WARNING: Geomagnetic K-index of 5 expected -- Issue Time: 2013 Apr24 1442 UTC

Space Weather Message Code: WARK05
Serial Number: 830
Issue Time: 2013 Apr 24 1442 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Apr 24 1445 UTC
Valid To: 2013 Apr 24 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/NOAAscales

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: 831
Issue Time: 2013 Apr 24 2045 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 830
Valid From: 2013 Apr 24 1445 UTC
Now Valid Until: 2013 Apr 25 0900 UTC
Warning Condition: Persistence

Comment: Favorable conditions for a K-index of 5 persist.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/NOAAscales

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.