Space Weather Message Code: WARK04 Serial Number: 3603 Issue Time: 2019 Mar 01 1151 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3602 Valid From: 2019 Feb 27 1730 UTC Now Valid Until: 2019 Mar 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: 1516 Issue Time: 2019 Mar 01 0558 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1515 Valid From: 2019 Mar 01 0153 UTC Now Valid Until: 2019 Mar 01 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 60 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: WARK05 Serial Number: 1515 Issue Time: 2019 Mar 01 0154 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Mar 01 0153 UTC Valid To: 2019 Mar 01 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: WATA20 Serial Number: 854 Issue Time: 2019 Feb 28 1857 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Mar 01: G1 (Minor) Mar 02: None (Below G1) Mar 03: 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: ALTK05 Serial Number: 1259 Issue Time: 2019 Feb 28 1412 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Feb 28 1413 UTC Synoptic Period: 1200-1500 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: 1514 Issue Time: 2019 Feb 28 1400 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Feb 28 1400 UTC Valid To: 2019 Feb 28 2100 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: 3601 Issue Time: 2019 Feb 28 1340 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3600 Valid From: 2019 Feb 27 1730 UTC Now Valid Until: 2019 Mar 01 0300 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: 3600 Issue Time: 2019 Feb 28 0552 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3599 Valid From: 2019 Feb 27 1730 UTC Now Valid Until: 2019 Feb 28 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 –

Space Weather Message Code: ALTK05 Serial Number: 1258 Issue Time: 2019 Feb 28 0300 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Feb 28 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: WARK05 Serial Number: 1513 Issue Time: 2019 Feb 27 2311 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Feb 27 2311 UTC Valid To: 2019 Feb 28 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