Space Weather Message Code: ALTK05 Serial Number: 1184 Issue Time: 2017 Oct 14 0901 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Oct 14 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: WARK06 Serial Number: 409 Issue Time: 2017 Oct 14 0255 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 408 Valid From: 2017 Oct 13 1446 UTC Now Valid Until: 2017 Oct 14 0900 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 55 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1183 Issue Time: 2017 Oct 14 0131 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Oct 14 0130 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: 1182 Issue Time: 2017 Oct 13 2258 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Oct 13 2257 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: 1422 Issue Time: 2017 Oct 13 1944 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1421 Valid From: 2017 Oct 13 0420 UTC Now Valid Until: 2017 Oct 14 0900 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: 1181 Issue Time: 2017 Oct 13 1902 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Oct 13 1902 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: WATA20 Serial Number: 802 Issue Time: 2017 Oct 13 1722 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 14: G1 (Minor) Oct 15: None (Below G1) Oct 16: None (Below G1) 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.

Space Weather Message Code: ALTK05 Serial Number: 1180 Issue Time: 2017 Oct 13 1559 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Oct 13 1559 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: 3343 Issue Time: 2017 Oct 13 1513 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3342 Valid From: 2017 Oct 11 0150 UTC Now Valid Until: 2017 Oct 14 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: ALTK06 Serial Number: 453 Issue Time: 2017 Oct 13 1500 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Oct 13 1459 UTC Synoptic Period: 1200-1500 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