Aurora Alerts are issued whenever the Australian region estimated K-index reaches 6 or greater. When an alert is current the alert information indicates the latitudinal range in terms of high, middle, low and equatorial regions where aurora may be visible under good observing conditions.
Aurora Watches are warnings with lead times of up to 48 hours. They will only be issued in response to a significant solar Coronal Mass Ejection (CME) or coronal hole likely to be geo-effective. Aurora alerts will follow if favourable space weather activity acutally occurs.
Aurora Outlooks are warnings with lead times of 3-7 days. They will be issued in response to the presence of a large active solar region expected to rotate into a position that is favourable for CMEs, and similarly for significant coronal holes. Solar regions that maintain high levels of solar flare activity for sustained periods are rare. Consequently, these notices are likely to be infrequent. Aurora watches and/or alerts will follow if a geoeffective CME is observed and/or significant geomagnetic activity actually occurs.
K index is a measure of geomagnetic activity for a 3-hour period. The larger the K index, the greater the chance of seeing an aurora at lower latitudes. To check if an aurora could be visible at your latitude for a given K-index value, look at the table of visibility range estimates or try out the Auroral Oval Prediction Tool. The Kaus index is the Estimated Australian Region K index sourced from SWS. Kaus is a near real-time estimate of the K index for the Australian region, which is recalculated approximately every 5 minutes. The Kp index is the Estimated Planetary K index sourced from NOAA/SWPC. The Kp index is updated every 3-hours and its timestamp will be behind that of the Kaus index. Estimated K-indices generated for the Australian region are the average of the estimated K-indices from the individual stations and have a range of values from 0 (very quiet) up to 9 (extremely disturbed).
K Index Value:
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Valid Time: ( AEST )
Analysis time: ( AEST )
Above Aurora Script Credits
Designed in ( Early Dec 2021 ) by : Beaumaris Weather and ( beteljuice, God Rest his Soul )
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Beaumaris Weather - Tas
