Space Weather Message Code: WARK04 Serial Number: 3591 Issue Time: 2019 Feb 03 0247 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 03 0247 UTC Valid To: 2019 Feb 03 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 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2097 Issue Time: 2019 Feb 02 1803 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Feb 02 1759 UTC Synoptic Period: 1500-1800 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: 3590 Issue Time: 2019 Feb 02 1629 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 02 1635 UTC Valid To: 2019 Feb 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: 3589 Issue Time: 2019 Feb 01 2220 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3588 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 02 1200 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: 3588 Issue Time: 2019 Feb 01 1456 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3587 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 2359 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: 1512 Issue Time: 2019 Feb 01 0854 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1511 Valid From: 2019 Jan 31 2201 UTC Now Valid Until: 2019 Feb 01 1500 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: 3587 Issue Time: 2019 Feb 01 0256 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3586 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 1500 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: 1511 Issue Time: 2019 Feb 01 0251 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1510 Valid From: 2019 Jan 31 2201 UTC Now Valid Until: 2019 Feb 01 0900 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: 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.