SOLAR ACTIVITY WAS LOW. REGION 8989 (N17E13) ENTERED A GROWTH PHASE DURING THE PERIOD AND DEVELOPED MIXED MAGNETIC FIELDS THAT MAY INCLUDE A WEAK DELTA CONFIGURATION. THIS REGION PRODUCED NUMEROUS C-CLASS EVENTS. THE LARGEST WAS A C9/SN FLARE AT 09/1740Z. SEVERAL LOW LEVEL C-CLASS EVENTS WERE OBSERVED FROM OTHER SMALL REGIONS. EARLY IN THE PERIOD, ANOTHER LARGE CORONAL MASS EJECTION BECAME VISIBLE IN THE LASCO CORONAGRAPH DATA. THIS SOUTHERN HEMISPHERE EVENT APPEARS TO HAVE ORIGINATED FROM YET ANOTHER FILAMENT ERUPTION IN THE SOUTH-CENTRAL PORTION OF THE SUN. A MODERATE SIZE H TYPE SPOT ROTATED ONTO THE DISK AND WAS NUMBERED AS REGION 8992 (N09E73).

SOLAR ACTIVITY SHOULD BE LOW TO MODERATE. REGION 8989 IS CAPABLE OF PRODUCING OCCASIONAL SMALL M-CLASS EVENTS. CONTINUED GROWTH HERE COULD RESULT IN THE DISSOLUTION OF SEVERAL NEARBY FILAMENTS.

THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.

THE GEOMAGNETIC FIELD SHOULD REMAIN QUIET TO UNSETTLED UNTIL MIDDAY ON 11 MAY WHEN A FILAMENT ERUPTION RELATED STORM IS EXPECTED TO BEGIN. PREDOMINANTLY ACTIVE TO MINOR STORM CONDITIONS ARE PREDICTED FROM THAT TIME THROUGH 13 MAY. ISOLATED PERIODS OF MAJOR STORMING ARE POSSIBLE DURING THE DISTURBANCE.

  觀測的       09 MAY 150
  預測的   10 MAY-12 MAY  158/162/165
  90天平均值        09 MAY 186

OBSERVED AFR/AP 08 MAY  006/006
ESTIMATED AFR/AP 09 MAY  008/008
PREDICTED AFR/AP 10 MAY-12 MAY  007/008-018/015-030/025