Third M-class solar flare in last 24 hours – Impulsive M4.2 with Earth directed CME
Image credit: NASA SDO
After two M1.0 solar flares today, AR 1875 treated us with another one. At 21:20 UTC an impulsive solar flare measuring M4.2 erupted. A Type II Radio Emission was registered indicating a Coronal Mass Ejection was associated with the event. AR 1875 is in geoeffective position.
Additionally, a 10cm radio burst was associated with the event. This indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Space Weather Message Code: ALTTP2
Serial Number: 876
Issue Time: 2013 Oct 22 2153 UTC
ALERT: Type II Radio Emission
Begin Time: 2013 Oct 22 2122 UTC
Estimated Velocity: 1955 km/s
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Space Weather Message Code: SUM10R
Serial Number: 590
Issue Time: 2013 Oct 22 2134 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 22 2118 UTC
Maximum Time: 2013 Oct 22 2118 UTC
End Time: 2013 Oct 22 2119 UTC
Duration: 1 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 146 sfu
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Previous eruptions of the day:
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