Space Weather Message Code: WARK04 Serial Number: 3833 Issue Time: 2021 Feb 21 2343 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3832 Valid From: 2021 Feb 19 2034 UTC Now Valid Until: 2021 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: WARK04 Serial Number: 3832 Issue Time: 2021 Feb 21 1040 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3831 Valid From: 2021 Feb 19 2034 UTC Now Valid Until: 2021 Feb 21 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: 3831 Issue Time: 2021 Feb 20 2322 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3830 Valid From: 2021 Feb 19 2034 UTC Now Valid Until: 2021 Feb 21 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: WARK04 Serial Number: 3830 Issue Time: 2021 Feb 20 1759 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3829 Valid From: 2021 Feb 19 2034 UTC Now Valid Until: 2021 Feb 20 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: 3829 Issue Time: 2021 Feb 20 0459 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3828 Valid From: 2021 Feb 19 2034 UTC Now Valid Until: 2021 Feb 20 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: WARK04 Serial Number: 3828 Issue Time: 2021 Feb 19 2034 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Feb 19 2034 UTC Valid To: 2021 Feb 20 0600 UTC Warning Condition: Persistence Comment: New warning supercedes the original with valid start time of 19/1411 UTC 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

Space Weather Message Code: WARK04 Serial Number: 3827 Issue Time: 2021 Feb 19 2031 UTC Cancel Serial Number: 3826 Original Issue Time: Comment: Cancelling current warning due to program error. Will issue one to replace it with an ending time of Feb 20 0600 UTC 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: 1576 Issue Time: 2021 Feb 19 2017 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Feb 19 2015 UTC Valid To: 2021 Feb 20 0300 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: WATA20 Serial Number: 883 Issue Time: 2021 Feb 19 1820 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Feb 20: G1 (Minor) Feb 21: None (Below G1) Feb 22: 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: WARK04 Serial Number: 3826 Issue Time: 2021 Feb 19 1755 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3825 Valid From: 2021 Feb 19 1411 UTC Now Valid Until: 2021 Feb 19 2359 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 –