Space Weather Message Code: ALTK05 Serial Number: 988 Issue Time: 2016 Aug 03 0953 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Aug 03 0953 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: WARK06 Serial Number: 344 Issue Time: 2016 Aug 03 0858 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 343 Valid From: 2016 Aug 03 0420 UTC Now Valid Until: 2016 Aug 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: WARK06 Serial Number: 343 Issue Time: 2016 Aug 03 0412 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Aug 03 0420 UTC Valid To: 2016 Aug 03 0859 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: WARK05 Serial Number: 1206 Issue Time: 2016 Aug 03 0252 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1205 Valid From: 2016 Aug 02 2005 UTC Now Valid Until: 2016 Aug 03 1159 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: 986 Issue Time: 2016 Aug 03 0141 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Aug 03 0140 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: ALTK05 Serial Number: 985 Issue Time: 2016 Aug 02 2346 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Aug 02 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: ALTK04 Serial Number: 1903 Issue Time: 2016 Aug 02 2100 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Aug 02 2055 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: WARK06 Serial Number: 342 Issue Time: 2016 Aug 02 2012 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Aug 02 2012 UTC Valid To: 2016 Aug 02 2359 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: WARK06 Serial Number: 341 Issue Time: 2016 Aug 02 2011 UTC CANCEL WARNING: Geomagnetic K-Index of 6 expected Cancel Serial Number: 340 Original Issue Time: 2016 Aug 02 2008 UTC Comment: Cancelling and reissuing to correct end time to 02/2359 UTC. 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: WARK06 Serial Number: 340 Issue Time: 2016 Aug 02 2008 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Aug 02 2010 UTC Valid To: 2016 Aug 03 2359 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