SOLAR ACTIVITY HAS BEEN LOW. REGION 9042 (N23W54) PRODUCED MOST OF TODAY'S C-CLASS EVENTS, INCLUDES THE LARGEST, A C5/SF AT 0023Z. REGIONS 9040 (N18W73) AND 9046 (N20W21) ALSO EXHIBITED SUBFLARE LEVEL BRIGHTENINGS DURING THE EVENT REGION 9042 HAS CONTINUED TO DECAY, ESPECIALLY IN THE TRAILER PORTION OF THE GROUP. REGION 9046 (N20W21) ALSO CONTRIBUTED A FEW C-CLASS EVENTS AND HAS SHOWN A SLIGHT DECREASE IN AREA. NEW REGION 9057 (N14E72) ROTATED INTO VIEW TODAY AS A SIMPLE H-TYPE REGION.

SOLAR ACTIVITY IS EXPECTED TO BE MOSTLY LOW, BUT THERE IS A CHANCE FOR AN ISOLATED M-CLASS EVENT SOMETIME DURING THE NEXT THREE DAYS. REGIONS 9042 AND 9046 ARE CONSIDERED TO BE THE MOST LIKELY SOURCES FOR M-CLASS FLARES.

THE GEOMAGNETIC FIELD RANGED FROM QUIET TO ACTIVE. QUIET TO UNSETTLED LEVELS PREDOMINATED FOR MOST OF THE DAY, BUT THERE WAS ONE ACTIVE PERIOD FROM 0000-0300Z. REAL-TIME SOLAR WIND OBSERVATIONS FROM THE ACE SPACECRAFT INDICATED A SOLAR SECTOR BOUNDARY CROSSING FROM AN 'AWAY' (POSITIVE) CONFIGURATION TO A 'TOWARDS' (NEGATIVE) CONFIGURATION BETWEEN 0100-1200Z.

THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOST UNSETTLED TOMORROW, BUT GRADUAL INCREASE TO UNSETTLED TO ACTIVE IS ANTICIPATED LATE TOMORROW OR BY THE SECOND DAY. THE INCREASE IS EXPECTED AS A RESPONSE TO THE INFLUENCE OF A RECURRENT CORONAL HOLE.

  觀測的       22 JUN 180
  預測的   23 JUN-25 JUN  175/175/170
  90天平均值        22 JUN 186

OBSERVED AFR/AP 21 JUN  006/008
ESTIMATED AFR/AP 22 JUN  012/012
PREDICTED AFR/AP 23 JUN-25 JUN  012/015-015/015-015/020