Space Weather Message Code: ALTK05 Serial Number: 1060 Issue Time: 2017 Feb 01 1610 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Feb 01 1610 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: WARK04 Serial Number: 3124 Issue Time: 2017 Feb 01 1529 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3123 Valid From: 2017 Jan 31 0755 UTC Now Valid Until: 2017 Feb 02 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: 3123 Issue Time: 2017 Feb 01 0521 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3122 Valid From: 2017 Jan 31 0755 UTC Now Valid Until: 2017 Feb 01 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: 1059 Issue Time: 2017 Feb 01 0303 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Feb 01 0259 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: 1058 Issue Time: 2017 Feb 01 0001 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Jan 31 2359 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: WARK05 Serial Number: 1302 Issue Time: 2017 Jan 31 2340 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1301 Valid From: 2017 Jan 31 1455 UTC Now Valid Until: 2017 Feb 01 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK04 Serial Number: 3122 Issue Time: 2017 Jan 31 1455 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3121 Valid From: 2017 Jan 31 0755 UTC Now Valid Until: 2017 Feb 01 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: ALTK04 Serial Number: 1950 Issue Time: 2017 Jan 31 1001 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Jan 31 1000 UTC Synoptic Period: 0900-1200 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: 3121 Issue Time: 2017 Jan 31 0755 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Jan 31 0755 UTC Valid To: 2017 Jan 31 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: 767 Issue Time: 2017 Jan 29 1420 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 30: None (Below G1) Jan 31: G1 (Minor) Feb 01: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Comment: G1 conditions are anticipated due to effects from a negative polarity coronal hole. NOAA Space Weather Scale descriptions can be found at