Space Weather Message Code: WARK06 Serial Number: 388 Issue Time: 2017 Jul 16 1038 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2017 Jul 16 1040 UTC Valid To: 2017 Jul 16 1800 UTC Warning Condition: Onset 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

Space Weather Message Code: ALTK04 Serial Number: 1989 Issue Time: 2017 Jul 16 0607 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jul 16 0604 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: WARK04 Serial Number: 3247 Issue Time: 2017 Jul 16 0523 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jul 16 0520 UTC Valid To: 2017 Jul 17 0600 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: 1365 Issue Time: 2017 Jul 16 0521 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Jul 16 0520 UTC Valid To: 2017 Jul 16 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: WATA30 Serial Number: 161 Issue Time: 2017 Jul 14 1029 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: Jul 15: None (Below G1) Jul 16: G2 (Moderate) Jul 17: G2 (Moderate) 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 55 degrees Geomagnetic Latitude. Induced

Space Weather Message Code: WARK04 Serial Number: 3246 Issue Time: 2017 Jul 09 2347 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3245 Valid From: 2017 Jul 09 0023 UTC Now Valid Until: 2017 Jul 10 0900 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: 3245 Issue Time: 2017 Jul 09 1456 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3244 Valid From: 2017 Jul 09 0023 UTC Now Valid Until: 2017 Jul 09 2359 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: 1121 Issue Time: 2017 Jul 09 1021 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Jul 09 1020 UTC Synoptic Period: 0900-1200 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: 1120 Issue Time: 2017 Jul 09 0230 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Jul 09 0230 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: WARK05 Serial Number: 1363 Issue Time: 2017 Jul 09 0221 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Jul 09 0220 UTC Valid To: 2017 Jul 09 1500 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