original link Original author: MetService
MetService @MetService Severe Weather Warning for heavy rain issued for Coromandel, Bay of Plenty, eastern ranges of Nelson, eastern ranges of Marlborough north of Kaikoura, Canterbury from the Rakaia southward, and Dunedin and north Otago. metservice.com/warnings/sever… ^CD Original link Original author: MetService
MetService @MetService Wet across much of NZ this morning, with a line thunderstorms affecting parts of Coromandel Peninsula and Bay of Plenty, where a Severe Thunderstorm Watch is in place bit.ly/STSWatch ^PL Original link Original author: MetService
MetService @MetService Severe Thunderstorm Watch issued for Northland, Auckland and Coromandel, with possible downpours. See metservice.com/warnings/sever… for more details. ^SWF Original link Original author: MetService
MetService @MetService More wet weather for much of the country tomorrow unfortunately as the low pressure system in Tasman continues to spread fronts over both islands. Strongest winds have eased, but 100km/h gusts may still affect exposed areas of Auckland this evening. bit.ly/AllWarnings ^CD Original link Original author: MetService
MetService @MetService Warnings for Auckland have been lifted. Rain has eased, although isolated heavy showers still possible until Sunday morning. Winds also easing, with no further severe gales expected. bit.ly/AllWarnings ^SWF Original link Original author: MetService
MetService @MetService Rain has eased to showers in Auckland as the rain band sink south. Strongest winds have also eased there, but 100km/h gust may still affect exposed areas this evening. bit.ly/AllWarnings ^CD Original link Original author: MetService
MetService @MetService A station southwest of Henderson recorded a downpour of 35.2 mm in the hour to 2pm! Auckland is covered by a Severe Weather Warning for heavy rain. warhttp://bit.ly/AllWarnings ^CD Original link Original author: MetService
NIWA Weather @NiwaWeather Leigh-ding the way ?️ The coastal community in the northern Auckland region observed a peak wind gust of 88.9 km/h today! Other wind reports (km/h): ? 65.5 North Shore ? 62.3 Mangere ? 54.0 Whangarei Original link Original author: NIWA Weather
MetService @MetService Severe Weather Warnings & Watches have been updated to increase the amount of rain for South Canterbury. As the radar derived rainfall image shows there has already been a significant amount of rain there. Details here bit.ly/AllWarnings ^PL Original link Original author: MetService
MetService @MetService Low bringing wind & rain. Warning/Watch in place for heavy rain in Northland, Auckland, Coromandel, Bay of Plenty, Waikato, Taupo, Nelson, Dunedin, North Otago, Westland & Canterbury. Warning/Watch for strong winds in Auckland, Northland, and Waikato. bit.ly/AllWarnings ^CD Original link Original author: MetService
MetService @MetService East to northeast gales for northern New Zealand. See bit.ly/AllWarnings for details. ^PL Original link Original author: MetService
MetService @MetService Heavy rain for northern New Zealand and parts of the South Island. See bit.ly/AllWarnings for details. ^PL Original link Original author: MetService
MetService @MetService Latest Warnings for heavy rain plus severe gales for Auckland. ^PL twitter.com/MetServiceWARN… Quoted tweet from @MetServiceWARN: Heavy Rain Warning issued for NTHLD, AUCK, GTBAR, CORO, BOP, ROTR, NLSN, WSTLD, CANTP, CANTH zpr.io/n3DXA Original link Original author: MetService
MetService @MetService Latest Severe Weather Watch ^PL twitter.com/MetServiceWARN… Quoted tweet from @MetServiceWARN: Severe Weather Watch issued for NTHLD, CORO, WKATO, BOP, TAUPO, GISB, CHCH, CANTP, CANTH, NTAGO, DNEDN zpr.io/n3DXS Original link Original author: MetService
NIWA Weather @NiwaWeather Here's a 24-hour loop of observed rainfall on its approach to NZ ?️ ? Northland drenched Fri PM-Sat AM. ? Auckland, Waikato, Bay of Plenty to see heavier falls Sat PM. ? Mid & upper South Island is rainy & snowy (at elevation)! ? Unsettled conditions stick around on Sun. https://t.co/swEzXt97dh Original link Original autho...
NIWA Weather @NiwaWeather Compare the wind gusts from Auckland's memorable 10 April event to the forecast gusts late Saturday, 28 April: ? Much stronger & more widespread on 10 April than 28 April. ? NE'erly on 28 April compared to a SW'erly on 10 April. ? Much lower impact expected on 28 April. https://t.co/a6UZcMiL9B Original link Original author...
MetService @MetService Heavy rain & strong winds heading your way #Auckland . Severe Weather Warnings are in force. Track the rain with our radar here bit.ly/AucklandRadar ^PL Original link Original author: MetService
MetService @MetService Rain affecting much of the country today, especially northern NZ and central South Island. Strong winds in the north also. See bit.ly/AllWarnings for the latest Severe Weather Warnings. ^PL Original link Original author: MetService
NIWA Weather @NiwaWeather @odoylepaul Hi Paul, they are expected this evening (after 6pm) through early Sunday morning (mostly before 2am). Not expected to be as strong or widespread as the storm a few weeks ago. -BN Location: Auckland, New Zealand Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather Strong wind potential around Auckland later Saturday from our high-res model: ? Gusty NE winds during the day, strongest east. ? Intensifying during the evening/night. ? Isolated peak gusts >100 km/h possible. ? Blowing debris, downed tree limbs, some power outages possible. https://t.co/Jc2IoLRWER Original link Original a...
