Space Weather Message Code: WARK04 Serial Number: 3714 Issue Time: 2020 Feb 29 2223 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 29 2221 UTC Valid To: 2020 Mar 01 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: ALTK04 Serial Number: 2149 Issue Time: 2020 Feb 21 0119 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2020 Feb 21 0115 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: WARK04 Serial Number: 3713 Issue Time: 2020 Feb 21 0017 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2020 Feb 21 0015 UTC Valid To: 2020 Feb 21 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: 3712 Issue Time: 2020 Feb 19 0843 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3711 Valid From: 2020 Feb 18 1305 UTC Now Valid Until: 2020 Feb 19 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: 1549 Issue Time: 2020 Feb 19 0600 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1548 Valid From: 2020 Feb 18 1400 UTC Now Valid Until: 2020 Feb 19 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK04 Serial Number: 2148 Issue Time: 2020 Feb 19 0359 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2020 Feb 19 0358 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: WARK05 Serial Number: 1548 Issue Time: 2020 Feb 18 1815 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1547 Valid From: 2020 Feb 18 1400 UTC Now Valid Until: 2020 Feb 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 3711 Issue Time: 2020 Feb 18 1814 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3710 Valid From: 2020 Feb 18 1305 UTC Now Valid Until: 2020 Feb 19 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 –

Space Weather Message Code: WATA20 Serial Number: 867 Issue Time: 2020 Feb 18 1809 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Feb 19: G1 (Minor) Feb 20: None (Below G1) Feb 21: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT 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.

Space Weather Message Code: WARK05 Serial Number: 1547 Issue Time: 2020 Feb 18 1337 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2020 Feb 18 1400 UTC Valid To: 2020 Feb 18 2100 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