SOLAR ACTIVITY BECAME MODERATE. REGION 8340 (N19W92) PRODUCED A LONG DURATION M2/2N FLARE AT 30/1350Z. THIS EVENT WAS ACCOMPANIED BY STRONG TYPE II/IV SWEPT FREQUENCY EVENTS AND A 490 SFU BURST AT 2695 MHZ. MUCH MATERIAL MOTION WAS VISIBLE ALONG AND ABOVE THE NORTHWEST LIMB IN THE FORM OF BRIGHT SURGES, ERUPTIVE PROMINENCES, AND LOOP PROMINENCE SYSTEMS. OTHER REGIONS ON THE DISK WERE STABLE OR SLOWLY DECAYING.

SOLAR ACTIVITY SHOULD BECOME VERY LOW TO LOW AS THE REGIONS AT OR OVER THE NORTHWEST LIMB BECOME LESS VISIBLE DUE TO SOLAR ROTATION. THERE IS A SLIGHT POSSIBILITY REGION 8340 MAY PRODUCE ANOTHER M-CLASS EVENT FROM BEHIND THE WEST LIMB BETWEEN NOW AND 02 OCT.

THE GEOMAGNETIC FIELD WAS QUIET TO SLIGHTLY UNSETTLED. THE GREATER THAN 100 MEV PROTON FLUX CROSSED THE 1 PFU THRESHOLD AT 30/1435Z AND REACHED A MAXIMUM OF 3 PFU DURING THE PERIOD. THE GREATER THAN 10 MEV FLUX REACHED EVENT THRESHOLD OF 10 PFU AT 30/1520Z. DURING THE PERIOD, A MAXIMUM FLUX OF 840 PFU WAS OBSERVED. A POLAR CAP ABSORPTION EVENT ACCOMPANIED THE PROTON EVENT. A MAXIMUM ABSORPTION OF 4.3 DB WAS OBSERVED AT THE END OF THE PERIOD. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT WERE AT MODERATE TO HIGH LEVELS.

THE GEOMAGNETIC FIELD IS FORECAST TO BE QUIET TO UNSETTLED FOR 01-02 OCT. UNSETTLED TO SLIGHTLY ACTIVE CONDITIONS ARE POSSIBLE ON 03 OCT. THE GREATER THAN 10 MEV PROTON EVENT IS EXPECTED TO SLOWLY DECAY OVER THE NEXT THREE DAYS.

  觀測的       30 SEP 122
  預測的   01 OCT-03 OCT  110/107/105
  90天平均值        30 SEP 130

OBSERVED AFR/AP 29 SEP  006/010
ESTIMATED AFR/AP 30 SEP  004/010
PREDICTED AFR/AP 01 OCT-03 OCT  008/012-008/010-010/020