:Product: 19980413RSGA.txt
:Issued: 1998 Apr 13 2200 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY
SDF NUMBER 103 ISSUED AT 2200Z ON 13 APR 1998
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM  12/2100Z
TO 13/2100Z:  SOLAR ACTIVITY WAS LOW, BY VIRTUE OF A SINGLE C1/SF
FLARE FROM REGION 8202 (S26E06) AT 13/0350Z. THE REMAINDER OF THE
VISIBLE DISK HAS BEEN QUIET AND UNREMARKABLE.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 12/2100Z TO 13/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN QUIET FOR THE PAST 24 HOURS.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET, WITH ISOLATED PERIODS OF UNSETTLED
CONDITIONS, FOR THE NEXT THREE DAYS..
III.  EVENT PROBABILITIES 14 APR-16 APR
CLASS M    01/01/01
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  PENTICTON 10.7 CM FLUX
OBSERVED           13 APR 115
PREDICTED   14 APR-16 APR  112/110/108
90 DAY MEAN        13 APR 104
V.  GEOMAGNETIC A INDICES
OBSERVED AFR/AP 12 APR  004/009
ESTIMATED AFR/AP 13 APR  004/010
PREDICTED AFR/AP 14 APR-16 APR  005/008-005/008-010/008
VI.  GEOMAGNETIC ACTIVITY PROBABILITIES 14 APR-16 APR
A.  MIDDLE LATITUDES
ACTIVE                15/15/15
MINOR STORM           10/10/10
MAJOR-SEVERE STORM    01/01/01
B.  HIGH LATITUDES
ACTIVE                15/15/15
MINOR STORM           10/10/10
MAJOR-SEVERE STORM    01/01/01