SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT OF THE PERIOD WAS AN OPTICALLY UNCORRELATED C8 X-RAY BURST THAT OCCURRED AT 30/2345Z. RECENT MAGNETIC MAP ANALYSIS MADE IT CLEAR THAT REGION 8557 (S30E21) AND REGION 8560 (S24E22) SHOULD BE COMBINED AS A SINGLE BIPOLE GROUP. THEY HAVE BEEN COMBINED AS REGION 8557. THIS REGION DID PRODUCE A C4/SF AT 31/0810Z. REGION 8552 (N18W32) PRODUCED AN IMPULSIVE C2/SF WITH A TYPE II SWEEP AND A MINOR MULTI-FREQUENCY RADIO BURST AT 31/0940Z. NEW REGION 8562 (S15E22) EMERGED RAPIDLY IN THE LAST 24 HOURS AND HAS ALREADY PRODUCED LOW C-CLASS FLARING. NEW REGION 8563 (S25E63) WAS ALSO NUMBERED TODAY.

SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. BOTH REGION 8557 AND 8562 WILL LIKELY PRODUCE C-CLASS FLARING AND THEIR PROXIMITY TO EACH OTHER COULD RESULT IN AN M-CLASS EVENT. REGION 8552 AND 8558 (N16E30) ALSO HAVE POTENTIAL FOR C-CLASS FLARES.

THE GEOMAGNETIC FIELD WAS QUIET.

THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.

  觀測的       31 MAY 165
  預測的   01 JUN-03 JUN  165/165/165
  90天平均值        31 MAY 131

OBSERVED AFR/AP 30 MAY  003/005
ESTIMATED AFR/AP 31 MAY  005/010
PREDICTED AFR/AP 01 JUN-03 JUN  008/010-008/010-008/008