______________________________________________________
Space Weather Message Code: ALTEF3
Serial Number: 3494
Issue Time: 2025 Jul 15 1212 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3493
Begin Time: 2025 Jul 14 1550 UTC
Yesterday Maximum 2MeV Flux: 1230 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
______________________________________________________
Space Weather Message Code: ALTTP2
Serial Number: 1422
Issue Time: 2025 Jul 15 1210 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Jul 15 1052 UTC
Estimated Velocity: 525 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
______________________________________________________
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 - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
Space Weather Message Code: WARK04
Serial Number: 5036
Issue Time: 2025 Jul 15 1147 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5035
Valid From: 2025 Jul 14 1858 UTC
Now Valid Until: 2025 Jul 15 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 - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
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.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
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.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
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 - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
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 - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
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.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
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 visible at high latitudes such as Canada and Alaska.
______________________________________________________
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 grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
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 - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
Space Weather Message Code: ALTEF3
Serial Number: 3493
Issue Time: 2025 Jul 14 1552 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Jul 14 1550 UTC
Station: GOES-19
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
______________________________________________________
Space Weather Message Code: ALTTP2
Serial Number: 1421
Issue Time: 2025 Jul 14 1135 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Jul 14 1045 UTC
Estimated Velocity: 205 km/s
Comment: Faint signature.
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
______________________________________________________
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 - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
Space Weather Message Code: ALTK05
Serial Number: 1825
Issue Time: 2025 Jul 13 0433 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jul 13 0433 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.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
Space Weather Message Code: WARK05
Serial Number: 2077
Issue Time: 2025 Jul 13 0419 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Jul 13 0418 UTC
Valid To: 2025 Jul 13 1200 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 grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
Space Weather Message Code: WARK04
Serial Number: 5032
Issue Time: 2025 Jul 12 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5031
Valid From: 2025 Jul 11 0510 UTC
Now Valid Until: 2025 Jul 13 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 - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
Space Weather Message Code: WARK04
Serial Number: 5031
Issue Time: 2025 Jul 12 0831 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5030
Valid From: 2025 Jul 11 0510 UTC
Now Valid Until: 2025 Jul 12 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 - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
______________________________________________________
Space Weather Message Code: WARK05
Serial Number: 2076
Issue Time: 2025 Jul 11 2043 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Jul 11 2040 UTC
Valid To: 2025 Jul 12 1200 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 grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
______________________________________________________
https://www.swpc.noaa.gov/products/alerts-watches-and-warnings