Space Weather Message Code: WARK05 Serial Number: 1617 Issue Time: 2021 Nov 02 0521 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2021 Nov 02 0521 UTC Valid To: 2021 Nov 02 1500 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: WARK04 Serial Number: 3954 Issue Time: 2021 Nov 02 0146 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3953 Valid From: 2021 Nov 01 2135 UTC Now Valid Until: 2021 Nov 02 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: 903 Issue Time: 2021 Nov 01 2150 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 02: None (Below G1) Nov 03: None (Below G1) Nov 04: 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: ALTK04 Serial Number: 2247 Issue Time: 2021 Nov 01 2140 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Nov 01 2140 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: 3953 Issue Time: 2021 Nov 01 2140 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Nov 01 2135 UTC Valid To: 2021 Nov 02 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: ALTK05 Serial Number: 1342 Issue Time: 2021 Oct 31 1502 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2021 Oct 31 1459 UTC Synoptic Period: 1200-1500 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: WARK04 Serial Number: 3928 Issue Time: 2021 Sep 08 1455 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3927 Valid From: 2021 Sep 08 0845 UTC Now Valid Until: 2021 Sep 08 2100 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: ALTK04 Serial Number: 2232 Issue Time: 2021 Sep 08 1007 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Sep 08 1006 UTC Synoptic Period: 0900-1200 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: 3927 Issue Time: 2021 Sep 08 0843 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Sep 08 0845 UTC Valid To: 2021 Sep 08 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: ALTK04 Serial Number: 2231 Issue Time: 2021 Sep 08 0054 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2021 Sep 08 0050 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