Latest Alerts
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WARNING: Geomagnetic K-index of 4 expected K04W
Space Weather Message Code: WARK04
Serial Number: 4811
Issue Time: 2025 Jan 16 2048 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 16 2048 UTC
Valid To: 2025 Jan 17 1500 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.
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WARNING: Geomagnetic K-index of 4 expected K04W
Space Weather Message Code: WARK04
Serial Number: 4810
Issue Time: 2025 Jan 16 0243 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 16 0242 UTC
Valid To: 2025 Jan 16 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 - Aurora may be visible at high latitudes such as Canada and Alaska.
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K04WK04W
Space Weather Message Code: WARK04
Serial Number: 4809
Issue Time: 2025 Jan 15 1654 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4808
Valid From: 2025 Jan 15 0138 UTC
Now Valid Until: 2025 Jan 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.
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K04WK04W
Space Weather Message Code: WARK04
Serial Number: 4808
Issue Time: 2025 Jan 15 0854 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4807
Valid From: 2025 Jan 15 0138 UTC
Now Valid Until: 2025 Jan 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 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.
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ALERT: Geomagnetic K-index of 4 K04A
Space Weather Message Code: ALTK04
Serial Number: 2519
Issue Time: 2025 Jan 15 0302 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 15 0259 UTC
Synoptic Period: 0000-0300 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.
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WARNING: Geomagnetic K-index of 4 expected K04W
Space Weather Message Code: WARK04
Serial Number: 4807
Issue Time: 2025 Jan 15 0139 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 15 0138 UTC
Valid To: 2025 Jan 15 0900 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.