Space Weather Message Code: ALTK05 Serial Number: 1017 Issue Time: 2016 Sep 29 0533 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 29 0531 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: WARK05 Serial Number: 1241 Issue Time: 2016 Sep 29 0528 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1240 Valid From: 2016 Sep 26 2353 UTC Now Valid Until: 2016 Sep 29 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 2993 Issue Time: 2016 Sep 29 0527 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2992 Valid From: 2016 Sep 25 2022 UTC Now Valid Until: 2016 Sep 29 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: WATA20 Serial Number: 743 Issue Time: 2016 Sep 28 2108 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Sep 29: G2 (Moderate) Sep 30: G2 (Moderate) Oct 01: 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: WARK04 Serial Number: 2992 Issue Time: 2016 Sep 28 2049 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2991 Valid From: 2016 Sep 25 2022 UTC Now Valid Until: 2016 Sep 29 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: 1016 Issue Time: 2016 Sep 28 1841 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 28 1841 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: ALTK05 Serial Number: 1015 Issue Time: 2016 Sep 28 1659 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 28 1657 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: WARK06 Serial Number: 351 Issue Time: 2016 Sep 28 1546 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Sep 28 1546 UTC Valid To: 2016 Sep 28 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: WARK05 Serial Number: 1239 Issue Time: 2016 Sep 28 1351 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1238 Valid From: 2016 Sep 26 2353 UTC Now Valid Until: 2016 Sep 28 2100 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: 1014 Issue Time: 2016 Sep 28 1045 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 28 1040 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.