Showing posts with label weather. Show all posts
Showing posts with label weather. Show all posts

Thursday, 13 February 2020

Tropical Cyclone Uesi predicted to cause damaging seas along Australia's east coast as it weakens


Tropical Cyclone Uesi at Category Two level, Monday 10 February 2020


The Tropical Cyclone Warning Centre Port Vila, Vanuatu, has this particular cyclone tracking south west towards south-east Qld and the NSW North Coast as it weakens.

Weatherzone reported on 10 February 2020 that:

At this stage, there is a fair bit of uncertainty around the movement of this system from Thursday onwards, with a range of plausible scenarios. 
Some forecast models suggest that Uesi will move towards the southwest on Thursday and Friday, which would allow it to move closer to Australia's east coast towards the end of the week. If this happens, the remnants of Tropical Cyclone Uesi, most likely in the form of an extra-tropical cyclone, could cause direct impacts in eastern NSW or southeast Queensland. These impacts could include large and dangerous surf, strong winds and heavy rain. It's worth pointing out that dangerous wind and rain would only occur if the system gets close enough to the coast, while powerful surf can reach Australia even if the system stays well offshore.


The Weekly Times, 11 February 2020

According to the Fiji Meteorological Service, which is tracking Uesi, its current route should take it in a south-westerly direction towards the coasts of both New South Wales and Queensland. It could enter Australian waters as early as Thursday.

The Australian Bureau of Meteorology also says there is a moderate chance the cyclone could turn southwest towards Australia on Thursday — giving odds of between 20%-50% the storm will enter the Coral Sea’s eastern region.

Issued at 2:37 am AEDT Thursday 13 February 2020. 
Refer to Tropical Cyclone Advice Number 7.

ABC News, 12 February 2020:

Tropical Cyclone Uesi could cause more havoc across the NSW coastline later this week, bringing swells of up to 5 metres. 

The news comes as the clean-up continues after the weekend's wild weather. 

The category three cyclone, which is passing north-east of New Caledonia, will track south-west towards the Tasman Sea and could cause increased swells, wind and rainfall as early as Thursday. 

ABC News weather journalist Graham Creed said the cyclone was expected to come closest to the coast on Friday and Saturday. 

"This may produce large swells, which combined with king tides may cause issues for beach erosion, as well as prolong the potential for locally heavy rainfall in showers and thunderstorms," he said....

The forecast at this stage is for swells of about 2 to 3 metres starting on the north NSW coast on Thursday and increasing to 3 to 5 metres on Friday....

By 8pm this evening, Thursday 13 February Cyclone Uesi will have dropped to a tropical low (while possibly maintaining an intensity equivilant to a Category 2 tropical cyclone) and is expected to sit less than 600km to the east of Tweed Heads as the crow flies.

At 2am Friday 14 February 2020 the tropical low is expected to be sitting further south less than 600km to the east of Moonee Beach.

Late Friday night the low will continue to track south before veering further away from the NSW coastline on Saturday.

SEE BOM ADVICE FOR UPDATES AT 
http://www.bom.gov.au/products/IDQ65231.shtml

*Image from Weatherzone, tracking map from the Australian Bureau of Meteorology & animated satellite image from NOAA Environmental Visualization Laboratory

Wednesday, 23 October 2019

The utltra-absurd among the many politically absurd One Nation members is at it again.......


The Canberra Times, 21 October 2019:

The Bureau of Meteorology has again been accused by a One Nation senator of changing its data so it fits in with the narrative of climate change extremists.



The head of Australia's weather agency has fended off questions from One Nation senator Malcolm Roberts suggesting the bureau has changed data to fit a climate change narrative.
Senator Roberts has taken issue with a graph which he says can no longer be accessed on the Bureau of Meteorology's website, which had outlined the number of "very hot days" from 1920 to 2015.
"Firstly, I reject the premise of your overarching question," he said.

"The Bureau of Meteorology simply reports on the data which it observes.

"Integrity of our data is of the highest order and I stand absolutely, 100 per cent behind it."
It is possible Mr. Roberts has seen a graph based on BOM data but created by another agency or individual. A number of these graphs do exist on the Internet.


