Space Weather Message Code: WARK04 Serial Number: 3709 Issue Time: 2020 Feb 18 0652 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 18 0651 UTC Valid To: 2020 Feb 18 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: ALTK04 Serial Number: 2146 Issue Time: 2020 Feb 08 0001 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2020 Feb 07 2359 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: 3708 Issue Time: 2020 Feb 07 2312 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 07 2315 UTC Valid To: 2020 Feb 08 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: 3707 Issue Time: 2020 Feb 07 0252 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3706 Valid From: 2020 Feb 06 2019 UTC Now Valid Until: 2020 Feb 07 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: 1546 Issue Time: 2020 Feb 06 2030 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2020 Feb 06 2030 UTC Valid To: 2020 Feb 06 2359 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: 2145 Issue Time: 2020 Feb 06 2021 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2020 Feb 06 2021 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: 3706 Issue Time: 2020 Feb 06 2019 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 06 2019 UTC Valid To: 2020 Feb 07 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

Space Weather Message Code: ALTK04 Serial Number: 2144 Issue Time: 2020 Feb 06 0724 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2020 Feb 06 0723 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: 3705 Issue Time: 2020 Feb 06 0651 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 06 0650 UTC Valid To: 2020 Feb 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: WARK04 Serial Number: 3704 Issue Time: 2020 Jan 31 0502 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3703 Valid From: 2020 Jan 30 1650 UTC Now Valid Until: 2020 Jan 31 0900 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 –