Space Weather Message Code: WARK04 Serial Number: 3160 Issue Time: 2017 Mar 07 0542 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3159 Valid From: 2017 Mar 06 1325 UTC Now Valid Until: 2017 Mar 07 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: ALTK05 Serial Number: 1073 Issue Time: 2017 Mar 06 2000 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 06 2000 UTC Synoptic Period: 1800-2100 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: 1319 Issue Time: 2017 Mar 06 1952 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Mar 06 1952 UTC Valid To: 2017 Mar 06 2359 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: 3159 Issue Time: 2017 Mar 06 1726 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3158 Valid From: 2017 Mar 06 1325 UTC Now Valid Until: 2017 Mar 07 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: 1961 Issue Time: 2017 Mar 06 1454 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Mar 06 1453 UTC Synoptic Period: 1200-1500 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: 3158 Issue Time: 2017 Mar 06 1324 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Mar 06 1325 UTC Valid To: 2017 Mar 06 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: ALTK04 Serial Number: 1960 Issue Time: 2017 Mar 06 0214 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Mar 06 0213 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: 3157 Issue Time: 2017 Mar 06 0210 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Mar 06 0210 UTC Valid To: 2017 Mar 06 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: 1959 Issue Time: 2017 Mar 05 2022 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Mar 05 2022 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: 3156 Issue Time: 2017 Mar 05 1939 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Mar 05 1938 UTC Valid To: 2017 Mar 05 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