FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 256
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 12 SEP 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 11/2100Z
TO 12/2100Z:  SOLAR ACTIVITY HAS BEEN LOW.  NEW REGION
5149 (S21W10) EMERGED AS A SMALL BIPOLAR SUNSPOT GROUP.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW.  THERE IS A VERY SLIGHT CHANCE OF M-CLASS FLARE ACTIVITY.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 11/2100Z TO 12/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO MAJOR STORM LEVELS
FOR THE PAST 24 HOURS.  A MINOR GEOMAGNETIC STORM BEGAN AT
BOULDER AT 10/2100Z.  THE STORM ENDED AT BOULDER AT 12/0600Z.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED AT MIDDLE LATITUDES AND
MOSTLY ACTIVE AT HIGH LATITUDES.
III.  EVENT PROBABILITIES 13 SEP-15 SEP
CLASS M    10/10/10
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           12 SEP  125
PREDICTED   13 SEP-15 SEP  128/128/130
90 DAY MEAN        12 SEP  150
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 11 SEP  033/065
ESTIMATED AFR/AP 12 SEP  016/035
PREDICTED AFR/AP 13 SEP-15 SEP  010/025-007/020-007/018