R1 Radio Blackout
Quoting: #Geomagnetic_Storm# TWO NOAA Alerts issued-
Space Weather Message Code: ALTTP2
Serial Number: 833
Issue Time: 2013 Jan 11 0940 UTC
ALERT: Type II Radio EmissionBegin Time: 2013 Jan 11 0914 UTC
Estimated Velocity: 537 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: ALTTP4
Serial Number: 399
Issue Time: 2013 Jan 11 1006 UTC
ALERT: Type IV Radio EmissionBegin Time: 2013 Jan 11 0930 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are
typically associated with strong coronal mass ejections and solar radiation storms.forgot link: [
link to www.swpc.noaa.gov]