Space Weather Message Code: WARK04 Serial Number: 3853 Issue Time: 2021 Mar 07 2219 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Mar 07 2215 UTC Valid To: 2021 Mar 08 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: WARK04 Serial Number: 3852 Issue Time: 2021 Mar 06 1757 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3851 Valid From: 2021 Mar 06 0230 UTC Now Valid Until: 2021 Mar 07 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 –

Space Weather Message Code: WARK04 Serial Number: 3851 Issue Time: 2021 Mar 06 0308 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3850 Valid From: 2021 Mar 06 0230 UTC Now Valid Until: 2021 Mar 06 1800 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 –

Space Weather Message Code: ALTK04 Serial Number: 2198 Issue Time: 2021 Mar 06 0258 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Mar 06 0257 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: 3850 Issue Time: 2021 Mar 06 0228 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Mar 06 0230 UTC Valid To: 2021 Mar 06 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: 3849 Issue Time: 2021 Mar 04 0554 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3848 Valid From: 2021 Mar 02 0830 UTC Now Valid Until: 2021 Mar 04 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: 3848 Issue Time: 2021 Mar 03 2354 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3847 Valid From: 2021 Mar 02 0830 UTC Now Valid Until: 2021 Mar 04 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 –

Space Weather Message Code: WATA20 Serial Number: 886 Issue Time: 2021 Mar 03 2107 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Mar 04: None (Below G1) Mar 05: None (Below G1) Mar 06: 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: 3847 Issue Time: 2021 Mar 03 1756 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3846 Valid From: 2021 Mar 02 0830 UTC Now Valid Until: 2021 Mar 03 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: ALTK05 Serial Number: 1314 Issue Time: 2021 Mar 03 0900 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Mar 03 0859 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.