Space Weather Message Code: WARK04 Serial Number: 4002 Issue Time: 2022 Jan 19 0015 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2022 Jan 19 0015 UTC Valid To: 2022 Jan 19 0600 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: 4001 Issue Time: 2022 Jan 18 0855 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4000 Valid From: 2022 Jan 18 0035 UTC Now Valid Until: 2022 Jan 18 1200 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: ALTK05 Serial Number: 1356 Issue Time: 2022 Jan 18 0109 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2022 Jan 18 0108 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes 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 grid fluctuations can occur.

Space Weather Message Code: ALTK04 Serial Number: 2264 Issue Time: 2022 Jan 18 0046 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2022 Jan 18 0040 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: WARK05 Serial Number: 1627 Issue Time: 2022 Jan 18 0043 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2022 Jan 18 0043 UTC Valid To: 2022 Jan 18 0600 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: WARK04 Serial Number: 4000 Issue Time: 2022 Jan 18 0034 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2022 Jan 18 0035 UTC Valid To: 2022 Jan 18 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: ALTK04 Serial Number: 2263 Issue Time: 2022 Jan 16 2028 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2022 Jan 16 2023 UTC Synoptic Period: 1800-2100 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: 3999 Issue Time: 2022 Jan 16 2019 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2022 Jan 16 2219 UTC Valid To: 2022 Jan 17 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: WARK04 Serial Number: 3998 Issue Time: 2022 Jan 16 1156 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3997 Valid From: 2022 Jan 15 1920 UTC Now Valid Until: 2022 Jan 16 1800 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: ALTK05 Serial Number: 1355 Issue Time: 2022 Jan 15 2235 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2022 Jan 15 2235 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes 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 grid fluctuations can occur.