Space Weather Message Code: WARK04 Serial Number: 3194 Issue Time: 2017 Apr 08 0834 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3193 Valid From: 2017 Apr 07 2348 UTC Now Valid Until: 2017 Apr 08 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: 1969 Issue Time: 2017 Apr 07 2355 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Apr 07 2355 UTC Synoptic Period: 2100-2400 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: 3193 Issue Time: 2017 Apr 07 2349 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Apr 07 2348 UTC Valid To: 2017 Apr 08 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: ALTK04 Serial Number: 1968 Issue Time: 2017 Apr 06 0006 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Apr 05 2359 UTC Synoptic Period: 2100-0000 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: 3192 Issue Time: 2017 Apr 05 2250 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Apr 05 2250 UTC Valid To: 2017 Apr 06 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: 3191 Issue Time: 2017 Apr 04 1455 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3190 Valid From: 2017 Apr 04 0440 UTC Now Valid Until: 2017 Apr 04 2100 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: 1092 Issue Time: 2017 Apr 04 1152 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Apr 04 1152 UTC Synoptic Period: 0900-1200 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: 1091 Issue Time: 2017 Apr 04 0815 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Apr 04 0814 UTC Synoptic Period: 0600-0900 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: 1335 Issue Time: 2017 Apr 04 0734 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Apr 04 0733 UTC Valid To: 2017 Apr 04 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: ALTK04 Serial Number: 1967 Issue Time: 2017 Apr 04 0601 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Apr 04 0559 UTC Synoptic Period: 0300-0600 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