Geophysical report

Viewing archive of Sunday, 25 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 25 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 206 Issued at 0245Z on 25 JUL 1999 This report is compiled from data received at SWO on 24 JUL

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0028 0028 0028                       160
0356 0404 0408  8645 S29E87 M1.7  1N
0749 0802 0825  8645 S28E78 M3.3  SF
1119 1122 1128              M2.1            15
1129 1133 1139              M2.0

B. Proton Events

None

C. Geomagnetic Activity Summary

THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. SOLAR WIND VELOCITY REMAINED ELEVATED ABOVE NORMAL AND OCCASIONALLY EXCEEDED 500 KM/S.

D. Stratwarm

None

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

10 CM 184  SSN 173  AFR/AP 010/011   X-RAY BACKGROUND C1.9
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 9.7E+04   GT 10 MEV 1.4E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 7.50E+06 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 3 2 2 3 2 2 3 PLANETARY 3 3 2 3 3 2 3 3

F. Comments

  None

All times in UTC

Previous rotation Previous day Calendar

Next day Next rotation

<< Go to daily overview page

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

Reykjavik

The solar wind speed is currently moderately high (604.8 km/sec.)

The strength of the interplanetary magnetic field is high (22.51nT), the direction is North (12.23nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-60nT)

Latest news

Tuesday, 15 April 2025

CME arrival, G3 storm watch

Friday, 28 March 2025

X1.1 solar flare

Monday, 24 March 2025

Coronal hole faces Earth

More news

Latest forum messages

2025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 191 SEEDS is down? 23 Incoming & Unnumbered Active Regions 1722 AR4062 27 AR 4060 26

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Donate SpaceWeatherLive Pro