:Product: 19990604SGAS.txt
:Issued: 1999 Jun 04 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 155 ISSUED AT 0245Z ON 04 JUN 1999
THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 03 JUN
A.  ENERGETIC EVENTS
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP
0601 0601 0601                       160
0629 0631 0637  8557 S28W11       SF 140
0640 0644 0650  8562 S15W08 M1.0  SF
0738 0743 0754  8560 S23W07 C5.6  1N 270
0800 0804 0810  8562 S15W09       SF 120
0943 0949 0953  8562 S15W10 C2.3  SF 170
1044 1048 1054  8562 S15W11 C3.5  1F 110
1100 1100 1109  8554 N26W66       SF 1100
1104 1105 1110  8562 S17W10       SF 120
1221 1222 1222                       100
1500 1501 1502                       190
1651 1651 1654                       110
2029 2029 2029                       240
2058 2101 2106  8552 N19W69 C1.5  SF 1000
2237 2237 2249  8554 N24W73       SF 120
B.  PROTON EVENTS:  THE GREATER THAN 10 MEV PROTON EVENT ENDED: START
02/0245Z, MAXIMUM OF 42 PFU AT 02/1010Z, AND END 03/1410Z. THE FLUX
REMAINED ENHANCED AT THE END OF THE PERIOD AND WAS GRADUALLY
DECLINING TOWARDS BACKGROUND.
C.  GEOMAGNETIC ACTIVITY SUMMARY:  THE GEOMAGNETIC FIELD WAS ACTIVE
DURING THE FIRST THREE HOURS OF THE PERIOD FOLLOWING THE PASSAGE OF
A WEAK INTERPLANETARY SHOCK OBSERVED AT L1 AT 02/2035Z. FIELD
ACTIVITY DECLINED TO MOSTLY QUIET LEVELS AFTER 03/0300Z. ANOTHER
WEAK SHOCK WAS OBSERVED AT L1 AT 03/2145Z FOLLOWED BY A WEAK SUDDEN
IMPULSE (SI) AT EARTH AT 03/2221Z (12 NT, AS MEASURED BY THE BOULDER
USGS MAGNETOMETER). THE FIELD WAS NOT SIGNIFICANTLY DISTURBED
FOLLOWING THE SI.
D.  STRATWARM:  NONE
E.  DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES)
10 CM 174  SSN 176  AFR/AP 008/008   X-RAY BACKGROUND C1.3
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 6.2E+06   GT 10 MEV 9.9E+05 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 7.70E+05 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 4 2 2 2 2 1 1 2 PLANETARY 4 1 1 2 2 2 2 2
F.  COMMENTS:  NONE