Space Weather Message Code: ALTK04 Serial Number: 2445 Issue Time: 2024 May 05 2333 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 May 05 2333 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: 4603 Issue Time: 2024 May 05 1932 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 May 05 1930 UTC Valid To: 2024 May 06 1200 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: WATA30 Serial Number: 230 Issue Time: 2024 May 03 2059 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: May 04: None (Below G1) May 05: G1 (Minor) May 06: G2 (Moderate) 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 55 degrees Geomagnetic Latitude. Induced

Space Weather Message Code: ALTK07 Serial Number: 142 Issue Time: 2024 May 02 2100 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 May 02 2059 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G3 – Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents – Power system voltage irregularities possible, false

Space Weather Message Code: WARK04 Serial Number: 4602 Issue Time: 2024 May 02 2056 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4601 Valid From: 2024 May 02 1335 UTC Now Valid Until: 2024 May 03 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: ALTK06 Serial Number: 555 Issue Time: 2024 May 02 1917 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 May 02 1917 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes 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 fluctuations can occur. High-latitude

Space Weather Message Code: ALTK05 Serial Number: 1574 Issue Time: 2024 May 02 1904 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 May 02 1904 UTC Synoptic Period: 1800-2100 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: ALTK07 Serial Number: 141 Issue Time: 2024 May 02 1803 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 May 02 1759 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G3 – Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents – Power system voltage irregularities possible, false

Space Weather Message Code: WARK07 Serial Number: 101 Issue Time: 2024 May 02 1639 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 May 02 1640 UTC Valid To: 2024 May 02 2100 UTC Warning Condition: Onset NOAA Scale: G3 or greater NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK06 Serial Number: 554 Issue Time: 2024 May 02 1624 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 May 02 1624 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes 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 fluctuations can occur. High-latitude