FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 253
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 09 SEP 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 08/2100Z
TO 09/2100Z:  SOLAR ACTIVITY HAS BEEN LOW.  ONLY INFREQUENT
C-CLASS X-RAY FLARES OCCURRED DURING THE PAST 24 HOURS.
NONE OF THESE FLARES WERE OPTICALLY CORRELATED.  NEW REGION
5145 (N17E20) EMERGED AS A SMALL BIPOLAR SUNSPOT GROUP.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW TO VERY LOW.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 08/2100Z TO 09/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO UNSETTLED LEVELS
FOR THE PAST 24 HOURS.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE FIRST DAY OF THE
FORECAST PERIOD.  ACTIVE TO MINOR STORM CONDITIONS ARE EXPECTED
ON 11 AND 12 SEPTEMBER DUE TO CORONAL HOLE EFFECTS.
III.  EVENT PROBABILITIES 10 SEP-12 SEP
CLASS M    01/01/01
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           09 SEP  126
PREDICTED   10 SEP-12 SEP  122/120/120
90 DAY MEAN        09 SEP  150
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 08 SEP  005/012
ESTIMATED AFR/AP 09 SEP  002/015
PREDICTED AFR/AP 10 SEP-12 SEP  010/020-018/030-018/030