Space Weather Message Code: ALTK04 Serial Number: 2094 Issue Time: 2019 Jan 11 0859 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jan 11 0859 UTC Synoptic Period: 0600-0900 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: 3580 Issue Time: 2019 Jan 11 0817 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 11 0820 UTC Valid To: 2019 Jan 11 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: WARK04 Serial Number: 3579 Issue Time: 2019 Jan 05 2159 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 05 2159 UTC Valid To: 2019 Jan 06 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: 3578 Issue Time: 2019 Jan 05 1155 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3577 Valid From: 2019 Jan 04 2327 UTC Now Valid Until: 2019 Jan 05 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: ALTK05 Serial Number: 1255 Issue Time: 2019 Jan 05 0137 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jan 05 0137 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes 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 grid fluctuations can occur.

Space Weather Message Code: WARK05 Serial Number: 1507 Issue Time: 2019 Jan 05 0113 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 05 0113 UTC Valid To: 2019 Jan 05 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: ALTK04 Serial Number: 2093 Issue Time: 2019 Jan 05 0055 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jan 05 0055 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: 3577 Issue Time: 2019 Jan 04 2327 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 04 2327 UTC Valid To: 2019 Jan 05 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: WATA20 Serial Number: 848 Issue Time: 2019 Jan 02 2221 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 03: None (Below G1) Jan 04: None (Below G1) 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.

Space Weather Message Code: WARK04 Serial Number: 3576 Issue Time: 2018 Dec 31 0137 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 31 0140 UTC Valid To: 2018 Dec 31 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