Thursday, 17 October 2019

The real reasons behind the push to dam and divert water from the Clarence River catchment


Whenever local government areas within the Murray-Darling Basin decide to renew their almost perpetual lobbying of federal and state governments for consent to dam and divert one or more rivers within the Clarence River catchment they usually have a hidden agenda accompanying their public call for fresh water for inland towns during times of water scarcity.
It has never been about needing water for towns which might run out of water by late 2020. Any new dam couldn’t even be ‘shovel ready’ in less than two to three years, while rushing construction would take a similar time period to complete and filling a dam would take more than three years on top of that – if it could be achieved at all in an Australian climate which has been drying for the last sixty years.
What these councils are really seeking is the means to grow their own local businesses and expand their own regional economies at the expense of Clarence Valley and Coffs Harbour City current and future businesses and regional economies.
One of the mayors openly states that “water is the new currency” - echoing that other sentiment doing the rounds, ‘water is the new gold’.
Take these latest water raiding schemes……….
1. MARYLAND RIVER DAM AND DIVERSION SCHEME FOR THE BENEFIT OF ONE NSW AND THREE QLD LOCAL GOVERNMENT AREAS
According to Daily News in Warwick Qld, Southern Downs Council has a wish list for growth; Councillor Marika McNichol said the council had a wish list of significant infrastructure projects that would shape, steer and secure the region’s future.“This is an ambitious list of projects, but also a list of essential infrastructure projects that will benefit our region and build a sustainable future for the Southern Downs,” Cr McNichol said.“Council has a strong long-term vision for the region which involves major infrastructure projects.”
On its own website this council stated; “Southern Downs Regional Mayor, Tracy Dobie said a number of exciting projects in the Southern Downs were due to commence or be completed, creating employment opportunities, encouraging population growth and stimulating strong economic activity,”
One of those proposed major infrastructure projects to allow economic expansion in this particular local government areas is a “Pipeline diversion of water from the Clarence River in NSW to Tenterfield, Southern Downs, Western Downs and Toowoomba”. This proposal is being submitted to Infrastruture Australia seeking funding to progress the interbasin-interstate water transfer scheme.

Access to water is seen as a key economic driver by Western Downs Regional Council. This includes being a driver of industry and business development as well as optimising tourism growth in the local government area.

Toowoomba Regional Council Mayor Paul Antonio told a journalist that; water is the limiting factor in population growth and food production in this area”. His letter of support for the application to Infrastructure Australia for a dam in the Clarence River catchment reads in part; As chair of Darling Downs South West Queensland Council of Mayors … I write to give the strongest of support to your council’s submission to the Australian Infrastructure Audit regarding long-term water security on the Darling Downs and NSW Border Ranges.”

Tenterfield Shire Council’s mayor told The Daily Examiner in Grafton NSW; “I have no problem supporting populations to support industry, but you cannot do it without infrastructure to secure water. These towns need to be supported, and especially where they are looking to expand. (Towns like) Warwick and Toowoomba should have had adequate water supply years ago and now we are playing catch up.” [my yellow highlighting]

Tenterfield Shire Council as part of the Northern New England High Country Regional Economic Development Strategy 2018-2022 supports the position that; “There is potential to dam both the Mole River in the western part of the Region and possibly one or more of the headwater tributaries of the Clarence River for irrigation water and the generation of hydroelectricity.”

Tenterfield’s Mole River proposal was tentatively costed sometime in the 1990s on the basis that private capital would build this dam and lease it back to either local or state government. The current proposal for a Mole River dam (20-40 per cent smaller than the original proposed water storage) is an initial 50/50 split between state and federal government.

2. ABERFOYLE RIVER DAM AND DIVERSION SCHEME TO BENEFIT GWYDIR SHIRE COUNCIL, GWYDIR RIVER AND COPETON DAM, NSW

The NSW Berejiklian Coalition Government’s State Infrastructure Strategy 2018-2038 points to a need to Identify investment options in the priority catchments of Gwydir and Macquarie”.

Gwydir Shire Council in its Gwydir Shire Economic Development Strategy 2017-2020 states an aim to; Manage water resources for a growing economy and environmental sustainability” as well as to improve/expand the Shire’s product base which includes the tourism potential of the Gwydir River and Copeton Dam.

The river and dam are seen as part of providing a Strong basis for growing the tourism sector and building visitation to the Shire’s towns and villages” - as well as being seen as “lifestyle advantages of the Shire.”

The development strategy also sees “access to plentiful water” as a prerequisite to growing local businesses and establishing new ones.

Seeing water as a mere commodity these Murray-Darling Basin councils and the federal government are pressuring the NSW Berejiklian Coalition Government to such a degree that it is now considering altering planning and water legislation to allow NSW Water to have planning control over dam building and also allowing environmental safeguards to be overridden – in particular removing environmental/biodiversity assessments of proposed dam sites and potentially commencing construction before a cost-benefit analysis has been completed.

