Viewing archive of Saturday, 31 July 1999

Geophysical report

Solar and Geophysical Activity Summary 1999 Jul 31 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 212 Issued at 0245Z on 31 JUL 1999 This report is compiled from data received at SWO on 30 JUL
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0716 0720 0724  8651 N25E46 C3.9  SF 110                           
 1509 1520 1526  8649 S15W28 M1.7  1B 1200   56                     
B. Proton Events
None.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED UNTIL NEAR 30/0900Z. THEREAFTER, THE FIELD WAS AT GENERALLY ACTIVE TO MAJOR STORM LEVELS. SOME SEVERE STORMING WAS OBSERVED AT HIGH LATITUDES. A SUDDEN STORM COMMENCEMENT OF 89 NT WAS OBSERVED AT 30/1948Z.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 206  SSN 218  AFR/AP 036/036   X-RAY BACKGROUND C1.7
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 7.7E+05   GT 10 MEV 1.5E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 7.50E+05 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 2 3 4 5 4 6 6 PLANETARY 3 2 3 4 5 4 6 6 
F. Comments
  None.

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