Space Weather Message Code: ALTK04 Serial Number: 2191 Issue Time: 2021 Feb 13 1047 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Feb 13 1045 UTC Synoptic Period: 0900-1200 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: 3822 Issue Time: 2021 Feb 13 0421 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Feb 13 0420 UTC Valid To: 2021 Feb 13 1500 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: 3821 Issue Time: 2021 Feb 08 2333 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Feb 08 2331 UTC Valid To: 2021 Feb 09 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: 3820 Issue Time: 2021 Feb 07 1453 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3819 Valid From: 2021 Feb 06 2000 UTC Now Valid Until: 2021 Feb 07 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: WARK04 Serial Number: 3819 Issue Time: 2021 Feb 07 0747 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3818 Valid From: 2021 Feb 06 2000 UTC Now Valid Until: 2021 Feb 07 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: ALTK05 Serial Number: 1308 Issue Time: 2021 Feb 07 0553 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Feb 07 0543 UTC Synoptic Period: 0300-0600 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: 1575 Issue Time: 2021 Feb 07 0325 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Feb 07 0230 UTC Valid To: 2021 Feb 07 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: WARK05 Serial Number: 1573 Issue Time: 2021 Feb 07 0228 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Feb 07 0230 UTC Valid To: 2021 Feb 07 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: ALTK05 Serial Number: 1307 Issue Time: 2021 Feb 07 0243 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Feb 07 0238 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: ALTK05 Serial Number: 1307 Issue Time: 2021 Feb 07 0243 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Feb 06 0238 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.