SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT OF THE PERIOD WAS A C4/SF IN REGION 8732 (N20W89) AT 22/0915Z. TWO TYPE II'S OCCURRED AT 22/0853Z AND 22/1300Z, LIKELY DUE TO THE CME ACTIVITY IN THE CLUSTER OF REGIONS TRANSITING THE NORTHWEST LIMB. REGIONS 8737 (S15W26) AND 8739 (S13E43) BOTH EXHIBITED GROWTH THIS PERIOD WITH REGION 8739 PRODUCING A 1F/SF AT 22/1929Z. NEW REGIONS 8740 (N27W83) AND 8741 (S25E64) WERE NUMBERED TODAY.

SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. AN ISOLATED M-CLASS EVENT IS STILL POSSIBLE FROM REGIONS 8731 (N12W79) AND REGION 8732, AS THEY ROTATE AROUND THE WEST LIMB. C-CLASS ACTIVITY IS LIKELY FROM REGIONS 8737 AND 8739. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 21/2100Z TO 22/2100Z: THE GEOMAGNETIC FIELD WAS AT ACTIVE TO SEVERE STORM LEVELS. THIS STORM WAS ASSOCIATED WITH THE SUDDEN IMPULSE (SI) OBSERVED AT 21/0226Z. A SUSTAINED PERIOD OF RELATIVE CALM FOLLOWED THE SI, BUT CONDITIONS CHANGED CONSIDERABLY AROUND 21/2240Z. A DRAMATIC CHANGE IN THE IMF BZ TO A STRONG SOUTHWARD ORIENTATION PRODUCED SEVERE CONDITIONS AT MID AND HIGH LATITUDES. THE DISTURBANCE BEGAN TO WANE SOON AFTER 22/1200Z. ACTIVE CONDITIONS HAVE PERSISTED SINCE.

THE GEOMAGNETIC FIELD IS EXPECTED TO BE AT ACTIVE TO MINOR STORM LEVELS WITH ISOLATED MAJOR STORM PERIODS LIKELY AT HIGH LATITUDES. A FAVORABLY POSITIONED GEOEFFECTIVE CORONAL HOLE SHOULD RESULT IN UNSETTLED TO ACTIVE CONDITIONS THROUGH ALL THREE DAYS.

  Geobserveerd       22 OCT 160
  Voorspeld   23 OCT-25 OCT  155/145/140
  90 Day Mean        22 OCT 158

OBSERVED AFR/AP 21 OCT  014/015
ESTIMATED AFR/AP 22 OCT  055/090
PREDICTED AFR/AP 23 OCT-25 OCT  025/040-020/030-020/020