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20/01/17
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20/01/17
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Latest weather extremes prepared 0559 EDT, Friday, 20 January 2017
State-by-state daily extremes Severe and noteworthy observations today
Hottest Coldest Wettest     Full list Windiest (km/h)     Full list
NSW: 30.8 at 0500 IVANHOE AERODROME AWS
VIC: 25.6 at 0530 MILDURA AIRPORT
TAS: 17.8 at 0500 FLINDERS ISLAND AIRPORT
SA: 32.7 at 0500 MOOMBA AIRPORT
WA: 28.8 at 0530 BROWSE ISLAND
NT: 29.0 at 0530 JERVOIS
QLD: 34.8 at 0500 BIRDSVILLE AIRPORT
NSW: 11.7 at 0533 THREDBO AWS
VIC: 8.6 at 0500 MOUNT BULLER
TAS: 4.1 at 0500 KUNANYI (MOUNT WELLINGTON PINNACLE)
SA: 14.1 at 0500 MOUNT GAMBIER AERO
WA: 6.6 at 0530 TUNNEY AG STATION
NT: 23.3 at 0500 BATCHELOR AIRPORT
QLD: 18.2 at 0500 APPLETHORPE
Highest short duration falls:
WILCANNIA AERODROME AWS NSW
6.0 in 9min to 0509
WALPEUP RESEARCH VIC
9.4 in 30min to 0500
Highest since 9am
LEIGH CREEK AIRPORT SA
58.2 to 0530
GABO ISLAND LIGHTHOUSE VIC
68 gusting 90/NNE at 0500
THREDBO AWS NSW
51 gusting 87/NNW at 0533
GREEN CAPE AWS NSW
64 gusting 83/ N at 0527

Weather, climate
and site news

The news on AWN is collected and written as I have time in between maintaining and developing the site and trying to lead a fairly normal life! As a one-person website, AWN does not have the resources of a fully-fledged newsroom, but there are reputable media that have systems that let you easily find current weather and climate stories if you know where to look. I've listed what I consider the best of these on AWN's Weather and Climate Media Reports page.

*Asterisked links may not be permalinks, i.e. they may cease to work or the content may change after a while. See note at bottom of page.

 

I am currently off doing a course that will help the quality of these postings, so sorry for the break in transmission. They should resume on Monday 23 January.

 

Friday 13 January 2017

Baking heat ahead of cold front sweeping southeastern states
Updated 14/1/17 16.45EDT with Parkes and Forbes information

Some record high temperatures have been recorded in NSW, QLD and SA ahead of a cold front moving into those states today. The northwest and far central west of NSW, as well as SW QLD and NE SA recorded maximum temperatures above 45° with the highest reports being 46.5° at Bourke in NSW, 46.3° at Moomba in SA and 44.7° at Birdsville in QLD. The Central West NSW towns of Parkes and Forbes set new records at their automatic weather stations, which have a history of about 20 years. The Parkes Elvis Festival must have seen fans sweating under their gear as the mercury rose to 44.1°, pipping the previous all-time record by just 0.1°. In neighbouring Forbes, the maximum rose to 45.5°, 0.3° above the previous all-time record.

Minimum temperatures in the 24 hours to 9am were similarly uncomfortable, with the same area reporting figures over 30°, with Oodnadatta the highest on 32.7° and Barcaldine in central western QLD setting a new record of 30.9° in a history of more than 50 years. Badgery's Creek in Sydney's west stewed for the fifth of the past six days with a run of maximum temperatures of 36.7, 35.7, 38.4, 42.8, 31.5 and 45.1. Eastern suburbs were saved by a healthy sea breeze, which did however increase the steamy humidity levels close to the coast in much of NSW.

Behind the change, the day was much cooler with Adelaide reporting a top of only 23.4. The change gave rainfalls of 30 to 35mm in SW SA, Ceduna's 36.2 the highest, before it slid to the SE. Between 09.00 and 23.00 today, much of VIC had falls between 5 and 10mm though the northwesterly stream gave heavy rain to the VIC and NSW alps bringing 49.0mm to Falls Creek and 52.6 to Perisher Valley. Much of the TAS North Coast received between 20 and 40mm over the same time, with Scottsdale in the NE receiving 41.6 and Mt Reid on the West Coast 48.0mm.

Wednesday 11 January 2017

Severe weather continues in Europe, but warming starting in the northern hemisphere

The centre of attention today has moved to Macedonia, where very low temperatures, snow stoms and hail have continued for a week now. As of 18.00EDT three deaths have been reported in this small country. Meteoalarm is giving Red Alerts for snow and ice in southern Germany, extremely low temperatures in northern Montenegro and southern Serbia, and a nasty mix of alerts for extreme cold, snow, ice, gales, heavy seas and avalanche risks continue across various parts of Europe. Croatia is experiencing high water levels on the Danube River.

While the cold winter weather has now contracted to southern Europe, and the Balkans in particular, Scandinavia is experiencing a sudden change to heat with temperatures up to 10 or 12° above normal, especially in the north. A similar sudden change is happening in North America where the eastern USA is experiencing temperatures 10 to 12° above average rising to 15° above average over far eastern Canada today.

