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Time site last updated: UTC:13:17
09/12/16
WST:21:17
09/12/16
CST:22:47
09/12/16
EST:23:17
09/12/16
CDT:23:47
09/12/16
EDT:00:17
10/12/16

Latest weather extremes prepared 0014 EDT, Saturday, 10 December 2016
State-by-state daily extremes Severe and noteworthy observations today
Hottest Coldest Wettest     Full list Windiest (km/h)     Full list
NSW: 21.7 at 0000 NORFOLK ISLAND AERO
VIC: 14.9 at 0000 MILDURA AIRPORT
TAS: 12.6 at 0000 FLINDERS ISLAND AIRPORT
SA: 22.1 at 0000 MOOMBA AIRPORT
WA: 35.1 at 0000 MOUNT MAGNET AERO
NT: 33.8 at 0000 VICTORIA RIVER DOWNS
QLD: 33.6 at 0000 BURKETOWN AIRPORT
NSW: -0.1 at 0000 PERISHER VALLEY AWS
VIC: 0.3 at 0000 MOUNT BULLER
TAS: 0.7 at 0000 KUNANYI (MOUNT WELLINGTON PINNACLE)
SA: 6.4 at 0000 MOUNT LOFTY
WA: 15.7 at 0000 EUCLA
NT: 19.0 at 0000 ALICE SPRINGS AIRPORT
QLD: 13.5 at 0000 BRISBANE WEST WELLCAMP AIRPORT
Highest short duration falls:
FITZROY CROSSING AERO WA
5.6 in 30min to 0000
WILLIAMSON QLD
1.4 in 30min to 0000
Highest since 9am
HALLS CREEK AIRPORT WA
32.4 to 0000
GLADSTONE AIRPORT QLD
27.2 to 0000
WILSONS PROMONTORY LIGHTHOUSE VIC
59 gusting 77/WSW at 0000
MAATSUYKER ISLAND LIGHTHOUSE TAS
66 gusting 74/ NW at 0000
HOGAN ISLAND TAS
57 gusting 68/WSW at 0000
GABO ISLAND LIGHTHOUSE VIC
51 gusting 64/WSW at 0000

Weather, climate
and site news

28 October 2016. 2016 State of the Climate Report details increasing impacts of global warming on Australia

The fourth biennial State of the Climate report by the Bureau of Meteorology and the CSIRO was released yesterday. It shows the accelerating impacts of global warming on our country and paints a worrying picture of the future as those impacts bite even harder. It also shows that levels of severity vary significantly across different areas of Australia.

Temperature averaged across the country has risen by around 1°C since reliable records began in 1910, but about half the country has experienced rises above 1° to over 1.5° while a corresponding area is below 1°. The length, duration and intensity of extreme heatwaves has increased across large areas, bringing with them more bushfires and a longer bushfire season, especially since the 1970s. Both heatwaves and bushfires are forecast to increase, with fires worsening significantly in southern and eastern Australia.

May to July rainfall in southwestern Australia has dropped nearly 20% since the 1970s, while there has been a steady decline of over 10% in April to October rainfall in southeastern Australia during the past 20 years. These periods coincide with growing seasons in both areas, and unfortunately rain is projected to continue to decline and drought periods to lengthen in these areas. Northern Australia, conversely, is showing increased rain in some areas since 1970.

Seas and oceans are absorbing the lion's share of greenhouse gas heat on the planet and consequently expanding, raising sea levels and causing more coastal erosion during storm surges and high tides. Our seas are becoming more acid, progressively impacting on marine ecosystems. At this stage, species that produce calcium carbonate, such as corals and shellfish, are most at risk. Rises in sea levels and acidification are also projected to increase.

The BoM/CSIRO State of the Climate Report is presented here on the Bureau's website with information spread across several tabs and in three short videos. You can also download the full 23-page report which makes prolific use of graphs and maps to convey a lot of detail very simply.

