:Product: 19980226RSGA.txt
:Issued: 1998 Feb 26 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 057 ISSUED AT 2200Z ON 26 FEB 1998
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM  25/2100Z
TO 26/2100Z:  SOLAR ACTIVITY WAS VERY LOW. REGION 8167 (S26W09)
PRODUCED A B7/SF WITH SEVERAL ERUPTIVE CENTERS AT 26/1554Z. REGION
8164 (N16W25), CURRENTLY THE LARGEST REGION ON THE VISIBLE DISK,
REMAINED QUIET WITH AN 18 SPOT DAI BETA MAG CLASS. REMAINING REGIONS
WERE STABLE.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. THOUGH QUIET FOR THE PAST 24 HOURS, REGION 8164
MAINTAINS POTENTIAL FOR C-CLASS ACTIVITY.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 25/2100Z TO 26/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET FOR THE NEXT 24 HOURS. MOSTLY QUIET TO
UNSETTLED CONDITIONS  ARE EXPECTED FOR THE REMAINDER OF THE PERIOD
WITH A SMALL CHANCE FOR ACTIVE PERIODS LATE ON THE 27TH THROUGH
28TH.
III.  EVENT PROBABILITIES 27 FEB-01 MAR
CLASS M    05/05/05
CLASS X    01/01/01
PROTON     01/01/01
PCAF       GREEN
IV.  PENTICTON 10.7 CM FLUX
OBSERVED           26 FEB 093
PREDICTED   27 FEB-01 MAR  093/092/090
90 DAY MEAN        26 FEB 096
V.  GEOMAGNETIC A INDICES
OBSERVED AFR/AP 25 FEB  001/004
ESTIMATED AFR/AP 26 FEB  002/005
PREDICTED AFR/AP 27 FEB-01 MAR  005/008-010/010-008/008
VI.  GEOMAGNETIC ACTIVITY PROBABILITIES 27 FEB-01 MAR
A.  MIDDLE LATITUDES
ACTIVE                15/15/15
MINOR STORM           01/01/01
MAJOR-SEVERE STORM    01/01/01
B.  HIGH LATITUDES
ACTIVE                15/20/20
MINOR STORM           01/05/05
MAJOR-SEVERE STORM    01/01/01