Viewing archive of Thursday, 1 October 1998

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 1998 Oct 01 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 274 Issued at 0245Z on 01 OCT 1998 This report is compiled from data received at SWO on 30 SEP
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1308 1350 1448  8340 N23W81 M2.8  2N 78     450    II/IV
B. Proton Events
THE GREATER THAN 100 MEV PROTON FLUX CROSSED THE 1 PFU THRESHOLD AT 30/1435Z AND REACHED A MAXIMUM OF 3 PFU DURING THE PERIOD. THE GREATER THAN 10 MEV FLUX REACHED EVENT THRESHOLD OF 10 PFU AT 30/1520Z. A MAXIMUM FLUX OF 1200 PFU WAS OBSERVED AT 01/0025Z. A POLAR CAP ABSORPTION EVENT ACCOMPANIED THE PROTON EVENT WITH A MAXIMUM ABSORPTION OF 4.3 DB.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO SLIGHTLY UNSETTLED. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT WERE AT MODERATE TO HIGH LEVELS.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 122  SSN 059  AFR/AP 006/008   X-RAY BACKGROUND B2.8
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 5.7E+07   GT 10 MEV 1.6E+07 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 3.30E+08 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 2 0 1 2 2 2 3 PLANETARY 1 2 1 1 2 2 3 4
F. Comments
  None


All times in UTC

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