Geophysical report

Viewing archive of Wednesday, 28 July 1999

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 1999 Jul 28 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 209 Issued at 0245Z on 28 JUL 1999 This report is compiled from data received at SWO on 27 JUL

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0738 0747 0750  8646 N13W50       SF 680
0745 0745 0746                       100
1258 1405 1420  8636 N24W45 M3.0  1B
1500 1501 1504  8646 N12W54       SF 300

B. Proton Events

None

C. Geomagnetic Activity Summary

THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.

D. Stratwarm

None

E. Daily Indices: (real-time preliminary/estimated values)

10 CM 175  SSN 161  AFR/AP 008/006   X-RAY BACKGROUND B7.0
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 5.4E+04   GT 10 MEV 1.4E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 3.90E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 3 3 2 2 2 2 1 PLANETARY 2 2 2 1 2 2 2 1

F. Comments

  None

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 01:34 UTC

The solar wind speed is currently moderately high (598 km/sec.)

The strength of the interplanetary magnetic field is moderate (18.15nT), the direction is North (6.27nT).

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