Sunday, 6 October 2019

Grafton experienced more hot days in past 30 years



Grafton's average monthly rainfall 1959 to 2018:



Grafton's average water balance after the evaporation rate is accounted for:

Graphs from http://www.bom.gov.au/climate/climate-guides/

It should be noted that longterm averages are a crude measurement tool and do not always reflect conditions experienced in specific years.


Thursday, 18 April 2019

Food crises will affect tens of millions of people across the world this year, researchers warn



Reuters, 2 April 2019:

ROME (Thomson Reuters Foundation) - Food crises will affect tens of millions of people across the world this year, researchers warned on Tuesday, after war, extreme weather and economic woes in 2018 left more than 113 million in dire need of help.

Conflict and insecurity were responsible for the desperate situation faced by 74 million people, or two-thirds of those affected, in 2018, said the Global Network against Food Crises in its annual report.

The Network’s members include the United Nations’ Food aand Agriculture Organization (FAO) and World Food Programme, and the European Union.

Analyzing 53 countries, it uses a five-phase scale with the third level classified as crisis, fourth as emergency and fifth as famine/catastrophe.

Luca Russo, FAO’s senior food crises analyst, warned that millions more are now at risk of reaching level three and above.

“The 113 million is what we call the tip of the iceberg. If you look at the numbers further down, you have people who are not food insecure but they are on the verge,” Russo told the Thomson Reuters Foundation.

These people, a further 143 million, are “so fragile that it just takes a bit of a drought” for them to fall into food crisis, he said.

“Unless we work substantially on these people and remove some of the drivers that can bring them to a worse situation, the overall numbers are likely to increase,” Russo added.

Of countries that suffered food crises in 2018, the worst affected was Yemen, where nearly 16 million people needed urgent food aid after four years of war, followed by the Democratic Republic of Congo at 13 million and Afghanistan at 10.6 million.....

Wednesday, 3 April 2019

Hottest March on record in Australia and hottest start to the year



ABC News, 1 April 2019:



Blair Trewin, senior climatologist at the Bureau of Meteorology (BOM), said March was a continuation of what we saw over summer in a lot of ways.

Not only was it the hottest March, but it has also been the hottest start to the year on record. By a lot.

"It's come in about 2.2 degrees above the long term for the first quarter of the year," Dr Trewin said.

"That's nearly a degree hotter than the previous hottest first quarter of the year.

"We've had the hottest January, we've had the hottest March and February was also in the top five."

Nearly a degree is a very large margin to break a record by.

"Even for an individual month that would be a very significant margin, but to be breaking a three-month-period record by nearly a degree is something which we would see very rarely, if ever in a continent the size of Australia," Dr Trewin said....


It may feel like the "hottest on record" headline is a constant these days but Dr Trewin said it was still not exactly normal.

"We're still getting the occasional cool months but the frequency of record warm months and seasons has gone up quite substantially in the last decade or so with the background long-term warming," he said.

"Whilst we've seen a particularly extreme few months, the background warming trend we see in Australia, as we do globally, is in the order of 0.1 to 0.2 of a degree per decade.


"Projections are that that's expected to continue at least at that rate," he said.
_____________________________________________________________
Key points:
o   March 2019 was the warmest on record for mean, minimum and maximum temperatures in Australia
o   Rainfall was below average through the centre of the country but well above average where cyclones hit
o   Outlook for the next three months suggests continued above-average temperatures
_____________________________________________________________

Tuesday, 28 August 2018

Australia's water evaporation levels are running at record rates in 2018


The Sydney Morning Herald, 22 August 2018:

Australia's evaporation levels are running at record rates, especially across eastern states, increasing the misery for drought-hit farmers and raising bushfire risks as the mercury starts to climb.

While rainfall deficiencies have drawn much attention, stronger-than-usual winds, abnormally sunny days and low humidity have combined to push up evaporation levels, Bureau of Meteorology data shows.

Across the nation, evaporation last month averaged 145.21 millimetres, well above the 128.6 mm typical for July, and the most on record for data going back to 1975, said Karl Braganza, head of climate monitoring at the bureau.

The national tally beat the previous record in 2002. On a regional level, the evaporation rate was the highest on record for Victoria, and also smashed previous records for eastern Australia as a whole.

July pan evaporation for Eastern Australia

1975-2018



If you live in a NSW rural/regional area or an outer metropolitan suburb with thick tree cover.....


