Space Weather Message Code: WARK04 Serial Number: 2947 Issue Time: 2016 Aug 23 1833 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2946 Valid From: 2016 Aug 23 1247 UTC Now Valid Until: 2016 Aug 24 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 65 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 2946 Issue Time: 2016 Aug 23 1527 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2945 Valid From: 2016 Aug 23 1247 UTC Now Valid Until: 2016 Aug 23 2300 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: WARK05 Serial Number: 1209 Issue Time: 2016 Aug 23 1422 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Aug 23 1423 UTC Valid To: 2016 Aug 23 1600 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: ALTK04 Serial Number: 1913 Issue Time: 2016 Aug 23 1302 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Aug 23 1253 UTC Synoptic Period: 1200-1500 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: 2945 Issue Time: 2016 Aug 23 1247 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Aug 23 1247 UTC Valid To: 2016 Aug 23 1600 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: ALTK04 Serial Number: 1912 Issue Time: 2016 Aug 21 1807 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Aug 21 1759 UTC Synoptic Period: 1500-1800 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: 2944 Issue Time: 2016 Aug 21 1556 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Aug 21 1555 UTC Valid To: 2016 Aug 21 2100 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: WARK04 Serial Number: 2943 Issue Time: 2016 Aug 16 2312 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Aug 16 2311 UTC Valid To: 2016 Aug 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: ALTK04 Serial Number: 1911 Issue Time: 2016 Aug 12 0245 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Aug 12 0245 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: 2942 Issue Time: 2016 Aug 12 0238 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Aug 12 0238 UTC Valid To: 2016 Aug 12 1300 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