Good Morning COMM-ISAC Partners, The NCC has been notified of the potential for a Category G3 Geomagnetic storm to occur Thursday December 10, 2020, which could impact some communications infrastructure. Please see notification below. Space Weather Message Code: WATA50 Serial Number: 64 Issue Time: 2020 Dec 08 1506 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Dec 09: G1 (Minor) Dec 10: G3 (Strong) Dec 11: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation 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. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. Please feel free to contact the NCC with any questions or concerns. Very respectfully, NCC Cybersecurity and Infrastructure Security Agency (CISA) Emergency Response Operations (ERO) Office: (703) 235-5080 | Fax: (703) 235-5078 | Email: NCC@CISA.dhs.gov GMG (CTR)
