:Product: 19980827SGAS.txt
:Issued: 1998 Aug 27 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 239 ISSUED AT 0245Z ON 27 AUG 1998
THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 26 AUG
A.  ENERGETIC EVENTS
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP
0557 0557 0558                       490
1116 1116 1117                       510
B.  PROTON EVENTS:  THE GREATER THAN 100 MEV ALERT WAS CANCELLED AT
26/2045UT.  THE PEAK FLUX FOR 100 MEV PARTICLES WAS 3.7 PFU ON
25/0055UT.  THE GREATER THAN 10 MEV ALERT CONTINUES WITH FLUXES AT
THE END OF THE UT DAY NEAR 70 PFU.  THE RUNNING PEAK FOR GT 10 MEV
FLUX WAS 665 PFU AT 26/1055UT.
C.  GEOMAGNETIC ACTIVITY SUMMARY:  THE GEOMAGNETIC FIELD HAS BEEN AT
ACTIVE TO MINOR STORM CONDITIONS.  A SUDDEN IMPULSE WAS OBSERVED AT
26/0651 UT.  AFTER THE IMPULSE, MID-LATITUDE K-INDICES UP TO 5 WERE
OBSERVED.  A SECONDARY SURGE IN THE SOLAR WIND WAS OBSERVED AT
APPROXIMATELY 1700 UT.  THE SPEED ROSE AND LEVELED OUT OVER 800
KM/S, THE DENSITY INCREASED FROM 2 TO 10 P/CC, AND THE BZ WENT FROM
-2 NT TO -12 NT.  THE FINAL K VALUE FOR 26 AUG WAS A 5.
D.  STRATWARM:  NONE.
E.  DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES)
10 CM 127  SSN 146  AFR/AP 031/039   X-RAY BACKGROUND B2.4
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 4.8E+08   GT 10 MEV 2.9E+07 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 3.00E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 3 3 5 5 4 4 4 5 PLANETARY 2 3 5 6 5 5 5 5
F.  COMMENTS:  NONE.