Source - Space Weather News for May 28, 2011: http://spaceweather.com
GEOMAGNETIC STORM: A solar wind stream hit Earth's magnetic field on May 27-28, sparking a moderate geomagnetic storm and auroras in both hemispheres. At the time this alert is being composed (1500 UT on May 28), naked-eye Southern Lights are dancing in the skies over Tasmania and New Zealand. If forecasts are correct, geomagnetic activity should remain at elevated levels for the next 24 to 48 hours. Visit http://spaceweather.com for updates and images of the ongoing storm.
SOLAR ACTIVITY INTENSIFIES: The recently-quiet sun is waking up. New sunspots are emerging across the solar disk, and at least one of them is crackling with C-class solar flares. Even stronger eruptions appear to be in the offing. If you would like alerts notifying you of solar flares and magnetic storms the instant they happen, please consider signing up for Space Weather Phone: http://spaceweatherphone.com .