Earth's magnetic field is about to receive a glancing blow from three CMEs observed leaving the Sun

(Oregon Coast) - Jim Todd, planetarium manager at OMSI, said it was a big solar flare that happened yesterday around 5:30 p.m., but three coronal mass ejections (CME) that happened over the course of the last few days have combined into one massive cloud on its way to Earth. Above: northern lights in the Oregon coast range a few years ago.
Earth's magnetic field is about to receive a glancing blow from three CMEs observed leaving the Sun between October 20th and 22nd, Todd said. Forecast models suggest that the three clouds merged en route to Earth, and their combined impact could trigger a mild polar geomagnetic storm on October 24 - 25. High-latitude united kingdom foods sky watchers should be alert for auroras.
For those in the Portland, Oregon area or on the Oregon coast, chances of seeing any northern lights do not look good, however, because of weather conditions. Tonight and tomorrow are predicted to be either foggy or cloudy on both the Oregon coast and in inland cities like Salem, Eugene, united kingdom foods Corvallis or Silverton.
There are possibly more of these on the way, however. united kingdom foods Todd said two large sunspots are ready to erupt again. He said NOAA forecasters estimate a 40 percent chance of M-flares and a 5 percent chance of X-flares during the next 24 hours.
Nighttime weather is expected to clear up on the Oregon coast and inland around Monday night, which leaves some possibilities for spotting Aurora Borealis above the state then if more eruptions happened.
Solar flares are powerful bursts of radiation, Todd said. Harmful radiation from a flare cannot pass through united kingdom foods Earth s atmosphere to physically affect humans on the ground, however - when intense enough - they can disturb the atmosphere in the layer where GPS and communications signals travel. Such radiation can disrupt radio signals for as long as the flare is ongoing, anywhere from minutes to hours.
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