Sun getting Angry, Xray Event and 7 Space Weather Alerts issued since yesterday

sunspot  AR2192

In this AIA 304 SDO image you can see the large sunspot AR2192 at the center which is causing much of the space weather activity.

The sun has been active in the last two days resulting in no fewer than 7 space weather alerts to be issued by NOAA. Alerts were issued for Type II radio emissions, Electron Flux (Exceeding R2 level), and an Xray event exceeding X1, (R3 – Strong).

Sunspot AR2192, seen at the center of the image above and facing Earthward, has created seven M-class solar flares.  NASA’s Solar Dynamics Observatory recorded a powerful flash of extreme UV radiation on Oct. 14:30 UT in the sunspot’s magnetic canopy.  So far no Earth directed CMEs have occurred but this could change as the sun spot continues to rotate and become more earth centered.

Listed below are some of the NOAA Space Weather Alerts/Warnings:

Issue Time: 2014 Oct 22 1454 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2014 Oct 22 1402 UTC
Maximum Time: 2014 Oct 22 1428 UTC
End Time: 2014 Oct 22 1450 UTC
X-ray Class: X1.6
Optical Class: 2b
Location: S14E13
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of
Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an
Issue Time: 2014 Oct 22 0521 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Begin Time: 2014 Oct 21 1525 UTC
Yesterday Maximum 2MeV Flux: 2238 pfu

Potential Impacts: Satellite systems may experience significant charging resulting
in increased risk to satellite systems.
Issue Time: 2014 Oct 22 0146 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2014 Oct 22 0144 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of
Earth. Extent of blackout of HF (high frequency) radio communication dependent upon
current X-ray Flux intensity.
Issue Time: 2014 Oct 22 0236 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Oct 22 0215 UTC

Description: Type IV emissions occur in association with major eruptions on the sun
and are typically associated with strong coronal mass ejections and solar radiation

Aurora viewing updates can be seen on the KnowledgeOrb Aurora viewing page.

NOAA Space Weather Scales (meaning of R1,S1, Etc.) can be found at
For more detailed current Space Weather visit KnowledgeOrb Space Weather at

About the author

Recipient of many prestigious NASA Awards including the Exceptional Public Service Medal and the Robert H. Goddard award. Experience includes working for NASA, as a contractor, in satellite design, construction and operations. Expert in the satellite operations concepts and ground systems including command, control, and science data processing.