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The Earth might have lucked out on Wednesday when it narrowly escaped the incoming wave of a coronal mass ejection (CME) cloud and avoided a solar storm event. However, things took a turn for the worse towards the south on Thursday, April 6, when a newly formed sunspot exploded spewing out an M3-class solar flare. The flare was Earth-directed and the high radiation has affected the Indian Ocean region. Multiple south Asian countries including India, Sri Lanka, Bangladesh, China, Japan and South Korea have fallen into its geoeffective area. The flare eruption has also caused a shortwave radio blackout in the region for a temporary period.
The incident was reported by SpaceWeather.com which noted in its website, “There’s a new sunspot rotating over the sun’s southeastern limb, and it just produced an M3-class solar flare. The eruption on April 6th at 0553 UT caused a minor shortwave radio blackout over the Indian Ocean. More flares may be in the offing as the sunspot turns toward Earth”.
Solar flare causes blackout over Indian Ocean
This is the first time in at least two years when a solar flare eruption has directly impacted the Indian Ocean region. Usually, these flares impact the Pacific Ocean and surrounding countries such as Australia, New Zealand, South American countries and Western coast of the USA.
India has also fallen victim to this solar flare eruption and shortwave radio blackout affected the nation briefly. During this period, drone pilots, amateur radio operators and aviators would have faced temporary disruption of low-end radio frequencies (usually 30MHz or lower). Additionally, GPS services might also have faced disruption for airline services and ships in the region, although no confirmed reports for the same has been received.
While it is too early to tell, the eruption could have also released a CME cloud which can reach the Earth in coming days and cause a solar storm event. Such solar storms can damage satellites, disrupt mobile network and internet services and in extreme cases can also damage power grids and Earth-based sensitive electronics.
DSCOVR satellite’s role in solar weather monitoring
NOAA monitors the solar storms and Sun’s behavior using its DSCOVR satellite which became operational in 2016. The recovered data is then run through the Space Weather Prediction Center and the final analysis is prepared. The different measurements are done on temperature, speed, density, degree of orientation and frequency of the solar particles.
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