:Product: 19980926SGAS.txt
:Issued: 1998 Sep 26 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
JOINT USAF/NOAA SOLAR AND GEOPHYSICAL ACTIVITY SUMMARY
SGAS NUMBER 269 ISSUED AT 0245Z ON 26 SEP 1998
THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 25 SEP
A.  ENERGETIC EVENTS
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP
0006 0009 0009                       500
0108 0109 0111                       720
0238 0243 0245                       640
0556 0557 0558                       610
0612 0612 0612                       260
0616 0617 0617                       850
0641 0643 0646                       580
0715 0717 0718                       830
0742 0742 0743                       560
0804 0804 0805                       580
1009 1011 1012                       960
B.  PROTON EVENTS:  A GREATER THAN 10 MEV PROTON EVENT BEGAN AT
25/0010Z, REACHED A MAXIMUM OF 44 PFU AT 25/0130Z, AND ENDED AT
25/0230Z. THE EVENT WAS LIKELY ASSOCIATED WITH THE M7/3B ON
23/0713Z.
C.  GEOMAGNETIC ACTIVITY SUMMARY:  THE GEOMAGNETIC FIELD REACHED
ACTIVE TO SEVERE STORM LEVELS SOON AFTER THE SHOCK AT
GEOSYNCHRONOUS ORBIT AT 24/2315Z. K-INDICES REACHED 9 AT BOTH MID
AND HIGH LATITUDES DURING THE 06-09Z INTERVAL. THE FIELD RETURNED TO
QUIET TO UNSETTLED LEVELS BY THE END OF THE PERIOD. THE GREATER THAN
2 MEV ENERGETIC ELECTRON FLUX REACHED HIGH LEVELS BETWEEN 25/1830 -
2115Z.
D.  STRATWARM:  NONE
E.  DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES)
10 CM 139  SSN 118  AFR/AP 097/121   X-RAY BACKGROUND B3.7
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 1.1E+08   GT 10 MEV 3.4E+05 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 5.20E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 6 6 9 7 5 3 2 2 PLANETARY 7 8 9 7 7 5 3 3
F.  COMMENTS:  NONE