Space Weather Message Code: WARK04 Serial Number: 3566 Issue Time: 2018 Nov 20 0520 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 20 0521 UTC Valid To: 2018 Nov 20 1200 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: 2089 Issue Time: 2018 Nov 11 0003 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Nov 10 2359 UTC Synoptic Period: 2100-2400 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: 3565 Issue Time: 2018 Nov 10 1945 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 10 1940 UTC Valid To: 2018 Nov 11 0900 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: 3564 Issue Time: 2018 Nov 10 1131 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3563 Valid From: 2018 Nov 09 1610 UTC Now Valid Until: 2018 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: WARK04 Serial Number: 3563 Issue Time: 2018 Nov 09 2248 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3562 Valid From: 2018 Nov 09 1610 UTC Now Valid Until: 2018 Nov 10 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: 2088 Issue Time: 2018 Nov 09 2153 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Nov 09 2153 UTC Synoptic Period: 2100-2400 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: 3562 Issue Time: 2018 Nov 09 1612 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 09 1610 UTC Valid To: 2018 Nov 09 2300 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: 3561 Issue Time: 2018 Nov 08 0831 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3560 Valid From: 2018 Nov 08 0346 UTC Now Valid Until: 2018 Nov 08 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: 2087 Issue Time: 2018 Nov 08 0418 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Nov 08 0418 UTC Synoptic Period: 0300-0600 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: 3560 Issue Time: 2018 Nov 08 0348 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 08 0346 UTC Valid To: 2018 Nov 08 0900 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