Space Weather Message Code: WARK06 Serial Number: 429 Issue Time: 2019 Jan 31 2246 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2019 Jan 31 2247 UTC Valid To: 2019 Feb 01 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: 1257 Issue Time: 2019 Jan 31 2219 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jan 31 2219 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: 1510 Issue Time: 2019 Jan 31 2200 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 31 2201 UTC Valid To: 2019 Feb 01 0300 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: 2096 Issue Time: 2019 Jan 31 2156 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jan 31 2149 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: 3586 Issue Time: 2019 Jan 31 2029 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3585 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 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 –

Space Weather Message Code: WARK05 Serial Number: 1509 Issue Time: 2019 Jan 31 1346 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 31 1347 UTC Valid To: 2019 Jan 31 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: 3585 Issue Time: 2019 Jan 31 1317 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 31 1318 UTC Valid To: 2019 Jan 31 2100 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: 851 Issue Time: 2019 Jan 30 1617 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 31: G1 (Minor) Feb 01: G1 (Minor) Feb 02: 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. Induced

Space Weather Message Code: WATA20 Serial Number: 850 Issue Time: 2019 Jan 29 1943 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jan 30: None (Below G1) Jan 31: None (Below G1) Feb 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.

Space Weather Message Code: WARK04 Serial Number: 3584 Issue Time: 2019 Jan 25 1158 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3583 Valid From: 2019 Jan 23 2325 UTC Now Valid Until: 2019 Jan 25 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 –