If you're looking for even more substantial information resulting from this BoM/CSIRO study, go to the Climate Change in Australia website. The Regional Climate Change Explorer here lets you drill down to smaller areas called sub-clusters. Going into even more detail is the Data Explorer, which presents climate change and forecast data at basic, intermediate and advanced levels. Use the dropdown menu under the Explore Data tab to get to it. And there's help and training in using and understanding the data if you feel you're getting out of your depth.

21 October 2016. Supercell thunderstorms cut swath from Parkes to Young as front hits southern states

notableNSW, VIC, WA

A cluster of supercell thunderstorms brought torrential rain, large hail, violent winds and a suspected tornado along a band from Forbes and Parkes to the Young area this evening. The storms occurred in the zone ahead of a strong cold front as it swept across NSW and Victoria.

The greatest damage was reported from Parkes soon after 7pm where either a tornado or powerful downburst or microburst lifted roofs, felled trees and powerlines, damaged cars and blacked out a large part of the town. Hail up to 3cm diameter was reported. Soon after, Cowra had a deluge when 31mm of rain fell on the town in just over an hour. At 8.45pm another supercell brought golf to tennis ball (4-6cm diameter) sized hail to Young causing car, house and tree damage. Earlier in the day soon after 2pm, Bourke Airport reported an October record 89km/h wind gust as storms swept through, with Trangie reporting a 94km/h gust two hours later. A report and photos of the damage are on higginsstormchasing.com.

The front swept across Victoria during the early hours of the morning bringing wind gusts of up to 100km/h and above. ABC News reported numerous downed trees and blocked roads with thousands of properties left without power. Snow flurries and wintry hail showers were reported in the Dandenongs, around Mt Donna Buang and at Mt Macedon in strong southerly winds. The highest recorded wind gust was 113km/h at Mt Gellibrand near Colac, another October record. Melbourne Airport recorded a gust of 100km/h and experienced its highest average 24-hour wind speed on record - 48.0km/h - in 17 years of record.

In the wake of the cold front, parts of southern WA reported record or near-record low October temperatures this morning under the following high pressure system. The Great Southern was particularly affected, with record minima reported at Lake Grace 0.4° and Katanning -0.7°. Farther east at Norseman the mercury plunged to a record -1.9°.

13 October 2016. Bureau issues Special Climate Statement on a record wet September and winter

The Bureau of Meteorology has issued one of its detailed Special Climate Statements on the record rainfall of September with additional sections on the wet period that extended from May to September, the flooding that resulted and the broadscale causes of this rare event.

Seven separate rain events led to the wettest September on record in NSW and the NT, and the second to fourth wettest in VIC, QLD and SA respectively. The last of these events caused a total blackout in SA as storm-force winds brought down electricity pilons and produced the lowest pressure ever recorded in the state at a standard observation time of 972.7hPa at Neptune Island at 3am on 29 September. An earlier event gave Uraidla 101.4mm to 9am on 15 September, the highest September daily rainfall on record in the Adelaide region.

A record negative Indian Ocean Dipole caused by unusually warm waters between WA and Indonesia produced Australia's wettest May to September period in the 117-year history of reliable records. The national 5-month average of 213.24mm easily trumped the previous record of 191.87 set in 1978. It was also the wettest May to September period on record for QLD, NSW, VIC, TAS and SA. The heavy September rain on already sodden catchments produced moderate to major flooding in parts of all five states.

You can get the Special Climate Statement here.

11 October 2016. La Niña strengthens while IOD eases

The latest ENSO Wrap-Up and the updated Climate Model Summary released today by the BoM point to indications that the tropical Pacific Ocean is nudging closer to La Niña thresholds. Sea surface temperatures have cooled over the past fortnight dropping the latest weekly NINO3.4 (central tropical Pacific) value to -0.6°, the lowest since February 2012 at the end of the 2010-12 La Niña. The majority of international climate models indicate that neutral levels will persist through to the end of this summer, but continued warmer-than-average sea surface temperatures north and east of Australia also indicate some La Niña-like impacts are possible even if a full La Niña doesn't develop.

