En peu de mots: soyez toujours prêts à faire face à des coupures de courant, à la rupture des services publics (eau, nourriture, essence, etc.) et à des cataclymes de toutes sortes!
NOAA’s space weather experts are available to discuss this and the potential for more solar storms this week.
Impacts have arrived on Earth, jolting the planet’s magnetic field and triggering strong “geomagnetic storming” in some regions. Saturday’s coronal mass ejection – a burst of charged particles and magnetic field that streamed out from the sun at about five million miles an hour – delivered a glancing blow to the planet. If it had been directed straight at Earth, the geomagnetic storming could have reached “severe” to “extreme” levels.
Geomagnetic storms on Earth can impede the operation of electrical grids and temporarily damage radio and satellite telecommunications. No impacts to the power grid, satellite or other technological systems have yet been reported yet from today’s geomagnetic storm, which could persist for several more hours.
The spot on the sun that produced Saturday’s coronal mass ejection remains active and is well positioned to deliver more storm activity in the next several days. NOAA’s SWPC will continue to watch the active region for activity, and will continue to inform its customers – grid operators, satellite operators, airlines and more – about what to expect, so they can protect infrastructure and the public.
Space weather can also trigger spectacular aurora (northern and southern lights). Tonight, viewers in Northern Asia and Europe have a chance of seeing aurora.
|Power systems: voltage corrections may be required, false alarms triggered on some protection devices. Spacecraft operations: surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems.|
Other systems: intermittent satellite navigation and low-frequency radio navigation problems may occur, HF radio may be intermittent, and aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.)**.