Viewing archive of Saturday, 1 April 2000

Geophysical report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2000 Apr 01 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

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

All times in UTC

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