Viewing archive of Wednesday, 23 April 2003

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 2003 Apr 23 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 113 Issued at 0245Z on 23 Apr 2003 This report is compiled from data received at SWO on 22 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0719 0719 0719                       76            II
1613 1617 1622  0338 N20W17 C2.2  Sf 140    50
1941 2011 2037  0338 N20W14 C4.0  Sf 7500             IV
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was unsettled to active. A high speed solar wind stream that began early on 21 April continues. Solar wind speeds exceeded 600 km/s early in the period, but gradually declined to below 550 km/s by the end of the period.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 132  SSN 147  Afr/Ap 019/022   X-ray Background B4.7
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.1e+06   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
Daily Electron Fluence
GT 2 MeV 3.30e+08 e/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
3 Hour K-indices
Boulder 4 4 4 3 3 3 3 3 Planetary 4 4 4 4 3 3 3 4
F. Comments
  The greater than 2 MeV electrons at geosynchronous
orbit reached high levels again today.

All times in UTC

<< Go to daily overview page

Latest news

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!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/10/31X2.0
Last M-flare2024/11/05M2.6
Last geomagnetic storm2024/10/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2024141.4 -74.1
November 2024215.8 +74.4
Last 30 days161.1 +7.2

This day in history*

Solar flares
12013X4.93
21998X1.21
32014X1.14
42003M7.6
52004M5.72
DstG
12023-172G3
21991-92G2
31986-74G1
41959-73G1
51993-71G1
*since 1994

Social networks