FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 333
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 28 NOV 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 27/2100Z
TO 28/2100Z:  SOLAR ACTIVITY WAS HIGH. REGION 5254 (S18E28)
PRODUCED AN M6/1B FLARE AT 27/2236Z. THIS EVENT WAS ACCOMPANIED
BY MINOR RADIO EMISSIONS. THE REGION PRODUCED SPORADIC C-CLASS
SUBFLARES DURING THE REMAINDER OF THE PERIOD. NO NEW REGIONS
WERE ASSIGNED TODAY.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW TO MODERATE. ISOLATED M-CLASS ACTIVITY IS POSSIBLE FROM
REGION 5254.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 27/2100Z TO 28/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO UNSETTLED
LEVELS FOR THE PAST 24 HOURS. A BRIEF INTERVAL OF ACTIVE
LEVELS OCCURRED NEAR MIDDAY AT HIGH LATITUDES.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED THROUGHOUT THE PERIOD.
III.  EVENT PROBABILITIES 29 NOV-01 DEC
CLASS M    30/30/30
CLASS X    10/10/10
PROTON     10/10/10
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           28 NOV  142
PREDICTED   29 NOV-01 DEC  144/146/148
90 DAY MEAN        28 NOV  161
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 27 NOV  012/011
ESTIMATED AFR/AP 28 NOV  009/011
PREDICTED AFR/AP 29 NOV-01 DEC  015/015-015/015-012/010