Viewing archive of Wednesday, 21 October 1998

Geophysical report

Solar and Geophysical Activity Summary 1998 Oct 21 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 294 Issued at 0245Z on 21 OCT 1998 This report is compiled from data received at SWO on 20 OCT
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
2322 0000 2323                                     II
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. ACTIVE CONDITIONS OCCURRED AT ALL LATITUDES AFTER 20/1800Z WITH BRIEF MINOR TO MAJOR STORM PERIODS DETECTED AT HIGH LATITUDES. IT APPEARED THE FIELD WAS AFFECTED BY A HIGH-SPEED CORONAL HOLE WIND STREAM.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 121  SSN 104  AFR/AP 013/017   X-RAY BACKGROUND B6.7
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 9.2E+05   GT 10 MEV 3.9E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.50E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 3 2 3 2 2 4 3 PLANETARY 3 3 3 3 2 3 4 4
F. Comments
  THE TYPE II SWEEP WAS OF WEAK INTENSITY WITH AN IPS
ESTIMATED SHOCK VELOCITY OF 1100 KM/SEC.


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