Space Weather Message Code: ALTK05 Serial Number: 1310 Issue Time: 2021 Mar 01 0723 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Mar 01 0721 UTC Synoptic Period: 0600-0900 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: ALTK06 Serial Number: 477 Issue Time: 2021 Mar 01 0421 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2021 Mar 01 0420 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 – Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents – Power grid fluctuations can occur. High-latitude

Space Weather Message Code: WARK06 Serial Number: 439 Issue Time: 2021 Mar 01 0411 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2021 Mar 01 0410 UTC Valid To: 2021 Mar 01 0900 UTC Warning Condition: Onset NOAA Scale: G2 – Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents – Power grid

Space Weather Message Code: ALTK05 Serial Number: 1309 Issue Time: 2021 Mar 01 0401 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Mar 01 0359 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: 1579 Issue Time: 2021 Mar 01 0349 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Mar 01 0350 UTC Valid To: 2021 Mar 01 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: 2196 Issue Time: 2021 Mar 01 0346 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Mar 01 0345 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: 3841 Issue Time: 2021 Mar 01 0256 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Mar 01 0300 UTC Valid To: 2021 Mar 01 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: WATA20 Serial Number: 885 Issue Time: 2021 Feb 27 2047 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Feb 28: None (Below G1) Mar 01: None (Below G1) Mar 02: G1 (Minor) 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: 3840 Issue Time: 2021 Feb 25 0535 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3839 Valid From: 2021 Feb 24 0600 UTC Now Valid Until: 2021 Feb 25 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: 3839 Issue Time: 2021 Feb 24 2343 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3838 Valid From: 2021 Feb 24 0600 UTC Now Valid Until: 2021 Feb 25 0600 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 –