Space Weather Message Code: WARK04 Serial Number: 3367 Issue Time: 2017 Nov 09 1613 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Nov 09 1615 UTC Valid To: 2017 Nov 09 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 – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 3366 Issue Time: 2017 Nov 09 0555 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3365 Valid From: 2017 Nov 07 0315 UTC Now Valid Until: 2017 Nov 09 1500 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: 1198 Issue Time: 2017 Nov 08 2359 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 2359 UTC Synoptic Period: 2100-2400 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: WATA20 Serial Number: 808 Issue Time: 2017 Nov 08 2037 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 09: G1 (Minor) Nov 10: G1 (Minor) Nov 11: 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 Currents

Space Weather Message Code: ALTK05 Serial Number: 1197 Issue Time: 2017 Nov 08 1802 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 1758 UTC Synoptic Period: 1800-2100 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: 1437 Issue Time: 2017 Nov 08 1740 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1436 Valid From: 2017 Nov 07 0745 UTC Now Valid Until: 2017 Nov 09 0300 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1196 Issue Time: 2017 Nov 08 1342 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 1339 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: WARK05 Serial Number: 1436 Issue Time: 2017 Nov 08 1010 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1435 Valid From: 2017 Nov 07 0745 UTC Now Valid Until: 2017 Nov 08 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1195 Issue Time: 2017 Nov 08 1005 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 1005 UTC Synoptic Period: 0900-1200 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: 458 Issue Time: 2017 Nov 08 0430 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Nov 08 0429 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