Space Weather Message Code: ALTK05 Serial Number: 1088 Issue Time: 2017 Mar 31 0308 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 31 0259 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: ALTK05 Serial Number: 1087 Issue Time: 2017 Mar 31 0003 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 30 2359 UTC Synoptic Period: 2100-0000 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: WARK04 Serial Number: 3183 Issue Time: 2017 Mar 30 2222 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3182 Valid From: 2017 Mar 27 0350 UTC Now Valid Until: 2017 Mar 31 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: WARK04 Serial Number: 3182 Issue Time: 2017 Mar 30 1145 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3181 Valid From: 2017 Mar 27 0350 UTC Now Valid Until: 2017 Mar 30 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: 1086 Issue Time: 2017 Mar 30 0606 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 30 0559 UTC Synoptic Period: 0300-0600 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: 1330 Issue Time: 2017 Mar 30 0525 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Mar 30 0524 UTC Valid To: 2017 Mar 30 1200 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: 3181 Issue Time: 2017 Mar 29 1154 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3180 Valid From: 2017 Mar 27 0350 UTC Now Valid Until: 2017 Mar 30 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: WARK04 Serial Number: 3180 Issue Time: 2017 Mar 28 2343 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3179 Valid From: 2017 Mar 27 0350 UTC Now Valid Until: 2017 Mar 29 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: 1085 Issue Time: 2017 Mar 28 0408 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 28 0405 UTC Synoptic Period: 0300-0600 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: WARK06 Serial Number: 375 Issue Time: 2017 Mar 28 0240 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 374 Valid From: 2017 Mar 27 1019 UTC Now Valid Until: 2017 Mar 28 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 55 degrees Geomagnetic Latitude. Induced Currents –