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

Space Weather Message Code: ALTK05 Serial Number: 1194 Issue Time: 2017 Nov 08 0406 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 0405 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: ALTK06 Serial Number: 457 Issue Time: 2017 Nov 08 0231 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Nov 08 0230 UTC Synoptic Period: 0000-0300 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: ALTK05 Serial Number: 1193 Issue Time: 2017 Nov 08 0148 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Nov 08 0147 UTC Synoptic Period: 0000-0300 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: 3363 Issue Time: 2017 Nov 07 2340 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3362 Valid From: 2017 Nov 07 0315 UTC Now Valid Until: 2017 Nov 08 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: ALTK06 Serial Number: 456 Issue Time: 2017 Nov 07 2317 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Nov 07 2317 UTC Synoptic Period: 2100-2400 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: WARK05 Serial Number: 1435 Issue Time: 2017 Nov 07 2316 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1434 Valid From: 2017 Nov 07 0745 UTC Now Valid Until: 2017 Nov 08 1200 UTC Warning Condition: Persistence Comment: This is a correction to the previous G1 extension. New ending valid time is on 08 Nov 2017 @ 1200 UTC, not 07 Nov.

Space Weather Message Code: WARK05 Serial Number: 1434 Issue Time: 2017 Nov 07 2304 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1433 Valid From: 2017 Nov 07 0745 UTC Now Valid Until: 2017 Nov 07 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 60 degrees Geomagnetic Latitude. Induced Currents –