SOLAR ACTIVITY WAS MODERATE. REGION 8307 (N31E22) PRODUCED AN M2/1N FLARE AT 23/0934Z WITH A 2695 MHZ BURST OF 500 SFU. THIS REGION BEGAN A DECAY TREND DURING THE PERIOD. THE DELTA CONFIGURATION REMAINED IN THE NORTHERN PORTION OF THE REGION BUT OVERALL, THE MAGNETIC COMPLEXITY IS DECREASING. REGION 8310 (N24E33) PRODUCED A C3/SF FLARE AT 23/1125Z.

SOLAR ACTIVITY IS EXPECTED TO BECOME LOW TO MODERATE. CONTINUED DECAY AND SIMPLIFICATION IN REGION 8307 COULD RESULT IN A RAPID DECREASE OF FLARE PRODUCTION. ONLY OCCASIONAL M-CLASS EVENTS ARE EXPECTED FOR THE NEXT THREE DAYS. X-CLASS FLARES REMAIN SLIGHTLY POSSIBLE FROM THIS REGION THAT PRODUCED A TOTAL OF 4 X-CLASS EVENTS EARLY IN ITS VISIBLE HEMISPHERE TRANSIT.

THE GEOMAGNETIC FIELD WAS UNSETTLED AT MIDDLE LATITUDES AND UNSETTLED TO MINOR STORM LEVELS AT HIGH LATITUDES. THE MOST DISTURBED PERIOD WAS FROM 23/0000-0900Z. RECENT SOLAR WIND DATA SHOW AN INCREASE OF SOLAR WIND VELOCITY TO NEAR 600 KM/S AND DECREASE OF DENSITY TO 2-3 P/CC. THESE PARAMETERS INDICATE THE EARTH IS EMBEDDED IN A CORONAL HOLE STREAM. MAGNETIC DATA IMPLICATE THE EQUATORWARD EXTENSION OF THE NORTHERN CORONAL HOLE AS THE SOURCE OF THIS STREAM. THE ENERGETIC (GT 10 MEV) PROTON ENHANCEMENT THAT BEGAN ON 20 AUG CONTINUED THROUGH THE PERIOD AT A FLUX OF APPROXIMATELY 2 PFU.

THE GEOMAGNETIC FIELD SHOULD CONTINUE AT PREDOMINANTLY UNSETTLED TO ACTIVE LEVELS THROUGH 24 AUG. MINOR STORM INTERVALS ARE POSSIBLE DURING THAT TIME. A SLIGHTLY MORE INTENSE DISTURBANCE IS EXPECTED ON 25-26 AUG AS A RESULT OF THE M9 FLARE AND SUSPECTED CME OF 22 AUG. ACTIVE TO MINOR STORM LEVELS WITH ISOLATED PERIODS OF MAJOR STORMING ARE POSSIBLE FOR THAT PERIOD. THE PROTON ENHANCEMENT SHOULD DECAY SLOWLY OVER THE NEXT SEVERAL DAYS.

  觀測的       23 AUG 126
  預測的   24 AUG-26 AUG  127/128/130
  90天平均值        23 AUG 116

OBSERVED AFR/AP 22 AUG  013/023
ESTIMATED AFR/AP 23 AUG  015/020
PREDICTED AFR/AP 24 AUG-26 AUG  020/020-025/020-025/030