Space Weather Message Code: ALTK04 Serial Number: 2185 Issue Time: 2021 Jan 12 0151 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Jan 12 0151 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3804 Issue Time: 2021 Jan 12 0105 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Jan 12 0105 UTC Valid To: 2021 Jan 12 0900 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 3803 Issue Time: 2021 Jan 11 1754 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3802 Valid From: 2021 Jan 11 1330 UTC Now Valid Until: 2021 Jan 11 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK04 Serial Number: 2184 Issue Time: 2021 Jan 11 1506 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Jan 11 1459 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3802 Issue Time: 2021 Jan 11 1329 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Jan 11 1330 UTC Valid To: 2021 Jan 11 1800 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2183 Issue Time: 2021 Jan 06 0802 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Jan 06 0801 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3801 Issue Time: 2021 Jan 06 0529 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Jan 06 0530 UTC Valid To: 2021 Jan 06 1200 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK05 Serial Number: 1569 Issue Time: 2021 Jan 05 1414 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Jan 05 1414 UTC Valid To: 2021 Jan 05 1800 UTC Warning Condition: Onset NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power

Space Weather Message Code: ALTK04 Serial Number: 2182 Issue Time: 2021 Jan 05 1356 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Jan 05 1348 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3800 Issue Time: 2021 Jan 05 1338 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Jan 05 1339 UTC Valid To: 2021 Jan 06 0300 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora