Space Weather Message Code: WARK04 Serial Number: 3644 Issue Time: 2019 Jul 11 0828 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jul 11 0830 UTC Valid To: 2019 Jul 11 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 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 3643 Issue Time: 2019 Jul 10 1132 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3642 Valid From: 2019 Jul 09 1830 UTC Now Valid Until: 2019 Jul 10 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: ALTK05 Serial Number: 1267 Issue Time: 2019 Jul 10 0727 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jul 10 0726 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: 1525 Issue Time: 2019 Jul 10 0522 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jul 10 0521 UTC Valid To: 2019 Jul 10 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: 3642 Issue Time: 2019 Jul 10 0254 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3641 Valid From: 2019 Jul 09 1830 UTC Now Valid Until: 2019 Jul 10 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: 1266 Issue Time: 2019 Jul 09 2029 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jul 09 2028 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: ALTK04 Serial Number: 2118 Issue Time: 2019 Jul 09 2009 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jul 09 2008 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: ALTK05 Serial Number: 1266 Issue Time: 2019 Jul 09 2029 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jul 09 2028 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: ALTK04 Serial Number: 2118 Issue Time: 2019 Jul 09 2009 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jul 09 2008 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: 3641 Issue Time: 2019 Jul 09 1828 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jul 09 1830 UTC Valid To: 2019 Jul 10 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