Author Topic: [BAA-ebulletin 00563] Solar Flare Activity Warning  (Read 788 times)

Rick

  • Administrator
  • Galaxy Cluster
  • *
  • Posts: 6544
    • http://www.orpington-astronomy.org.uk
[BAA-ebulletin 00563] Solar Flare Activity Warning
« on: Feb 16, 2011, 10:45:14 »
(c) 2011 British Astronomical Association -- http://www.britastro.org/

There are several solar active regions observable at the current time, two of which are producing flares. Observations should be sent as soon as possible to the Solar Section Director with details of date, time (UT) of start, peak and end of flare event, location and intensity.

Big Bear Solar Observatory activity warning is reproduced below:

Solar activity is moderate.

Region NOAA 11158 produced an X-class flare yesterday (14th Feb)

Since then it remains magnetically complex. An X-class flare is still possible from this region. An M-class event is likely. A C-class flare is also possible from region NOAA 11161.

NOAA 11158, S21 W21 (X= 326,Y=-245). Beta-gamma-delta region. M-class flare likely, X-class possible.

NOAA 11161, N11 E45 (X=-676,Y= 264). Beta region. C-class flare possible.

Positions as of February 15, 2011 at 12:30 UT.

Lyn Smith
Director
Solar Section