FROM SPACE ENVIRONMENT SERVICES CENTER, BOULDER, COLORADO
SDF NUMBER 304
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY.
ISSUED 2200Z 30 OCT 1988
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 29/2100Z
TO 30/2100Z:  SOLAR ACTIVITY HAS BEEN LOW.  REGION 5200
(N21W89) CONTINUES TO PRODUCE INFREQUENT C-CLASS X-RAY
ACTIVITY AS IT ROTATES BEYOND THE WEST LIMB.  REGION 5212
(S16E48) CONTAINS SOME MAGNETIC COMPLEXITY BUT HAS ONLY
PRODUCED A FEW SUBFLARES SINCE YESTERDAY.  NEW REGION 5214
(N21W57) EMERGED NEAR REGION 5205 (N19W63) AND WAS NUMBERED
LATE YESTERDAY.  NEW REGIONS NUMBERED TODAY ARE 5215 (N24E59)
AND 5216 (N25E78), BOTH SMALL UNIPOLAR SUNSPOT GROUPS.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE
LOW TO MODERATE.  ISOLATED M-CLASS ACTIVITY IS POSSIBLE FROM
REGION 5212.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 29/2100Z TO 30/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET TO UNSETTLED
FOR THE PAST 24 HOURS.  A SUDDEN IMPULSE OF 20 NT WAS
OBSERVED AT BOULDER AT 30/2003Z.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTELED AT MIDDLE LATITUDES AND
MOSTLY ACTIVE AT HIGH LATITUDES.
III.  EVENT PROBABILITIES 31 OCT-02 NOV
CLASS M    30/30/30
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  OTTAWA 10.7 CM FLUX
OBSERVED           30 OCT  167
PREDICTED   31 OCT-02 NOV  160/155/150
90 DAY MEAN        30 OCT  159
V.  GEOMAGNETIC A INDICES
OBSERVED  AFR/AP 29 OCT  001/009
ESTIMATED AFR/AP 30 OCT  005/011
PREDICTED AFR/AP 31 OCT-02 NOV  010/018-015/020-010/016