Geophysical report

Viewing archive of Tuesday, 13 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 13 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 194 Issued at 0245Z on 13 JUL 1999 This report is compiled from data received at SWO on 12 JUL

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1531 1531 1531                       580
1643 1648 1653  8634 S20E79 C1.2  SF 150
1840 0000 1851                                     II
1859 1902 1902                       200
1942 1947 1956  8628 N19E12 C1.5  SF 280    13     II
2251 2252 2253                       150
2324 2324 2324                       130

B. Proton Events

None

C. Geomagnetic Activity Summary

THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE.

D. Stratwarm

None

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

10 CM 154  SSN 199  AFR/AP 013/014   X-RAY BACKGROUND B6.8
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 4.9E+04   GT 10 MEV 1.6E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.90E+05 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 3 4 3 4 2 1 1 2 PLANETARY 3 4 4 3 3 2 3 2

F. Comments

  None

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G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 22:29 UTC

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Tórshavn
Reykjavik
Trondheim

The solar wind speed is currently moderately high (603 km/sec.)

The strength of the interplanetary magnetic field is high (22.65nT), the direction is North (13.39nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-63nT)

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