SOLAR ACTIVITY WAS LOW. TODAY'S ACTIVITY CONSISTED OF A FEW, LOW LEVEL C-CLASS EVENTS. OF THE 10 SPOTTED REGIONS ON THE DISK, NEW REGION 8731 (N10E62) WAS THE MOST ACTIVE WITH FREQUENT POINT BRIGHTENINGS AND PLAGE FLUCTUATIONS. REGION 8728 (N22E38) IS THE LARGEST GROUP ON THE DISK AT 560 MILLIONTHS AND SHOWS SOME MAGNETIC COMPLEXITY. THIS GROUP HAS INCREASED SIGNIFICANTLY OVER THE LAST 24 HOURS.

SOLAR ACTIVITY IS EXPECTED TO BE MOSTLY LOW, BUT THERE IS A GOOD CHANCE FOR AN ISOLATED M-CLASS EVENT SOMETIME OVER THE NEXT THREE DAYS, ESPECIALLY GIVEN THE GROWTH AND COMPLEXITY OF REGION 8728. REGION 8731 IS EXPECTED TO PRODUCE OCCASIONAL C-CLASS FLARES OVER THE NEXT THREE DAYS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 10/2100Z TO 11/2100Z: THE GEOMAGNETIC FIELD WAS AT QUIET TO ACTIVE LEVELS DURING THE PAST 24 HOURS. ACTIVE LEVELS DOMINATED FROM 0000-1500Z. SOLAR WIND MEASUREMENTS INDICATED THAT THE ACTIVITY WAS DUE TO A HIGH-SPEED, LOW-DENSITY CORONAL HOLE ASSOCIATED SOLAR WIND STREAM. THE GREATER THAN 2 MEV ELECTRONS ATTAINED HIGH FLUX VALUES DURING THE PAST 24 HOURS.

THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE DURING THE NEXT 24 HOURS AS THE CURRENT DISTURBANCE SUBSIDES. A NEW ENHANCEMENT IN GEOMAGNETIC ACTIVITY IS EXPECTED ON THE 2ND AND 3RD DAYS AS A NEW SOLAR CORONAL HOLE WILL BE ROTATING INTO A GEOEFFECTIVE POSITION. MID-LATITUDES ARE FORECAST TO BE ACTIVE AND HIGH LATITUDES ARE EXPECTED TO BE AT MINOR STORM LEVELS.

  Geobserveerd       11 OCT 167
  Voorspeld   12 OCT-14 OCT  170/175/180
  90 Day Mean        11 OCT 154

OBSERVED AFR/AP 10 OCT  018/028
ESTIMATED AFR/AP 11 OCT  020/022
PREDICTED AFR/AP 12 OCT-14 OCT  015/020-020/030-020/035