Space Weather Message Code: WARK04 Serial Number: 4248 Issue Time: 2023 Jan 18 0754 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4247 Valid From: 2023 Jan 17 2328 UTC Now Valid Until: 2023 Jan 18 1500 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: WARK05 Serial Number: 1736 Issue Time: 2023 Jan 18 0416 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2023 Jan 18 0415 UTC Valid To: 2023 Jan 18 0900 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: 2333 Issue Time: 2023 Jan 17 2331 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Jan 17 2330 UTC Synoptic Period: 2100-2400 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: 4247 Issue Time: 2023 Jan 17 2329 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 17 2328 UTC Valid To: 2023 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: WARK04 Serial Number: 4246 Issue Time: 2023 Jan 16 1142 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4245 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 16 2100 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: 1423 Issue Time: 2023 Jan 15 2306 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2023 Jan 15 2306 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.

Space Weather Message Code: WARK05 Serial Number: 1735 Issue Time: 2023 Jan 15 2259 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2023 Jan 15 2300 UTC Valid To: 2023 Jan 16 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: 4244 Issue Time: 2023 Jan 15 1756 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4243 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 16 0600 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: WARK04 Serial Number: 4243 Issue Time: 2023 Jan 15 1014 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4242 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 15 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: WARK05 Serial Number: 1734 Issue Time: 2023 Jan 15 0855 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1733 Valid From: 2023 Jan 15 0255 UTC Now Valid Until: 2023 Jan 15 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 60 degrees Geomagnetic Latitude. Induced Currents –