Space Weather Message Code: WARK06 Serial Number: 350 Issue Time: 2016 Sep 27 1609 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Sep 27 1610 UTC Valid To: 2016 Sep 27 2359 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: 1011 Issue Time: 2016 Sep 27 1543 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 27 1543 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: WARK04 Serial Number: 2989 Issue Time: 2016 Sep 27 1449 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2988 Valid From: 2016 Sep 25 2022 UTC Now Valid Until: 2016 Sep 28 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: ALTK05 Serial Number: 1010 Issue Time: 2016 Sep 27 1036 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 27 1036 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: ALTK05 Serial Number: 1009 Issue Time: 2016 Sep 27 0903 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 27 0859 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: WARK04 Serial Number: 2987 Issue Time: 2016 Sep 27 0357 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2986 Valid From: 2016 Sep 25 2022 UTC Now Valid Until: 2016 Sep 27 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: ALTK05 Serial Number: 1008 Issue Time: 2016 Sep 27 0119 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 27 0119 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: WATA30 Serial Number: 141 Issue Time: 2016 Sep 27 0029 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: Sep 28: G2 (Moderate) Sep 29: G2 (Moderate) Sep 30: G2 (Moderate) 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 55 degrees Geomagnetic Latitude. Induced Currents

Space Weather Message Code: WARK05 Serial Number: 1234 Issue Time: 2016 Sep 26 2353 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Sep 26 2353 UTC Valid To: 2016 Sep 27 0400 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: 2986 Issue Time: 2016 Sep 26 1751 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2985 Valid From: 2016 Sep 25 2022 UTC Now Valid Until: 2016 Sep 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 65 degrees Geomagnetic Latitude. Induced Currents –