Articles tagged "K index"
Geomagnetic storms - basic terms, data, plots and graphs
March 18, 2013
A coronal mass ejection (CME) that erupted on March 15, 2013, hit Earth's magnetic field at 06:00 UTC on March 17, 2013. The solar wind speed reached 700 km/s and sparked a moderately strong G2 (Kp=6) geomagnetic storm and minor S1 solar radiation storm. NOAA/SWPC
Geomagnetic storming levels back to normal
September 06, 2012
Geomagnetic storming reached the G2 (Moderate) level at high latitudes again early today. Bright auroras could be seen around Arctic Circle. It was sparked by one of two coronal mass ejections observed on September 2. Solar radiation storm levels have returned to
A coronal mass ejection (CME) hit Earth's magnetic field - K index rising, watch for auroras!!!
November 29, 2011
A coronal mass ejection (CME) hit Earth's magnetic field at approximately 2145 UTC on Nov. 28th. The impact was relatively weak and did not spark a strong geomagnetic storm yet. Kp index is at level 4.Solar
Minor geomagnetic storming underway
October 06, 2011
Minor geomagnetic storming (G1 on the Geomagnetic Storm Scale) is underway following the arrival at Earth of 1 or more Coronal Mass Ejections that erupted from the Sun late last week and into the weekend. Activity is not expected to strengthen much beyond current
Earth-directed coronal mass ejection expected
September 21, 2011
A coronal mass ejection (CME) is heading toward Earth and it could deliver a glancing blow to our planet's magnetic field on Sept. 22th around 23:00 UT. There are no large coronal holes on the Earth-facing side of the sun. High-latitude sky watchers should be alert for
Incoming coronal mass ejection
September 17, 2011
As predicted by analysts at the Goddard Space Weather Lab, a coronal mass ejection (CME) hit Earth's magnetic field at ~03:30 UT on Sept 17th. The impact was not strong. Nevertheless, the arrival of the CME could spark geomagnetic activity around the Arctic Circle.
Geomagnetic storm in progress
September 10, 2011
UPDATE: The Geomagnetic Storm has subsided over the past few hours. However, the solar wind remains energized and occasional pulses of activity are expected for another 24 hours. Region 1283, the responsible party back at the Sun, decayed today. The Geomagnetic Storm
Geomagnetic storm warning!
June 23, 2011
A fast-moving stream of solar wind is buffeting Earth's magnetic field. The combined effect of this stream plus a CME expected to arrive soon has prompted NOAA forecasters to declare a 30% to 35% chance of geomagnetic storms on June 23-24. High-latitude sky watchers