Now is the time to make or update your bushfire survival plan.

Because the fires have come early this year and intermittant rainfall is unlikely to ease the threat for long.


http://www.bom.gov.au/climate/rainfall/

Crikey.com.au, 16 August 2018:

NSW has declared its earliest total fire ban on record, with hundreds of South Coast residents forced to flee their homes amidst a massive blaze.

The Sydney Morning Herald reports that fire crews battled at least 83 fires across the state, following stronger-than-expected winds, creating fire bans that beat the previous record by two weeks. Compounding problems was the fact that, according to The Daily Telegraph ($), two huge water bombers were not in action because they had not yet arrived from the US ahead of Australia’s summer season.


Australian Government Bureau of Meteorology
New South Wales

Fire Weather Warning for the Greater Hunter, Greater Sydney Region and Illawarra/Shoalhaven fire areas.

Issued at 10:37 am EST on Wednesday 15 August 2018.

Weather Situation
Warm, dry and windy conditions over southeast NSW today ahead of a cold front,
which will pass to the south of the state overnight.

For the rest of Wednesday 15 August:

Severe Fire Danger is forecast for the following fire areas:
Greater Hunter, Greater Sydney Region and Illawarra/Shoalhaven

The NSW Rural Fire Service advises you to:
- Action your Bushfire Survival Plan now.
- Monitor the fire and weather situation through your local radio station,
www.rfs.nsw.gov.au and www.bom.gov.au.
- Call 000 (Triple Zero) in an emergency.

The Rural Fire Service advises that if you are in an area of Severe Fire Danger:
- If you plan to leave finalise your options and leave early on the day
- Only stay if your home is well prepared and you can actively defend it
- Prepare for the emotional, mental and physical impact of defending your
property - if in doubt, leave.
For information on preparing for bushfires go to www.rfs.nsw.gov.au.

No further warnings will be issued for this event, but the situation will
continue to be monitored and further warnings issued if necessary.

For up-to-date information for your local area see NSW Rural Fire Service’s  Fire Danger Ratings and Total Fire Bans and Fires Near Me.


Friday, 20 July 2018

Too warm, too dry as Winter draws closer to Spring in Australia 2018



Warmer days and nights favoured for August–October

August to October days and nights are likely to be warmer than average for most of the country, with high chances (greater than 80%) in eastern Victoria and NSW, and southern Tasmania.

Days and nights in August are likely to be warmer than average for most of Australia, with high chances (greater than 80%) of warmer days in the southeast.

Historical accuracy for August–October maximum temperatures is moderate for eastern and northern parts of Australia, as well as southern WA. Elsewhere, accuracy is low to very low. Historical accuracy for minimum temperatures is moderate for the northern half of Australia, SA, and Tasmania, but low to very low elsewhere.

Temperature - The chance of above median maximum temperature for August to October



Drier than average August–October likely in northeast and southeast mainland
August to October is likely to be drier than average in Victoria, NSW, southeast SA and northeast Queensland

The August outlook shows most of Victoria, NSW and Queensland are likely to be drier than average.

Historical outlook accuracy for August to October is moderate over most of the country, except for interior WA, where accuracy is low to very low.

Rainfall - Totals that have a 75% chance of occurring for August to October

Drought

June rainfall was below average for most of Australia, and very much below average for parts of the east coast

The start of the southern wet season has been drier than average

Rainfall deficiencies persist in both the east and west of the country, increasing in the east at the 6- and 15-month timescales, and along the west coast at the 15-month timescale

Lower-layer soil moisture was below average for June across most of New South Wales, the southern half of Queensland, South Australia, the Northern Territory, the Kimberley and the south of Western Australia

Soil Moisture

Soil moisture in the lower layer (from 10 cm to 100 cm deep) for June decreased over eastern Australia, and increased over parts of northwest Western Australia following above average rainfall for June.

Lower-layer soil moisture was below average for the Kimberley and southern Western Australia away from the west coast, most of South Australia and the Northern Territory, New South Wales and eastern Victoria, southern and eastern Queensland south of a line between Birdsville and Townsville, and along the coastal fringe of eastern Cape York Peninsula.

Map of lower level soil moisture for the previous month

NSW Dept. of Primary Industries, NSW State Seasonal Update - June 2018. Click on map to enlarge:



Tweed, Richmond, Kyogle, Lismore, Byron Bay, Ballina, Clarence Valley local government areas, as at 15 July 2018 according to Combined Drought Indicator:


The entire Northern Rivers region is considered drought affected.