Space Weather Message Code: WARK04 Serial Number: 3109 Issue Time: 2017 Jan 09 1155 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3108 Valid From: 2017 Jan 08 1840 UTC Now Valid Until: 2017 Jan 09 2359 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: 3108 Issue Time: 2017 Jan 08 2355 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3107 Valid From: 2017 Jan 08 1840 UTC Now Valid Until: 2017 Jan 09 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: 1946 Issue Time: 2017 Jan 08 1910 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jan 08 1910 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: 3107 Issue Time: 2017 Jan 08 1841 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jan 08 1840 UTC Valid To: 2017 Jan 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: WARK04 Serial Number: 3106 Issue Time: 2017 Jan 07 0554 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3105 Valid From: 2017 Jan 04 1902 UTC Now Valid Until: 2017 Jan 07 2359 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: WARK05 Serial Number: 1298 Issue Time: 2017 Jan 06 1436 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1297 Valid From: 2017 Jan 05 2322 UTC Now Valid Until: 2017 Jan 06 2359 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: 1297 Issue Time: 2017 Jan 06 0549 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1296 Valid From: 2017 Jan 05 2322 UTC Now Valid Until: 2017 Jan 06 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 3103 Issue Time: 2017 Jan 05 2332 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3102 Valid From: 2017 Jan 04 1902 UTC Now Valid Until: 2017 Jan 06 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: WARK05 Serial Number: 1296 Issue Time: 2017 Jan 05 2322 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Jan 05 2322 UTC Valid To: 2017 Jan 06 0600 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: 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.