MM#003 Major Flare Watch

Dear RHESSI Collaborators,

Target region, NOAA 1158, was the source of a major M6.6 event at 02/13/17:30 UT. The largest event since the M6 was a C9.4 at 02/14/12:45 UT. 1158 has a large magnetically complex E-type/gamma sunspot group. The intermediate portion of the sunspot group has a strong delta configuration with an E-W magnetic inversion line. There is a very good chance for another event equal to or greater than M5 in the next 24 hours.

The position of NOAA 1158 on February 14 at 13:30 UT is: S20W11 (Solar X = 174", Solar Y = -224")

See http://www.SolarMonitor.org for images and http://solar.physics.montana.edu/max_millennium/ops/observing.shtml for a description of the current Max Millennium Observing Plan.

Regards,

Bill Marquette (Helio Research)