Tag Archives: geomagnetic storm

Ongoing Geo-Magnetic Storm

Posted on by

GEOMAGNETIC STORM UNDERWAY: A G1-class geomagnetic storm is underway on Oct. 13th. Reports of bright auroras have been received from Scandinavia, Greenland, Canada and several northern-tier US states. Colin Chatfield sends this picture from Saskatoon, Saskatchewan:

“This is from my backyard around 5:00a.m. this morning,” says Chatfield. “Never have I seen the auroras so bright, especially from within the city. They were astounding, with purple visible to the naked eye.”

The ongoing storm was triggered by a knot of south-pointing magnetism from the sun. During the early hours of Oct. 13th, the knot bumped into Earth’s magnetic field, opening a crack in our planet’s magnetosphere. Solar wind poured in to fuel the auroras.

More auroras are in the offing. NOAA forecasters estimate a 40% chance of strong polar geomagnetic storms on Oct. 14th when a solar wind stream is expected to blow past Earth

from:    spaceweather.com

Geomagnetic Storm 7/29-30

Posted on by

GEOMAGNETIC STORM WARNING: NOAA forecasters estimate a 45% chance of polar geomagnetic storms on July 29-30 in response to a high-speed solar wind stream buffeting Earth’s magnetic field. Even stronger storming could occur on July 31st when a CME associated with yesterday’s M6-flare arrives. High-latitude sky watchers should be alert for auroras for the next three nights.

fr/spaceweather.com

Incoming CME 3/15

Posted on by

STRONG FLARE, INCOMING CME: Departing sunspot AR1429 unleashed another strong flare on March 13th, an M7-class eruption that peaked around 1741 UT. Although the sunspot is no longer directly facing Earth, the blast will affect our planet. Analysts at the Goddard Space Weather Lab say a CME is en route to Earth, and its impact on March 15th at 06:20 UT (+/- 7 hours) could trigger minor to moderate geomagnetic storms

fr/spaceweather.com

 

CME on the Horizon

Posted on by

NCOMING CME: A CME from sunspot AR1429 is nearing Earth. According to analysts at the Goddard Space Weather Lab, the cloud will arrive on March 11th at 0649 UT (+/- 7 hr). NOAA forecasters say the odds of a strong geomagnetic storm at that time is 50%.

The same eruption that hurled the CME toward Earth also produced amonsterous tsunami of plasma on the sun. NASA’s Solar Dynamics Observatory recorded the shadowy but powerful wave rippling away from the blast site:

The tsumani was about 100,000 km high and raced outward at 250 km/s with a total energy of about 2 million megatons of TNT. Such waves often underlie CMEs like the one en route to Earth now.

Animated forecast tracks show that the CME will also hit the Mars Science Lab (MSL) spacecraft on March 12th followed by Mars itself on March 13th. Mars rover Curiosity onboard MSL might get some interesting readings as the cloud passes by.

fr/spaceweather.com