Space Weather Message Code: ALTK05 Serial Number: 1002 Issue Time: 2016 Sep 04 0300 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 04 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: ALTK04 Serial Number: 1918 Issue Time: 2016 Sep 04 0117 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Sep 04 0116 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: 2966 Issue Time: 2016 Sep 04 0112 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Sep 04 0111 UTC Valid To: 2016 Sep 04 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: ALTK05 Serial Number: 1001 Issue Time: 2016 Sep 03 2345 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 03 2345 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: WARK05 Serial Number: 1224 Issue Time: 2016 Sep 03 1835 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1223 Valid From: 2016 Sep 03 1330 UTC Now Valid Until: 2016 Sep 04 0600 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK05 Serial Number: 1223 Issue Time: 2016 Sep 03 1328 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Sep 03 1330 UTC Valid To: 2016 Sep 03 1900 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: WATA20 Serial Number: 740 Issue Time: 2016 Sep 03 1033 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Sep 04: G1 (Minor) Sep 05: None (Below G1) Sep 06: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT 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.

Space Weather Message Code: WARK06 Serial Number: 349 Issue Time: 2016 Sep 03 0849 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 348 Valid From: 2016 Sep 03 0444 UTC Now Valid Until: 2016 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 55 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1000 Issue Time: 2016 Sep 03 0844 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Sep 03 0843 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: ALTK06 Serial Number: 411 Issue Time: 2016 Sep 03 0600 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2016 Sep 03 0559 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 – Moderate 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 – Power grid fluctuations can occur. High-latitude