Over in the west, negative Indian Ocean Dipole values have eased over the past fortnight, mostly due to ocean warming off Africa. However, the Bureau says that "Waters off Indonesia remain very warm, and were second warmest on record for September. Models indicate the IOD will return to neutral levels by the end of spring." That would result in the influence of the IOD on Australian rainfall possibly lessening in the coming months.

11 October 2016. Mackay Radar goes full-time

Mackay Radar, which covers rainfall in a large slice of the QLD Central Coast, has become a dedicated weather watch radar. Previously, it was in use for upper air wind measurement for about two in every six hours, but the installation of an automatic wind profiler at Mackay Turf Club now provides real-time upper wind measurements for pilots and forecasters, freeing up the radar for full-time rain observation. It will be good news for the many sugar plantation, mining and marine users in this busy area.

The radar gives coverage out to about Home Hill to the NW, Yeppoon to the SE and Clermont to the SW, though because of the angle of its beam it usually only covers coastal showers as far as Bowen to St Lawrence. Bureau of Meteorogy Acting Queensland Regional Director Bruce Gunn said, "These improvements in radar coverage have been prioritised for delivery ahead of the northern wet season, when there is an increased risk of thunderstorms and tropical cyclone activity in Queensland."

10 October 2016. More active tropical cyclone season for 2016-17

Following a record low number of tropical cyclones in the Australian region last year, the Bureau of Meteorology's forecast for the 2016-17 season issued today is for there to be a 67% chance of it being above the 1967-68 to 2015-16 average.

The tropical cyclone season normally runs from November to April with conditions such as the current La Niña setup promoting more and earlier cyclone formation. Sea surface temperatures in the important cyclone-forming region to Australia's north and east are also currently 1-2° above average. On average, 11 cyclones form in the Australian region each year with four crossing the coast.

Full details, including a break-down by region and a video, are available on the Bureau's site here.

9 October 2016. BoM smartphone app now available

The Bureau of Meteorology has released a smartphone app for Android and Apple devices which is available through the App Store and Google Play. The Bureau's mobile phone site, tailored for small mobile phone screens, continues to operate giving precis forecasts and warnings for anywhere in Australia as well as the nearest observations and rainfall radar. The full-sized website, www.bom.gov.au, also continues.

The new app, however, gives considerably more detail than the mobile site, taking advantage of larger, clearer smartphone screens. The app includes forecasts in 3-hourly time blocks for the next 24 hours and detailed forecasts for the week ahead. There's a full list of what the app provides here, with a slick video showing the look and feel of the app. A FAQ is here.

6 October 2016. Drought virtually eliminated across Australia

After a winter that gave above average to record rainfall across most of the nation apart from the southwest of WA and the far north, widespread heavy September rainfall gave the NT and all states except WA their wettest or second-wettest May to September period on record. The Bureau of Meteorology's Drought Statement, issued today, shows Australia is clear of significant rainfall deficiencies in the 6-month timeframe. Lower layer soil moisture, between 10cm and 1m deep, is above average across most of the country. It is at record levels in large parts of NSW, QLD and the NT as those cursing bogged tractors or admiring Irish green countryside everywhere will have guessed.

5 October 2016. The wettest and nearly the hottest dry season ends in the north

Northern Australia, which is all of WA, the NT and QLD north of an east-west line along the NT/SA border, had its wettest dry season since reliable records began in 1900. Rainfall averaged across the area was not only the wettest for the whole season, but also for every month from May to September, with the last month's rain nearly five times the average. The rain helped to end a long drought in SW and central QLD.

Temperatures, too, were way above average. The mean temperature was the second warmest since reliable records began in 1910 while overnight minima tied with 1973 for record warmth.

For more information on the causes of the wet, hot weather and a look at the future, look at the current Weekly Tropical Note from the Bureau of Meteorology.

Unless otherwise indicated, data and charts are provided by the

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