Space Weather Message Code: ALTK07
Serial Number: 84
Issue Time: 2012 Mar 09 0724 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2012 Mar 09 0724 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Space Weather Message Code: WARPX1
Serial Number: 346
Issue Time: 2012 Mar 09 0723 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 345
Valid From: 2012 Mar 07 0030 UTC
Now Valid Until: 2012 Mar 10 0000 UTC
Warning Condition: persistence
Predicted NOAA Scale: S3 - Strong
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.