FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 365
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 30 DEC 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 29/2100Z
TO 30/2100Z:  SOLAR ACTIVITY WAS HIGH. REGION 5292 (S19W35) HAD
AN X01/3B FLARE WITH A TENFLARE RADIO BURST, BUT NO SWEEPS, VERY
LATE IN THE PERIOD. THE REGION REGENERATED A MOST COMPLICATED
MAGNETIC DELTA SPOT IN THE TRAILING PORTION BEFORE THE EVENT.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. REGION 5292 CONTINUES TO PROVIDE A VERY SLIGHT CHANCE
OF HIGH ACTIVITY AND A PROTON PRODUCING FLARE.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 29/2100Z TO 30/2100Z:
THE GEOMAGNETIC FIELD WAS UNSETTLED.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE ACTIVE. THE MAJOR EVENT LATE TODAY WILL PROBABLY
PRODUCE AT LEAST ACTIVE LEVELS THE LAST HALF OF THE PERIOD AS
AN ENHANCEMENT, INSTEAD OF RETURNING TO RECURRENT UNSETTLED
CONDITIONS.
III.  EVENT PROBABILITIES 31 DEC-02 JAN
CLASS M    55/50/45
CLASS X    09/08/07
PROTON     09/08/07
PCAF       YELLOW
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           30 DEC  180
PREDICTED   31 DEC-02 JAN  170/160/155
90 DAY MEAN        30 DEC  176
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 29 DEC  018/019
ESTIMATED AFR/AP 30 DEC  014/014
PREDICTED AFR/AP 31 DEC-02 JAN  020/018-018/018-018/018