Space Weather Message Code: WARK04 Serial Number: 3664 Issue Time: 2019 Sep 09 1055 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Sep 09 1055 UTC Valid To: 2019 Sep 09 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: 2122 Issue Time: 2019 Sep 06 0503 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Sep 06 0503 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

Space Weather Message Code: WARK04 Serial Number: 3663 Issue Time: 2019 Sep 06 0451 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Sep 06 0451 UTC Valid To: 2019 Sep 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: WARK05 Serial Number: 1535 Issue Time: 2019 Sep 05 0527 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Sep 05 0527 UTC Valid To: 2019 Sep 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: 2121 Issue Time: 2019 Sep 05 0250 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Sep 05 0250 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: 3662 Issue Time: 2019 Sep 05 0247 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Sep 05 0247 UTC Valid To: 2019 Sep 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: WARK04 Serial Number: 3661 Issue Time: 2019 Sep 03 0240 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3660 Valid From: 2019 Aug 30 2035 UTC Now Valid Until: 2019 Sep 03 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: 3660 Issue Time: 2019 Sep 02 1455 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3659 Valid From: 2019 Aug 30 2035 UTC Now Valid Until: 2019 Sep 03 0300 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: 1283 Issue Time: 2019 Sep 02 0211 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Sep 02 0207 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: 1282 Issue Time: 2019 Sep 02 0003 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Sep 01 2359 UTC Synoptic Period: 2100-2400 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.