Space Weather Message Code: WARK04 Serial Number: 3373 Issue Time: 2017 Nov 15 1610 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Nov 15 1610 UTC Valid To: 2017 Nov 15 2100 UTC Warning Condition: Onset 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 – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2016 Issue Time: 2017 Nov 15 1201 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Nov 15 1159 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes 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 – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3372 Issue Time: 2017 Nov 15 1111 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Nov 15 1110 UTC Valid To: 2017 Nov 15 1500 UTC Warning Condition: Onset 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 – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 3371 Issue Time: 2017 Nov 14 1602 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Nov 14 1603 UTC Valid To: 2017 Nov 14 2100 UTC Warning Condition: Onset 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 – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WATA20 Serial Number: 809 Issue Time: 2017 Nov 11 1157 UTC CANCEL WATCH: Geomagnetic Storm Category G1 Predicted Cancel Serial Number: 808 Original Issue Time: 2017 Nov 08 2037 UTC Comment: Current solar wind conditions no longer warrant G1 (Minor) geomagnetic storm levels. 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

Space Weather Message Code: WARK04 Serial Number: 3370 Issue Time: 2017 Nov 11 1153 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3369 Valid From: 2017 Nov 09 1615 UTC Now Valid Until: 2017 Nov 11 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: WARK04 Serial Number: 3369 Issue Time: 2017 Nov 10 1650 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3368 Valid From: 2017 Nov 09 1615 UTC Now Valid Until: 2017 Nov 11 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: ALTK04 Serial Number: 2015 Issue Time: 2017 Nov 10 1502 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Nov 10 1459 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes 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 – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3368 Issue Time: 2017 Nov 09 2328 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3367 Valid From: 2017 Nov 09 1615 UTC Now Valid Until: 2017 Nov 10 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: ALTK04 Serial Number: 2014 Issue Time: 2017 Nov 09 1743 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Nov 09 1735 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes 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 – Weak power grid fluctuations can occur. Aurora – Aurora may be