Space Weather Message Code: WARK05 Serial Number: 2080 Issue Time: 2025 Jul 15 1147 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 2079 Valid From: 2025 Jul 14 2051 UTC Now Valid Until: 2025 Jul 15 1800 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: ALTK05 Serial Number: 1828 Issue Time: 2025 Jul 15 1056 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2025 Jul 15 1056 UTC Synoptic Period: 0900-1200 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: 1827 Issue Time: 2025 Jul 15 0901 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2025 Jul 15 0859 UTC Synoptic Period: 0600-0900 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: 2079 Issue Time: 2025 Jul 15 0224 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 2078 Valid From: 2025 Jul 14 2051 UTC Now Valid Until: 2025 Jul 15 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: WARK04 Serial Number: 5035 Issue Time: 2025 Jul 15 0224 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5034 Valid From: 2025 Jul 14 1858 UTC Now Valid Until: 2025 Jul 15 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: ALTK05 Serial Number: 1826 Issue Time: 2025 Jul 14 2109 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2025 Jul 14 2059 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: ALTK04 Serial Number: 2576 Issue Time: 2025 Jul 14 2054 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2025 Jul 14 2035 UTC Synoptic Period: 1800-2100 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: 2078 Issue Time: 2025 Jul 14 2052 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2025 Jul 14 2051 UTC Valid To: 2025 Jul 15 0300 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: 5034 Issue Time: 2025 Jul 14 1859 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2025 Jul 14 1858 UTC Valid To: 2025 Jul 15 0300 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: 5033 Issue Time: 2025 Jul 13 1155 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5032 Valid From: 2025 Jul 11 0510 UTC Now Valid Until: 2025 Jul 13 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 –