Space Weather Message Code: WARK04 Serial Number: 3555 Issue Time: 2018 Nov 05 0502 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3554 Valid From: 2018 Nov 04 1906 UTC Now Valid Until: 2018 Nov 05 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: 1251 Issue Time: 2018 Nov 05 0454 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2018 Nov 05 0454 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.

Space Weather Message Code: WARK06 Serial Number: 426 Issue Time: 2018 Nov 04 2239 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2018 Nov 04 2239 UTC Valid To: 2018 Nov 05 0300 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: ALTK05 Serial Number: 1250 Issue Time: 2018 Nov 04 2128 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2018 Nov 04 2127 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: ALTK05 Serial Number: 1249 Issue Time: 2018 Nov 04 2105 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2018 Nov 04 2059 UTC Synoptic Period: 1800-2100 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: 1503 Issue Time: 2018 Nov 04 2057 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2018 Nov 04 2056 UTC Valid To: 2018 Nov 05 0600 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: 2086 Issue Time: 2018 Nov 04 1936 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Nov 04 1934 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: WARK04 Serial Number: 3554 Issue Time: 2018 Nov 04 1906 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Nov 04 1906 UTC Valid To: 2018 Nov 05 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: WATA20 Serial Number: 842 Issue Time: 2018 Oct 31 2122 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 01: None (Below G1) Nov 02: None (Below G1) Nov 03: 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: WATA20 Serial Number: 841 Issue Time: 2018 Oct 17 1807 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 18: None (Below G1) Oct 19: G1 (Minor) Oct 20: None (Below G1) 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.