Space Weather Message Code: ALTK05 Serial Number: 1271 Issue Time: 2019 Aug 05 1622 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Aug 05 1622 UTC Synoptic Period: 1500-1800 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: 1527 Issue Time: 2019 Aug 05 1443 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1526 Valid From: 2019 Aug 05 0705 UTC Now Valid Until: 2019 Aug 05 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1270 Issue Time: 2019 Aug 05 1246 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Aug 05 1246 UTC Synoptic Period: 1200-1500 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: WARK06 Serial Number: 431 Issue Time: 2019 Aug 05 1053 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2019 Aug 05 1053 UTC Valid To: 2019 Aug 05 1500 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: ALTK05 Serial Number: 1268 Issue Time: 2019 Aug 05 0813 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Aug 05 0813 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: WARK06 Serial Number: 431 Issue Time: 2019 Aug 05 1053 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2019 Aug 05 1053 UTC Valid To: 2019 Aug 05 1500 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: ALTK05 Serial Number: 1269 Issue Time: 2019 Aug 05 1032 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Aug 05 1031 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: 1268 Issue Time: 2019 Aug 05 0813 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Aug 05 0813 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: 2119 Issue Time: 2019 Aug 05 0732 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Aug 05 0731 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: 1526 Issue Time: 2019 Aug 05 0707 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Aug 05 0705 UTC Valid To: 2019 Aug 05 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