Space Weather Message Code: ALTK05 Serial Number: 1044 Issue Time: 2016 Oct 27 0300 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 27 0259 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: ALTK05 Serial Number: 1043 Issue Time: 2016 Oct 26 2342 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 26 2341 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: WARK05 Serial Number: 1266 Issue Time: 2016 Oct 26 2307 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1265 Valid From: 2016 Oct 25 0215 UTC Now Valid Until: 2016 Oct 27 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1042 Issue Time: 2016 Oct 26 2100 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 26 2059 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: ALTK06 Serial Number: 421 Issue Time: 2016 Oct 26 1747 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2016 Oct 26 1740 UTC Synoptic Period: 1500-1800 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: WARK06 Serial Number: 366 Issue Time: 2016 Oct 26 1716 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Oct 26 1716 UTC Valid To: 2016 Oct 26 2100 UTC Warning Condition: Onset 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

Space Weather Message Code: ALTK05 Serial Number: 1041 Issue Time: 2016 Oct 26 1708 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 26 1701 UTC Synoptic Period: 1500-1800 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: 1265 Issue Time: 2016 Oct 26 1621 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1264 Valid From: 2016 Oct 25 0215 UTC Now Valid Until: 2016 Oct 26 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1040 Issue Time: 2016 Oct 26 1439 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 26 1433 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: 1264 Issue Time: 2016 Oct 26 1122 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1263 Valid From: 2016 Oct 25 0215 UTC Now Valid Until: 2016 Oct 26 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 –