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. 22nd.at 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 hour.
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 storms.
Aurora viewing updates can be seen on the KnowledgeOrb Aurora viewing page. http://www.knowledgeorb.com/current-aurora-borealis-activity-viewing/
NOAA Space Weather Scales (meaning of R1,S1, Etc.) can be found at http://www.knowledgeorb.com/current-space-weather/noaa-space-weather-scales/
For more detailed current Space Weather visit KnowledgeOrb Space Weather at http://www.knowledgeorb.com/current-space-weather/