Moderate M 1.5 solar flare erupted on northeastern limb

moderate-m-1-5-solar-flare-erupted-on-northeastern-limb

A long duration solar flare measuring M1.5 at the peak time erupted from region located on Sun's northeastern limb. The event started at 07:01, peaked at 07:25 and ended at 07:45 UTC on Friday, October 11, 2013. CME was generated, but it is not Earth directed.

Associated with the event are 10 cm Radio Burst, and Type II and IV Radio Emissions. 

A 10 cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10 cm wavelength was double or greater than the initial 10 cm 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.

Type IV Radio Emissions occur in association with major eruptions on the sun and are typically associated with strong Coronal Mass Ejections and solar radiation storms.

***

Space Weather Message Code: ALTTP4
Serial Number: 427
Issue Time: 2013 Oct 11 0823 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 11 0717 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.

***

Space Weather Message Code: ALTTP2
Serial Number: 870
Issue Time: 2013 Oct 11 0809 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 11 0711 UTC
Estimated Velocity: 510 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: SUM10R
Serial Number: 589
Issue Time: 2013 Oct 11 0808 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 11 0725 UTC
Maximum Time: 2013 Oct 11 0725 UTC
End Time: 2013 Oct 11 0726 UTC
Duration: 1 minutes
Peak Flux: 380 sfu
Latest Penticton Noon Flux: 121 sfu
Description: A 10cm radio burst 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.

***

Sunspots

There are currently 8 numbered sunspot regions on the Sun. Sunspot AR 1865 has a 'beta-gamma-delta' magnetic field and harbors energy for powerful X-class solar flares. 

Sunspots – AR – October 11, 2013. Credit: SDO HMI

1856 – Beta
1857  – Alpha
1861 – Beta Gamma
1862 – Beta
1863 – Beta
1864 – Alpha
1865 – Beta Gamma Delta
1867 – Alpha

With all this minor to moderate flaring in the last couple of days we are still in weakest solar maximum in over 100 years. 

  • Follow Sun's activity in near-real time on SWS

Featured image credit: GOES, SDO, EVE SAM. Edit: The Watchers

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