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

Space Weather Message Code: ALTK05 Serial Number: 1573 Issue Time: 2024 May 02 1605 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 May 02 1605 UTC Synoptic Period: 1500-1800 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: ALTK05 Serial Number: 1572 Issue Time: 2024 May 02 1450 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 May 02 1448 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: ALTK04 Serial Number: 2444 Issue Time: 2024 May 02 1422 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 May 02 1422 UTC Synoptic Period: 1200-1500 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: WARK05 Serial Number: 1870 Issue Time: 2024 May 02 1351 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 May 02 1355 UTC Valid To: 2024 May 02 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: 4601 Issue Time: 2024 May 02 1332 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 May 02 1335 UTC Valid To: 2024 May 03 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: WARSUD Serial Number: 221 Issue Time: 2024 May 02 1329 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2024 May 02 1404 UTC Valid To: 2024 May 02 1434 UTC IP Shock Passage Observed: 2024 May 02 1317 UTC NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation

Space Weather Message Code: WARK04 Serial Number: 4600 Issue Time: 2024 May 01 0226 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4599 Valid From: 2024 Apr 30 2242 UTC Now Valid Until: 2024 May 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 65 degrees Geomagnetic Latitude. Induced Currents –