:Product: 20000401SGAS.txt
:Issued: 2000 Apr 01 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 092 ISSUED AT 0245Z ON 01 APR 2000
THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 31 MAR
A.  ENERGETIC EVENTS
BEGIN  MAX  END  RGN   LOC   XRAY  OP 245MHZ 10CM   SWEEP
0622 0652 0723  8936 S15E55 M1.2  SN        46
0750 0755 0758  8939 N22E64 M1.0  SF
1013 1019 1024  8939 N23E65 M4.1  SF 99     120       IV
1312 1318 1323  8939 N24E60 M1.8  SF        110
1650 1655 1701  8939 N23E58 M1.2  SF
1842 1901 1905  8925 S20W26 M2.0  1N
B.  PROTON EVENTS:  NONE
C.  GEOMAGNETIC ACTIVITY SUMMARY:  HE GEOMAGNETIC FIELD WAS
PREDOMINANTLY UNSETTLED TO ACTIVE. ISOLATED MINOR STORMING WAS ALSO
OBSERVED. THE SOURCE OF THIS DISTURBANCE IS UNKNOWN. SOLAR WIND
PARAMETERS WERE REASONABLY BENIGN EXCEPT FOR SOME PERIODS OF
NEGATIVE BZ AND THE PASSAGE OF A SECTOR BOUNDARY DURING THE PERIOD.
D.  STRATWARM:  STRATWARM ALERT EXISTS STRATWARM FRIDAY
FINAL WARMING SLOWLY PROGRESSES. THE WARM CENTER
OVER NORTHERN SIBERIA/NORTHEASTERN EUROPE EXTENDS
FURTHER POLEWARDS WHILE THE RESTS OF THE COLD AIR
WILL BE SHIFTED TO MIDDLE LATITUDES. THE WEAKENING
VORTEX MOVES FROM THE CANADIAN TO THE EUROPEAN
ARCTIC AND AN ANTICYCLONE DEVELOPS OVER ALASKA AND
THE ADJACENT ARCTIC. TEMPERATURE GRADIENT REVERSED
BETWEEN 60N AND THE POLE IN THE MIDDLE AND
UPPER STRATOSPHERE AND CIRCULATION REVERSAL
EXPECTED AROUND MID-APRIL.
LAST MESSAGE OF THIS WINTER SEASON.
E.  DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES)
10 CM 225  SSN 248  AFR/AP 020/019   X-RAY BACKGROUND C1.2
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 1.6E+05   GT 10 MEV 1.2E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.80E+05 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 5 4 4 4 2 2 3 PLANETARY 3 4 4 4 4 3 3 3
F.  COMMENTS:  NONE