Space Weather Message Code: WATA20 Serial Number: 756 Issue Time: 2016 Dec 06 1810 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Dec 07: G1 (Minor) Dec 08: G1 (Minor) Dec 09: 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. Induced Currents

Space Weather Message Code: WARK04 Serial Number: 3067 Issue Time: 2016 Dec 06 1258 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2016 Dec 06 1300 UTC Valid To: 2016 Dec 06 1800 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: WATA20 Serial Number: 755 Issue Time: 2016 Dec 05 2053 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Dec 06: None (Below G1) Dec 07: None (Below G1) Dec 08: 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: 3066 Issue Time: 2016 Nov 26 0545 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3065 Valid From: 2016 Nov 24 0045 UTC Now Valid Until: 2016 Nov 26 1300 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: 3065 Issue Time: 2016 Nov 25 1440 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3064 Valid From: 2016 Nov 24 0045 UTC Now Valid Until: 2016 Nov 26 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: WARK05 Serial Number: 1281 Issue Time: 2016 Nov 25 1159 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1280 Valid From: 2016 Nov 25 0530 UTC Now Valid Until: 2016 Nov 25 1500 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 3064 Issue Time: 2016 Nov 25 1139 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3063 Valid From: 2016 Nov 24 0045 UTC Now Valid Until: 2016 Nov 25 2100 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: 1052 Issue Time: 2016 Nov 25 0702 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2016 Nov 25 0701 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: ALTK06 Serial Number: 422 Issue Time: 2016 Nov 25 0550 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2016 Nov 25 0550 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes 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 fluctuations can occur. High-latitude

Space Weather Message Code: WARK06 Serial Number: 367 Issue Time: 2016 Nov 25 0545 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2016 Nov 25 0545 UTC Valid To: 2016 Nov 25 0900 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