• Geomagnetic storm in progress

    The geomagnetic field was unsettled to active at mid latitudes. Minor to major storm conditions occurred at high latitudes due to Coronal Hole (CH) high-speed stream (HSS) effects. Solar winds speeds were sustained above 620 km/s during the period. The greater than 2

  • Wonderful weekend auroras for start of May

    It has been a good weekend for northern sky watchers. A solar wind stream hit Earth’s magnetic field on Saturday, sparking two days of auroras around the Arctic Circle. In Alberta, Canada, this morning, the month of May began with a psychedelic sky:High-latitude

  • Geomagnetic storm in progress (April 30, 2012)

    A solar wind stream hit Earth’s magnetic field during the early hours of April 30th, sparking a high-latitude geomagnetic storm (slowly subsiding). In the United States, auroras descended as far south as Marquette, Michigan, where Shawn Malone took this picture before

  • Geomagnetic storm in progress (April 20, 2011)

    Geomagnetic storm is in progress. K index showing level 5. Solar windspeed: 548.7 km/secdensity: 1.9 protons/cm3Planetary K-indexNow: Kp= 5 storm24-hr max: Kp= 5 stormThe K-index is a code that is related to the maximum fluctuations of horizontal

  • Subsiding geomagnetic storm (April 13,2011)

    A geomagnetic storm that sparked auroras around the Arctic Circle and sent Northern Lights spilling over the Canadian border into the United States on April 12th is subsiding. At the height of the display, Shawn Malone took this picture from the shores of Lake

  • Geomagnetic storm in progress (April 12, 2011)

      K-indices of 5 or greater indicate storm-level geomagnetic activity around earth.Geomagnetic Storms: Probabilities for significant disturbances in Earth’s magnetic field are given for three activity levels: active, minor storm, severe storm. The

  • Geomagnetic storm in progress (April 6, 2011)

    The solar wind is blowing past earth at elevated levels today and combined with a south tilting Bz, is stirring up geomagnetic storming at high latitudes. C-Class flare activity is now taking place towards the new sunspot regions just to the east of Sunspot 1185. Keep

  • Earth is entering a stream of solar wind

    Earth is entering a stream of solar wind blowing ~500 km/s, and the encounter is stirring up geomagnetic activity around the Arctic Circle. The solar wind data (velocity and proton density) presented on spaceweather.com are updated every 10 minutes. They are derived

  • Geomagnetic storm in progress

    A coronal mass ejection (CME) hit Earth’s magnetic field on March 10th around 0630 UT. The impact, albeit weak, did provoke geomagnetic activity around the poles.Planetary K-indexNow: Kp= 5 storm24-hr max: Kp= 5 stormNewly-arriving coronagraph data from the Solar

  • Space weather could wreak havoc in gadget-driven world

    Advances in modern life have exposed humans to new weaknesses to space weather, which could disrupt communications, crash stock markets and cause months-long power outages, experts warned Saturday.Worst-case scenarios including scorched commercial satellites, GPS