FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 254
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 10 SEP 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 09/2100Z
TO 10/2100Z:  SOLAR ACTIVITY HAS BEEN LOW.  NEW REGIONS
5146 (N31W67) AND 5147 (S26W33) EMERGED AS SMALL BIPOLAR
SUNSPOT GROUPS.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW TO VERY LOW.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 09/2100Z TO 10/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO ACTIVE LEVELS
FOR THE PAST 24 HOURS.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE ACTIVE ON 11 AND 12 SEPTEMBER DUE TO CORONAL
HOLE EFFECTS.
III.  EVENT PROBABILITIES 11 SEP-13 SEP
CLASS M    01/01/01
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           10 SEP  114
PREDICTED   11 SEP-13 SEP  110/110/110
90 DAY MEAN        10 SEP  150
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 09 SEP  003/011
ESTIMATED AFR/AP 10 SEP  004/020
PREDICTED AFR/AP 11 SEP-13 SEP  018/025-018/025-007/020