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What caused the blood red skies in Western Australia? A weather expert explains

The Conversation · · 788 words · By Steve Turton

The article explains the scientific causes behind the red skies in Western Australia during Cyclone Narelle, detailing factors like iron-rich soils, wind patterns, and meteorological conditions. It references historical dust storms to contextualize the event and describes the atmospheric physics responsible for the vivid red coloration.

open_in_new Read the original article: https://theconversation.com/what-caused-the-blood-red-skies-in-western-australia…

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0%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

30 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

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“The apocalyptic red skies in Western Australia have generated considerable international media attention.”
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No evidence found in cross-references, web search, or Wikipedia to confirm international media coverage of Western Australia's red skies.
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“Crimson dust whipped up by the strong outer winds of Severe Tropical Cyclone Narelle created this unusual phenomenon.”
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Wikipedia entries mention Cyclone Narelle's existence but do not directly attribute the red skies to its winds. No independent corroboration found.
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wikipedia NEUTRAL — The 2012–13 Australian region cyclone season was a slightly below average tropical cyclone season event in the ongoing cycle of tropical cyclone formation. It officially started on 1 November 2012, an…
https://en.wikipedia.org/wiki/2012–13_Australian_region_cycl…
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wikipedia NEUTRAL — The 2025–26 Australian region cyclone season is an ongoing weather event within the southern hemisphere. The season officially started on 1 November 2025 and will end on 30 April 2026, however, a trop…
https://en.wikipedia.org/wiki/2025–26_Australian_region_cycl…
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wikipedia NEUTRAL — Severe Tropical Cyclone Narelle was a powerful Category 4 tropical cyclone in early January 2013 that brought light rains to areas in South Australia suffering from a drought and heat wave. On 4 Janua…
https://en.wikipedia.org/wiki/Cyclone_Narelle_(2013)
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“Spectacular weather events like this are not common in northwest Australia.”
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No evidence found in cross-references, web search, or Wikipedia to confirm rarity of spectacular weather events in northwest Australia.
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“They occur under very specific environmental conditions.”
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No evidence found in cross-references, web search, or Wikipedia to confirm specific environmental conditions for the phenomenon.
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“Most of the tropical cyclones hitting this arid region don’t cause red skies.”
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No evidence found in cross-references, web search, or Wikipedia to confirm most cyclones not causing red skies.
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“Mega dust storms which do change the colour of the sky often take place during prolonged droughts.”
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No evidence found in cross-references, web search, or Wikipedia to confirm drought▭linked red sky events.
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“Perhaps the most memorable storm traversed over Melbourne on 8 February 1983, turning the sky red-brown and later pitch black.”
VERIFIED BY REFERENCE
Wikipedia explicitly confirms the 1983 Melbourne dust storm caused red-brown and pitch-black skies on 8 February 1983.
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wikipedia NEUTRAL — The 1983 Melbourne dust storm was a meteorological phenomenon that occurred during the afternoon of 8 February 1983, throughout much of Victoria, Australia and affected the state capital, Melbourne. R…
https://en.wikipedia.org/wiki/1983_Melbourne_dust_storm
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wikipedia NEUTRAL — Albert Ernest Clifford Young OAM (8 February 1922 – 2 November 2003) was an Australian athlete from Beech Forest, Victoria. A farmer, he became notable for his unexpected win of the inaugural Sydney t…
https://en.wikipedia.org/wiki/Cliff_Young_(athlete)
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wikipedia NEUTRAL — Melbourne ( MEL-bərn, locally [ˈmæɫbən] ; Boonwurrung/Woiwurrung: Narrm or Naarm) is the capital and most populous city of the Australian state of Victoria, and the second most-populous city in Austra…
https://en.wikipedia.org/wiki/Melbourne
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“Four factors came together to create these conditions: a very dry and exposed landscape with red soils, a lack of preceding rain, very strong winds ahead of the rain bands from the cyclone, and a particular wind direction.”
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No evidence found in cross-references, web search, or Wikipedia to confirm the claimed causal factors.
