:Product: 20000306RSGA.txt
:Issued: 2000 Mar 06 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 066 ISSUED AT 2200Z ON 06 MAR 2000
IA.  ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM  05/2100Z
TO 06/2100Z:  SOLAR ACTIVITY HAS BEEN LOW FOR THE PAST 24 HOURS.
TODAY'S LARGEST EVENT WAS AN OPTICALLY UNCORRELATED C4 FLARE AT
1049Z. REGION 8891 (S16W58) IS DECLINING SLOWLY BUT CONTINUES TO BE
THE LARGEST GROUP ON THE DISK. REGION 8898 (S13E20) CONTINUED TO
GROW AND SHOWED OCCASIONAL BRIGHTENINGS AND SUBFLARE ACTIVITY.
REGION 8900 (S15W12) IS ALSO GROWING, BUT WAS QUIETER THAN 8898.
REGION 8889 (N19W74), WHICH HAS BEEN VERY STABLE OVER THE LAST FEW
DAYS,  PRODUCED A C3/SF AT 1619Z WHICH WAS ACCOMPANIED BY A BRIGHT
SURGE ON THE LIMB. SOHO/EIT IMAGES SHOWED THE ERUPTION OF A FILAMENT
IN THE NORTHWEST PART OF THE DISK ON THE 5TH AROUND 1700Z.
CORONAGRAPH DATA SHOW THAT THE CME MATERIAL IS NOT DIRECTED TOWARDS
THE EARTH.
IB.  SOLAR ACTIVITY FORECAST:  SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. THERE IS A FAIR CHANCE FOR AN ISOLATED M-CLASS EVENT
OVER THE NEXT THREE DAYS FROM REGION 8891, 8898, OR 8900.
IIA.  GEOPHYSICAL ACTIVITY SUMMARY FROM 05/2100Z TO 06/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. A SOLAR SECTOR BOUNDARY
CROSSING WAS OBSERVED AT THE ACE SPACECRAFT AT 06/0200Z. SINCE THAT
TIME, SPEEDS HAVE BEEN SLIGHTLY ELEVATED AND THE GEOMAGNETIC FIELD
HAS BEEN MOSTLY UNSETTLED.
IIB.  GEOPHYSICAL ACTIVITY FORECAST:  THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III.  EVENT PROBABILITIES 07 MAR-09 MAR
CLASS M    50/50/50
CLASS X    10/10/10
PROTON     10/10/10
PCAF       GREEN
IV.  PENTICTON 10.7 CM FLUX
OBSERVED           06 MAR 222
PREDICTED   07 MAR-09 MAR  225/220/215
90 DAY MEAN        06 MAR 171
V.  GEOMAGNETIC A INDICES
OBSERVED AFR/AP 05 MAR  004/007
ESTIMATED AFR/AP 06 MAR  012/012
PREDICTED AFR/AP 07 MAR-09 MAR  007/010-007/010-007/008
VI.  GEOMAGNETIC ACTIVITY PROBABILITIES 07 MAR-09 MAR
A.  MIDDLE LATITUDES
ACTIVE                20/20/20
MINOR STORM           10/10/10
MAJOR-SEVERE STORM    05/05/05
B.  HIGH LATITUDES
ACTIVE                25/25/25
MINOR STORM           15/15/15
MAJOR-SEVERE STORM    05/05/05