FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 332
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 27 NOV 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 26/2100Z
TO 27/2100Z:  SOLAR ACTIVITY WAS MODERATE. REGION 5254 (S19E42)
PRODUCED AN M1/SF FLARE AT 26/2342Z AND REGION 5241 (N29W94)
PRODUCED AN M1/1N FLARE AT 27/0829Z. THERE WERE NO SIGNIFICANT
RADIO EMISSIONS ASSOCIATED WITH EITHER OF THESE FLARES. A
TYPE II RADIO SWEEP BURST WAS DETECTED AT 27/0219Z IN
CONJUNCTION WITH A C-CLASS SUBFLARE FROM REGION 5251 (N19E01).
THREE NEW REGIONS WERE ASSIGNED TODAY: 5256 (N23E02), A SIMPLE
BIPOLE WHICH WAS FORMERLY CONSIDERED AS THE TRAILER PORTION
OF 5251, 5257 (S17W08), A SMALL UNIPOLE, AND 5258 (N13E81), AN
H-TYPE GROUP WHICH MAY BE THE RETURN OF OLD REGION 5218.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW TO MODERATE. REGION 5254 RETAINS A MODERATE LEVEL OF
MAGNETIC COMPLEXITY PROVIDING A SLIGHT CHANCE FOR M-CLASS
ACTIVITY.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 26/2100Z TO 27/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN AT MOSTLY QUIET TO UNSETTLED
LEVELS FOR THE PAST 24 HOURS. AN INTERVAL OF ACTIVE LEVELS
OCCURRED MIDWAY THROUGH THE PERIOD.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED THROUGHOUT THE PERIOD.
III.  EVENT PROBABILITIES 28 NOV-30 NOV
CLASS M    25/25/25
CLASS X    10/10/10
PROTON     05/05/05
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           27 NOV  145
PREDICTED   28 NOV-30 NOV  146/149/151
90 DAY MEAN        27 NOV  161
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 26 NOV  019/018
ESTIMATED AFR/AP 27 NOV  010/012
PREDICTED AFR/AP 28 NOV-30 NOV  010/010-015/015-015/015