Space Weather Message Code: ALTK05 Serial Number: 1365 Issue Time: 2022 Feb 22 0904 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2022 Feb 22 0859 UTC Synoptic Period: 0900-1200 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: 1644 Issue Time: 2022 Feb 22 0845 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1643 Valid From: 2022 Feb 22 0535 UTC Now Valid Until: 2022 Feb 22 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 4037 Issue Time: 2022 Feb 22 0544 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4036 Valid From: 2022 Feb 22 0346 UTC Now Valid Until: 2022 Feb 22 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: WARK05 Serial Number: 1643 Issue Time: 2022 Feb 22 0537 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2022 Feb 22 0535 UTC Valid To: 2022 Feb 22 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: 2274 Issue Time: 2022 Feb 22 0414 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2022 Feb 22 0413 UTC Synoptic Period: 0300-0600 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: 4036 Issue Time: 2022 Feb 22 0347 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2022 Feb 22 0346 UTC Valid To: 2022 Feb 22 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: 2273 Issue Time: 2022 Feb 21 1433 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2022 Feb 21 1432 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: 4035 Issue Time: 2022 Feb 21 1423 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2022 Feb 21 1424 UTC Valid To: 2022 Feb 21 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: ALTK05 Serial Number: 1364 Issue Time: 2022 Feb 20 0300 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2022 Feb 20 0259 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: WARK05 Serial Number: 1642 Issue Time: 2022 Feb 20 0234 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2022 Feb 20 0234 UTC Valid To: 2022 Feb 20 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