Space Weather Message Code: WATA20 Serial Number: 763 Issue Time: 2017 Jan 05 2120 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 06: G1 (Minor) Jan 07: None (Below G1) Jan 08: 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: WARK04 Serial Number: 3102 Issue Time: 2017 Jan 05 1753 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3101 Valid From: 2017 Jan 04 1902 UTC Now Valid Until: 2017 Jan 06 0300 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: 3101 Issue Time: 2017 Jan 05 0255 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3100 Valid From: 2017 Jan 04 1902 UTC Now Valid Until: 2017 Jan 05 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: 1945 Issue Time: 2017 Jan 04 1939 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jan 04 1936 UTC Synoptic Period: 1800-2100 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: 3100 Issue Time: 2017 Jan 04 1901 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jan 04 1902 UTC Valid To: 2017 Jan 05 0300 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: 3099 Issue Time: 2017 Jan 04 0555 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3098 Valid From: 2017 Jan 03 0832 UTC Now Valid Until: 2017 Jan 04 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: 3098 Issue Time: 2017 Jan 03 1749 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3097 Valid From: 2017 Jan 03 0832 UTC Now Valid Until: 2017 Jan 04 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: ALTK04 Serial Number: 1944 Issue Time: 2017 Jan 03 1111 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jan 03 1110 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: 3097 Issue Time: 2017 Jan 03 0831 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jan 03 0832 UTC Valid To: 2017 Jan 03 1800 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: 762 Issue Time: 2017 Jan 02 1947 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 03: None (Below G1) Jan 04: G1 (Minor) Jan 05: 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