You should also know:

  • A fierce storm moved down the lower Clarence valley of NSW early this evening, dumping 51.2mm on Yamba in the hour and a half to 2o.30. Farther up the valley, Grafton recorded only 9.0mm.
  • Massive rainfall last month following rain every month in the past year has greened Central Australia, as this report today from Old Man Plains Research Station, just south of Alice Springs, shows.
  • Temperatures in NSW topped out at 46.0° at Bourke today, while in the Sydney basin Badgery's Creek recorded 42.8°. These ABC News reports go through some of the fall-out, from trains running at reduced speeds to a warning issued after higher-than-normal levels of toxic ozone gas were reported.
  • Ausgrid has been restoring power to 23,000 premises in Sydney and on the Central Coast that lost power today as high demand caused blackouts. The cause is still unknown.
  • The Dakar Rally continues to be beset by bad weather as today's stage, which moves from Bolivia into Argentina, was beset by torrential rain that flooded rivers, caused landslides, delayed logistics and led to cancellation of Thursday's stage.
  • Tornadoes moved through the Otago region of South Island, New Zealand, this afternoon with trailers overturned and fences and windows damaged.
  • While in NZ, a drought considered to be the longest in the country's history at two years, has finished in the area from Marlborough, through Canterbury to parts of Otago.
  • More frequent severe weather due to climate warming has a major impact on hospitals, often ill-equipped to deal with it. This thoughtful article from The Conversation explores the details.
Tuesday 10 January 2017

Severe to extreme heatwave to continue in eastern Australia

Already hot conditions in the east of the continent are expected to get hotter as the week progresses, covering much of NSW, the southern half of QLD and adjoining parts of SA and the NT. A large area of high temperatures, both by day and by night, has been steadily moving east across the southern half of the continent since the middle of last week. It produced some record high minimum temperatures around Melbourne on Sunday, with Laverton equalling its highest minimum on record, 28.9°, in nearly 75 years. Moorabbin and Essendon weather stations, with nearly half-century histories, broke their all-time records by around one degree.

The worst days in the east this week will be Friday and Saturday when extreme conditions are expected in a broad band along the NSW/QLD border. Much of northern NSW and the southern third of QLD are expecting severe heat between Wednesday and Sunday. Maximum temperatures in the low to mid 40s will be commonplace in these areas, pushing as high as the high 40s in parts of the inland. Even coastal areas will be very hot where NW winds overcome seabreezes, particularly on Friday, with the added discomfort of high humidity and uncommonly warm nights. Sydney's western suburbs can expect temperatures over 40° on Wednesday and Friday, with seabreezes keeping the east of the city cooler provided they win the battle against strong NW winds.

There will be a short-lived reprieve in far eastern NSW on Thursday as a shallow cool change moves up the coast, but Friday looks like being the hottest day across a broad area of NSW and southern QLD, with fairly strong NW winds added to the heat bringing added fire danger. The BoM Heatwave Service maps* show the movement of the heatwave while this video from the BoM* explains the heatwave in more detail as well as the conditions leading up to it.

Heatwaves are one of the greatest weather killers, and they act silently. State health bodies are pleading with people to be aware of the signs of heat stress, and to know how to avoid it and what to do if it strikes. NSW Health has produced this essential collection of information pages.

Newsbits

Study gives details of the late December floods in Central Australia: The BoM has issued a Special Climate Statement (SCS) which covers both the major rain/flooding event that stretched from the WA Kimberley through the Centre to much of SA in late December. The tropical air brought south by the slow-moving system also gave exceptional, almost unprecedented levels of precipitable water and humidity to SE Australia, more characteristic of Darwin at the peak of the wet season than of southern Australia. The southeast saw record heat, especially at nights, and flash flooding in SA and VIC, especially around Melbourne. The SCS - Humidity, heavy
rain and heat in central and southern Australia
is here.

Australian monsoon to ease: The BoM's Weekly Tropical Climate Note describes the shift of monsoonal activity in northern Australia from the NT to the Gulf of Carpentaria and Far North Queensland due to the development of two tropical lows in the region. These, and the monsoon, are expected to weaken during the next week. The El Niño-Southern Oscillation (ENSO) remains neutral and is expected to stay this way through summer.

Heavy rain and floods in Thailand's dry season: The Weekly Tropical Climate Note also gives interesting detail and an analysis of the recent heavy rain and flooding event in Thailand. The period from December to February in Thailand typically sees rainfall of around 60mm per month, but up to 600mm has fallen in places during the past week. Nearly one million people have been affected, there has been widespread dislocation and multiple fatalities. The Note gives a background on why it happened.

OK, what does carbon dioxide look like?: We know it's there, but how does it move and change globally through the seasons? Where are the areas of greatest concentration? Using observations from NASA's Orbiting Carbon Observatory (OCO-2) satellite, a new NASA supercomputer project has created a sophisticated 3-D Earth system model. In the video with this article from NASA, you can see CO2 through the full depth of the atmosphere around the globe through a year reduced to 78 seconds. Who is emitting it, where does it go, how does it diffuse, how much is Australia affected?

Older items are archived and indexed in the Daily Weather Summary for the relevant date.

 

    

* I link to stories and resources frequently - why re-do what has already been well done? However, a regular problem with the Internet is "link rot". There are two main causes: either the link has ceased to exist, in which case you get the dreaded "Error 404 page not found" or the link exists but the information on it has changed. Where possible, I use "permalinks", URLs which I know are likely not to change in the foreseeable future because the organisation, such as the ABC, has developed a stable link structure. Where I think a link may suffer link rot, I mark it with an asterisk but be aware that there's no guarantee unasterisked links won't evaporate given time.

Unless otherwise indicated, data and charts are provided by the

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