Space Weather Message Code: WATA20 Serial Number: 744 Issue Time: 2016 Oct 10 2158 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 11: None (Below G1) Oct 12: None (Below G1) Oct 13: 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: WARK04 Serial Number: 3009 Issue Time: 2016 Oct 10 0223 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Oct 10 0222 UTC Valid To: 2016 Oct 10 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

Space Weather Message Code: ALTK04 Serial Number: 1927 Issue Time: 2016 Oct 08 0605 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Oct 08 0559 UTC Synoptic Period: 0300-0600 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: 3008 Issue Time: 2016 Oct 08 0519 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Oct 08 0518 UTC Valid To: 2016 Oct 08 1000 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: 3007 Issue Time: 2016 Oct 05 0235 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3006 Valid From: 2016 Oct 04 1911 UTC Now Valid Until: 2016 Oct 05 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: ALTK04 Serial Number: 1926 Issue Time: 2016 Oct 04 2338 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2016 Oct 04 2338 UTC Synoptic Period: 2100-2400 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: 3006 Issue Time: 2016 Oct 04 1911 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Oct 04 1911 UTC Valid To: 2016 Oct 05 0300 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: 1250 Issue Time: 2016 Oct 04 1404 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2016 Oct 04 1405 UTC Valid To: 2016 Oct 04 1800 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: 3005 Issue Time: 2016 Oct 04 1155 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3004 Valid From: 2016 Oct 03 1855 UTC Now Valid Until: 2016 Oct 04 1800 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: 1023 Issue Time: 2016 Oct 04 0450 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Oct 04 0450 UTC Synoptic Period: 0300-0600 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.