Space Weather Message Code: WATA20 Serial Number: 844 Issue Time: 2018 Nov 07 1810 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 08: None (Below G1) Nov 09: G1 (Minor) Nov 10: 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. Induced

Space Weather Message Code: WARK04 Serial Number: 3559 Issue Time: 2018 Nov 07 0539 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 07 0538 UTC Valid To: 2018 Nov 07 1200 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: 843 Issue Time: 2018 Nov 06 2045 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 07: None (Below G1) Nov 08: None (Below G1) Nov 09: 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: 3558 Issue Time: 2018 Nov 06 0548 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3557 Valid From: 2018 Nov 04 1906 UTC Now Valid Until: 2018 Nov 06 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: 3557 Issue Time: 2018 Nov 05 2334 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3556 Valid From: 2018 Nov 04 1906 UTC Now Valid Until: 2018 Nov 06 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: WARK04 Serial Number: 3556 Issue Time: 2018 Nov 05 1046 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3555 Valid From: 2018 Nov 04 1906 UTC Now Valid Until: 2018 Nov 05 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: 1252 Issue Time: 2018 Nov 05 0739 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2018 Nov 05 0737 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: 470 Issue Time: 2018 Nov 05 0517 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2018 Nov 05 0517 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: WARK04 Serial Number: 3555 Issue Time: 2018 Nov 05 0502 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3554 Valid From: 2018 Nov 04 1906 UTC Now Valid Until: 2018 Nov 05 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: ALTK05 Serial Number: 1251 Issue Time: 2018 Nov 05 0454 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2018 Nov 05 0454 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.