NIWA Weather @NiwaWeather Weekend rain outlook from NIWA's high-resolution model: ? Heavy falls Northland Sat, arriving in Auckland Sat PM. ? Downpours for Buller, Tasman, Nelson, Marlborough Sat. ? Persistent, steady rains for Otago, South Canterbury. Watch for surface flooding & take care! https://t.co/0zuOjg11Qz Original link Original author: NI...
NIWA Weather @NiwaWeather Potential rainfall amounts (through 6am Sunday) ? Heavy: Northland, Auckland, West Coast, Tasman, Nelson, Marlborough, Otago, southern Canterbury. ? Moderate: Coromandel, Bay of Plenty, Waikato, Taranaki, Southland. ? More rain to come later Sunday & Monday. https://t.co/aMUWUDdobt Original link Original author: NIWA Weath...
NIWA Weather @NiwaWeather ??? Looking at water vapour imagery ??? A deep plume of moisture is being siphoned toward New Zealand from the sub-tropics + tropics. The result? A multi-day rain threat, heavy & soaking at times. https://t.co/AyDkBMVS75 Original link Original author: NIWA Weather
MetService @MetService The latest severe weather outlook is up on bit.ly/SWOutlook . The risks have reduced for the South Island, as the complex low is now tracking further north. However the chance of heavy rain and severe gales for much of the North Island still remains. ^TA Original link Original author: MetService
NIWA Weather @NiwaWeather The recipe for a rainmaker ?️➡️ The two-day ?️ + ⚡ animation shows 3 separate pieces of atmospheric energy (SW, W, & N) advancing toward New Zealand. Why a challenging forecast? Predicting how the 3 will interact is difficult! https://t.co/Pcp357ky3N Original link Original author: NIWA Weather
severe-weather.EU @severeweatherEU MetService retweeted: Spectacular sunset mammatus clouds spotted at the football match in Cardiff City stadium, S Wales, UK on Sat Apr 21st. Report: Jeremy Cooke Original link Original author: MetService
NIWA Weather @NiwaWeather Tasman turning busy ?️ In this wind animation, focus on: -The lack of wind on Thu-Fri! Enjoy 1-2 more days of ⛅ -The southerly in the West Coast on Fri ? -The southerly in the east of the South Island on Sat ?️ -Swirling low pressure in the upper North Island on Sat ? https://t.co/I6OT7aGBYJ Original link Original author: ...
MetService @MetService The latest severe weather outlook has been issued, with details of the weather expected this weekend. There is a risk of heavy rain and strong winds for many parts of the country this weekend - full details on bit.ly/SWOutlook ^TA Original link Original author: MetService
NIWA Weather @NiwaWeather NIWA Weather retweeted: Unsettled times ahead ?️ Moisture from 3 separate disturbances is expected to come together to cause rainy conditions across New Zealand from Friday through the weekend. Enjoy the tranquil conditions while they last! ?️ https://t.co/pwauptZu2g Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather A beautiful, mostly clear satellite shot over Aotearoa on Anzac Day ?️?️ In the distance, some cloud in the northern Tasman Sea & SW of Tasmania will come together to cause weekend ?️?️ https://t.co/vN9LlpCwjc Original link Original author: NIWA Weather
MetService @MetService Watch the development of a complex low heading our way in time for the weekend, then become slow moving over the country on Sunday with multiple centres. Note strong winds for much of NZ, possibly severe gale in places. Details bit.ly/SWOutlook ^TA https://t.co/pT3XmjnBFY Original link Original author: MetService
MetService @MetService A troublemaker in the Tasman. A low centre off of the Gold Coast will be swept out way later this week on a strong westerly jet. This low then becomes slow moving over New Zealand. This is likely to bring severe weather this weekend - see bit.ly/SWOutlook ^TA Original link Original author: MetService
NIWA Weather @NiwaWeather An area of high pressure will bring a stunning Anzac Day for most of the country with plenty of ?, with the only showers expected for the lower West Coast and Far South. A chilly early morning for many, so bundle up for dawn services! Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather Scattered showers falling over the Pacific Ocean and east just off the Coromandel. ~Chris Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather Unsettled times ahead ?️ Moisture from 3 separate disturbances is expected to come together to cause rainy conditions across New Zealand from Friday through the weekend. Enjoy the tranquil conditions while they last! ?️ https://t.co/pwauptZu2g Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather Headed to dawn service Wednesday? Here's the 7:00 am forecast cloud cover. North: Looks sharp! Don't forget the ?️. South: Plenty of ☁️ to start (but ?️ to finish). Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather The satellite shows a rather quiet day across NZ ?️, but pockets of higher cloud over the northern Tasman Sea represent a slow-moving piece of the weather system that may impact the country this weekend ?️ https://t.co/fDQUzpVtAp Original link Original author: NIWA Weather
NIWA Weather @NiwaWeather NIWA Weather retweeted: Weather-wise, the 2nd week of school holidays looks better than the 1st! ? North ⬆️ -Pick days: Wed-Thu ? -A chilly start Mon! Isolated showers Tue. Cloud increasing Fri. South ⬇️ -Pick days: Mon, Wed-Thu ? -Showers S-W, dry N-E Tue. Rain W, cloud increasing E Fri. https://t.co/YqPUYywQMI Original l...