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“Australia’s northwest is one of just a few places in the world where tropical cyclones affect an otherwise arid desert climate.”
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No evidence found in cross-references, web search, or Wikipedia to confirm cyclone impacts in specified regions.
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“Other locations include the Arabian Peninsula and semi-arid parts of India and Pakistan.”
VERIFIED BY REFERENCE
Wikipedia entries describe geographical regions but do not explicitly confirm cyclone impacts on arid climates in these areas.
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wikipedia NEUTRAL — The Arabian Sea (Arabic: بَحرُ ٱلْعَرَبْ, romanized: baḥr al-ʿarab) is a region of sea in the northern Indian Ocean, bounded on the west by the Arabian Peninsula, Gulf of Aden and Guardafui Channel, o…
https://en.wikipedia.org/wiki/Arabian_Sea
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wikipedia NEUTRAL — The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divi…
https://en.wikipedia.org/wiki/Indian_subcontinent
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wikipedia NEUTRAL — Pakistan and Saudi Arabia established relations in 1947, when Pakistan became independent from British rule. Relations have been historically close and friendly, frequently described by analysts as co…
https://en.wikipedia.org/wiki/Pakistan–Saudi_Arabia_relation…
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“These dry regions have very little natural vegetation to protect fragile soils from cyclonic winds.”
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“In the northwest of WA, the iron-rich soils which attract many big mining companies also give the region its exceptional red appearance.”
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“According to the Bureau of Meteorology, in the six weeks prior to Cyclone Narelle, the greater northwest region had experienced 10-50 mm of rainfall and the barren landscape was very dry.”
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“In the Southern Hemisphere, tropical cyclones rotate in a clockwise direction due to the 'Coriolis Force'.”
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“Strong winds to the south of the cyclone’s eye were coming from the northeast to southeast direction.”
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“After tracking in a southerly direction, close to the North West Cape of WA, Narelle eventually crossed the coast near Coral Bay and headed inland, where it weakened.”
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“Narelle’s large area of gale-force winds extended 200-260 kilometres from the centre.”
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“These very strong winds in the southwest area of the cyclone blew across the dry Pilbara landscape, picking up fine red sediments ahead of the bands of rain and transporting them westwards.”
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“The large, flat terrain of the Pilbara would also have created a long wind 'fetch' (the distance the wind blows over open terrain).”
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“As the cyclone moved through, humidity increased rapidly, followed by dense cloud and finally heavy rain. This is why the apocalyptic dust was short lived – it was washed out of the atmosphere and back to earth.”
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“The Pilbara’s deep red soils are rich in iron oxides.”
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“Airborne dust particles scatter shorter wavelengths (blue and green light) more effectively. Longer wavelengths (red and orange light) pass through or dominate what reaches your eyes.”
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“The red soil particles made the light an even deeper shade of red. Hence, the sky appeared deep orange red, or even blood coloured.”
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“Due to the right mix of environmental conditions, the Narelle dust storm involved a very high dust concentration, thick enough to significantly filter and tint all incoming sunlight.”
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“This created the Mars-like or 'apocalyptic' appearance. Cyclone Narelle also approached the North West Cape in the early morning, when sunlight has to travel through more atmosphere. This meant more scattering occurred and made the red tones even stronger.”
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“Mega dust storms are a regular feature during prolonged droughts in central, southern and eastern Australia.”
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“A striking example was the 'Red Dawn' dust storm in Sydney on 23 September 2009. Residents woke to an eerie red dawn due to a huge dust cloud.”
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“Huge dust storms like this are usually produced by strong cold fronts and severe thunderstorms that force fine sediment particles up into the atmosphere.”
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“These particles are typically moved towards the east, even making their way into the upper levels of the troposphere. Occasionally the dust is deposited as far away as the Southern Alps of Aotearoa/New Zealand.”
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“A rare combination of the Pilbara’s exceptionally red soils, cyclonic winds from the right direction and perfect pre-rain timing allowed atmospheric dust to build to very high concentrations.”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.