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 UTCPrepared 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 MARA. 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
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