Space Weather Message Code: ALTK04 Serial Number: 2091 Issue Time: 2018 Dec 09 2304 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Dec 09 2304 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: 3571 Issue Time: 2018 Dec 09 2243 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 09 2244 UTC Valid To: 2018 Dec 10 0900 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: 3570 Issue Time: 2018 Dec 07 1945 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 07 1945 UTC Valid To: 2018 Dec 08 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: 847 Issue Time: 2018 Dec 03 1835 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Dec 04: None (Below G1) Dec 05: G1 (Minor) Dec 06: 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.

Space Weather Message Code: WARK04 Serial Number: 3569 Issue Time: 2018 Dec 03 1507 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 03 1510 UTC Valid To: 2018 Dec 03 2200 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: 2090 Issue Time: 2018 Dec 02 2359 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2018 Dec 02 2359 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: 3568 Issue Time: 2018 Dec 02 2351 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 02 2350 UTC Valid To: 2018 Dec 02 2359 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: 3567 Issue Time: 2018 Dec 01 1725 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2018 Dec 01 1725 UTC Valid To: 2018 Dec 02 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: 846 Issue Time: 2018 Nov 29 1438 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 30: None (Below G1) Dec 01: G1 (Minor) Dec 02: 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

Space Weather Message Code: WATA20 Serial Number: 845 Issue Time: 2018 Nov 28 1818 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 29: None (Below G1) Nov 30: None (Below G1) Dec 01: 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.