SOLAR ACTIVITY WAS LOW. A C6/SF AT 25/2107Z FROM REGION 8253 (N17E26) WAS THE HIGHLIGHT OF AN OTHERWISE QUIET DAY. TWO NEW REGIONS WERE NUMBERED, 8257 (N29W19) AND 8258 (S14E64), MAKING A TOTAL OF SIX SPOTTED REGIONS ON THE DISK.

SOLAR ACTIVITY IS EXPECTED TO BE LOW.

THE GEOMAGNETIC FIELD WAS AT MAJOR TO SEVERE STORM LEVELS DURING THE PAST 24 HOURS. A CORONAL MASS EJECTION WAS SEEN TO PASS THE ACE SPACECRAFT BEGINNING AT APPROXIMATELY 25/1600Z. THE LATTER HALF OF THE EVENT EXHIBITED STRONG, PROLONGED, SOUTHWARD MAGNETIC FIELDS FROM 25/2200Z TO 26/0600Z. THE SOLAR SOURCE OF THIS EJECTA IS LIKELY EITHER FROM ACTIVITY OCCURRING ON JUNE 20, OR JUNE 22. THE DISTURBANCE WEAKENEND DURING THE SECOND HALF OF THE PERIOD, GIVING WAY TO QUIET TO UNSETTLED CONDITIONS.

THE GEOMAGNETIC FIELD IS EXPECTED TO BE PRIMARILY UNSETTLED, WITH PERIODS OF ACTIVE CONDITIONS POSSIBLE DURING LOCAL NIGHTTIMES, FOR THE NEXT 24 HOURS. QUIET TO UNSETTLED CONDITIONS SHOULD PREVAIL BY THE END OF THE INTERVAL.

  觀測的       26 JUN 109
  預測的   27 JUN-29 JUN  110/115/115
  90天平均值        26 JUN 107

OBSERVED AFR/AP 25 JUN  010/010
ESTIMATED AFR/AP 26 JUN  035/045
PREDICTED AFR/AP 27 JUN-29 JUN  015/015-005/008-005/008