Geomagnetic storm reaching G2 – Moderate levels in progress

geomagnetic-storm-reaching-g2-moderate-levels-in-progress

Solar filament eruption on June 4th unleashed a Coronal Mass Ejection (CME) which partially hit Earth's magnetic field at 16:57 UTC on June 7, 2014.

The impact sparked minor geomagnetic storming which increased by the morning of June 8th. Geomagnetic K-index of 5 (G1 – Minor) threshold was reached at 04:48 UTC today. 

Geomagnetic K-index of 6 (G2 – Moderate) threshold was reached at 06:00 UTC. Potential Impacts: area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.  Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. HF (high frequency) radio propagation can fade at higher latitudes. Aurora may be seen as low as New York to Wisconsin to Washington state.

Solar filament eruption – June 4, 2014. Image credit: ESA/NASA. Click here to set the scene in motion.

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Space Weather Message Code: ALTK05
Serial Number: 746
Issue Time: 2014 Jun 08 0451 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 Jun 08 0448 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 – Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents – Weak power grid fluctuations can occur.
Spacecraft – Minor impact on satellite operations possible.
Aurora – Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

***

Space Weather Message Code: ALTK06
Serial Number: 322
Issue Time: 2014 Jun 08 0618 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2014 Jun 08 0600 UTC
Synoptic Period: 0600-0900 UTC

Active Warning: No
NOAA Scale: G2 – Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents – Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft – Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio – HF (high frequency) radio propagation can fade at higher latitudes.
Aurora – Aurora may be seen as low as New York to Wisconsin to Washington state.

***

Geomagnetic storming reaching G2 – Moderate levels are expected throughout the day.

A return to mostly quiet conditions are expected on June 9 and 10.

Featured image: ESA / NASA – SOHO

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