Space Weather Message Code: WARK05 Serial Number: 1286 Issue Time: 2016 Dec 08 1635 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Dec 08 1635 UTC Valid To: 2016 Dec 08 2300 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: ALTK04 Serial Number: 1939 Issue Time: 2016 Dec 08 1620 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Dec 08 1521 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

Space Weather Message Code: WARK04 Serial Number: 3072 Issue Time: 2016 Dec 08 1613 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Dec 08 1615 UTC Valid To: 2016 Dec 08 2359 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: WARK05 Serial Number: 1285 Issue Time: 2016 Dec 08 0900 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1284 Valid From: 2016 Dec 08 0437 UTC Now Valid Until: 2016 Dec 08 1300 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: WARK05 Serial Number: 1284 Issue Time: 2016 Dec 08 0438 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Dec 08 0437 UTC Valid To: 2016 Dec 08 0900 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: 3071 Issue Time: 2016 Dec 08 0436 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3070 Valid From: 2016 Dec 07 0855 UTC Now Valid Until: 2016 Dec 08 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 65 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK04 Serial Number: 1938 Issue Time: 2016 Dec 08 0301 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Dec 08 0259 UTC Synoptic Period: 0000-0300 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: 3070 Issue Time: 2016 Dec 07 1933 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3069 Valid From: 2016 Dec 07 0855 UTC Now Valid Until: 2016 Dec 07 0600 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 –

Space Weather Message Code: WARK04 Serial Number: 3069 Issue Time: 2016 Dec 07 1454 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3068 Valid From: 2016 Dec 07 0855 UTC Now Valid Until: 2016 Dec 07 2359 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 –

Space Weather Message Code: WARK04 Serial Number: 3068 Issue Time: 2016 Dec 07 0854 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Dec 07 0855 UTC Valid To: 2016 Dec 07 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