Viewing archive of Tuesday, 21 April 1998

Geophysical report

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

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 111 Issued at 0245Z on 21 APR 1998 This report is compiled from data received at SWO on 20 APR
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0938 1021 1118              M1.4                   II
B. Proton Events
GREATER THAN 10 AND 100 MEV EVENTS IN PROGRESS. GREATER THAN 10 MEV EVENT STARTED AT 20/1400Z, WITH 450 PFU PEAK FLUX SO FAR. GREATER THAN 100 MEV EVENT STARTED AT 20/1710Z, WITH 2.3 PFU PEAK FLUX SO FAR.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO ACTIVE FOR THE PAST 24 HOURS.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 098  SSN 035  AFR/AP 010/010   X-RAY BACKGROUND B2.0
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 1.2E+07   GT 10 MEV 6.8E+06 P/(CM2-STER-DAY)
GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.00E+06 E/(CM2-STER-DAY)
GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES)
3 HOUR K-INDICES:
BOULDER 0 2 4 2 3 2 1 2 PLANETARY 0 2 3 3 4 2 2 2
F. Comments
  None


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