Space Weather Message Code: ALTK05 Serial Number: 1263 Issue Time: 2019 May 14 0512 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 May 14 0512 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: WARK04 Serial Number: 3629 Issue Time: 2019 May 14 0501 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3628 Valid From: 2019 May 14 0132 UTC Now Valid Until: 2019 May 14 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: ALTK04 Serial Number: 2113 Issue Time: 2019 May 14 0459 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 May 14 0500 UTC Synoptic Period: 0300-0600 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: 3628 Issue Time: 2019 May 14 0132 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 May 14 0132 UTC Valid To: 2019 May 15 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: 857 Issue Time: 2019 May 13 2004 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: May 14: None (Below G1) May 15: G1 (Minor) May 16: 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: 856 Issue Time: 2019 May 12 1412 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: May 13: None (Below G1) May 14: None (Below G1) May 15: 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: 3627 Issue Time: 2019 May 11 2055 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3626 Valid From: 2019 May 11 0152 UTC Now Valid Until: 2019 May 12 0600 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: 1519 Issue Time: 2019 May 11 1248 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 May 11 1250 UTC Valid To: 2019 May 11 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: 3626 Issue Time: 2019 May 11 1244 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3625 Valid From: 2019 May 11 0152 UTC Now Valid Until: 2019 May 11 2100 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: 3625 Issue Time: 2019 May 11 0544 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3624 Valid From: 2019 May 11 0152 UTC Now Valid Until: 2019 May 11 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 –