Zonnevlammen #3: As The Sun Turns

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Op donderdag 8 maart 2012 12:49 schreef MissHobje het volgende:
Is er al iets gebeurd van betekenis? qua storingen of iets? of komt dat nog...

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Op donderdag 8 maart 2012 13:01 schreef RolStaart-Beer het volgende:

[..]

Mi..j..n..p..c..h.a..n.g..t...a....l..e....e...n.......b.e...e...t...j.e...

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Op donderdag 8 maart 2012 23:06 schreef Maver24 het volgende:
Is er nu kans vanavond om wat te zien ???,

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Space Weather Message Code: WARK07
Serial Number: 34
Issue Time: 2012 Mar 09 0658 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2012 Mar 09 0700 UTC
Valid To: 2012 Mar 09 0900 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme

NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/NOAAscales

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.

Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.

Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.

Radio - HF (high frequency) radio may be intermittent.

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Op vrijdag 9 maart 2012 14:50 schreef Scrummie het volgende:
Wat is 0900 UTC in onze tijd?

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Op zaterdag 10 maart 2012 02:40 schreef -CRASH- het volgende:
Poollicht misschien te zien bij
heldere donkere hemel! Groen poollicht
tot ca. 10° boven noordelijke horizon.
Daarboven is rood/violet mogelijk

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Magnetic fields on the sun's northeastern limb erupted around 17:45 UT on April 16th, producing one of the most visually-spectacular explosions in years. NASA's Solar Dynamics Observatory (SDO) recorded the blast at extreme ultraviolet wavelengths:

The explosion, which registered M1.7 on the Richter Scale of solar flares, was not Earth-directed, but it did hurl a CME into space. Analysts at the Goddard Space Weather Lab have analyzed the trajectory of the cloud and found that it will hit NASA's STEREO-B spacecraft, the Spitzer space telescope, and the rover Curiosity en route to Mars. Planets Venus and Mars could also receive a glancing blow.

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INCOMING CME
Sunspot AR1471 erupted on May 7th, producing an M1-class solar flare and an Earth-directed coronal mass ejection (CME). According to a forecast track prepared by analysts at the Goddard Space Weather lab, the cloud will reach Earth on May 9th at 13:40 UT (+/- 7 hours).

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One of the largest sunspot groups in years rotated over the sun's northeastern limb this weekend. With a least four dark cores larger than Earth, AR1476 sprawls more than 100,000 km from end to end, and makes an easy target for backyard solar telescopes. Amateur astronomer Alan Friedman sends this picture of the behemoth from his backyard in Buffalo, NY:

"AR1476 is firecrackler," says Friedman.

Indeed, the active region is crackling with impulsive M-class solar flares. Based on the sunspot's complex 'beta-gamma' magnetic field, NOAA forecasters estimate a 75% chance of more M-flares during the next 24 hours. There is also a 10% chance of powerful X-flares.

"This one is going to be fun as it turns to face us!" predicts Friedman. He might be right