Space Weather Message Code: WARK04 Serial Number: 2961 Issue Time: 2016 Sep 01 2330 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2960 Valid From: 2016 Sep 01 1937 UTC Now Valid Until: 2016 Sep 02 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: 993 Issue Time: 2016 Sep 01 2049 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 01 2049 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: WARK04 Serial Number: 2961 Issue Time: 2016 Sep 01 2330 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2960 Valid From: 2016 Sep 01 1937 UTC Now Valid Until: 2016 Sep 02 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: 994 Issue Time: 2016 Sep 01 2323 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 01 2323 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.

Space Weather Message Code: ALTK05 Serial Number: 993 Issue Time: 2016 Sep 01 2049 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 01 2049 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: ALTK05 Serial Number: 994 Issue Time: 2016 Sep 01 2323 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 01 2323 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.

Space Weather Message Code: ALTK05 Serial Number: 993 Issue Time: 2016 Sep 01 2049 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 01 2049 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: 1216 Issue Time: 2016 Sep 01 1950 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Sep 01 1947 UTC Valid To: 2016 Sep 01 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: ALTK04 Serial Number: 1917 Issue Time: 2016 Sep 01 1946 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Sep 01 1945 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: 2960 Issue Time: 2016 Sep 01 1937 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Sep 01 1937 UTC Valid To: 2016 Sep 02 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