Space Weather Message Code: ALTK04 Serial Number: 1988 Issue Time: 2017 Jul 09 0209 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jul 09 0206 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: 3244 Issue Time: 2017 Jul 09 0024 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jul 09 0023 UTC Valid To: 2017 Jul 09 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: WATA20 Serial Number: 792 Issue Time: 2017 Jul 06 2034 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jul 07: None (Below G1) Jul 08: None (Below G1) Jul 09: G1 (Minor) 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: WATA20 Serial Number: 791 Issue Time: 2017 Jul 03 1411 UTC CANCEL WATCH: Geomagnetic Storm Category G1 Predicted Cancel Serial Number: 790 Original Issue Time: 2017 Jul 01 1954 UTC Comment: Solar wind parameters have returned to nominal levels following the passage of the 28 June CME and G1 (Minor) storm conditions are no longer likely. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation

Space Weather Message Code: WARK04 Serial Number: 3243 Issue Time: 2017 Jul 02 1456 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3242 Valid From: 2017 Jul 01 1640 UTC Now Valid Until: 2017 Jul 03 1500 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: 1119 Issue Time: 2017 Jul 02 0900 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Jul 02 0859 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: ALTK04 Serial Number: 1987 Issue Time: 2017 Jul 02 0642 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jul 02 0642 UTC Synoptic Period: 0600-0900 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: WARK05 Serial Number: 1362 Issue Time: 2017 Jul 02 0637 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Jul 02 0630 UTC Valid To: 2017 Jul 02 1300 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: 3241 Issue Time: 2017 Jul 01 2359 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3240 Valid From: 2017 Jul 01 1640 UTC Now Valid Until: 2017 Jul 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: WATA20 Serial Number: 790 Issue Time: 2017 Jul 01 1954 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jul 02: G1 (Minor) Jul 03: G1 (Minor) Jul 04: 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. Induced