Viewing archive of Thursday, 19 August 1999

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 1999 Aug 19 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 231 Issued at 0245Z on 19 AUG 1999 This report is compiled from data received at SWO on 18 AUG
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0206 0206 0206                       140
2001 2001 2001                       170
B. Proton Events
None
C. Geomagnetic Activity Summary
HE GEOMAGNETIC FIELD REMAINED AT ACTIVE TO MINOR STORM LEVELS. THIS DISTURBANCE, RELATED TO A HIGH SPEED SOLAR WIND STREAM, BEGAN IN THE EARLY PART OF 16 AUGUST. SPEEDS CONTINUED IN THE 600-700 KM/S RANGE MOST OF TODAY. THE GREATER THAN 2 MEV GEOSYNCHRONOUS ELECTRON FLUX ATTAINED HIGH LEVELS AROUND 1200Z.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 131  SSN 047  AFR/AP 025/026   X-RAY BACKGROUND B9.1
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 6.6E+05   GT 10 MEV 1.3E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.30E+08 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 4 5 4 3 4 4 3 3 PLANETARY 4 5 5 4 4 4 3 3
F. Comments
  None


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!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/22M1.0
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024103.3 -49.2
Last 30 days115.4 -40.8

This day in history*

Solar flares
11999M7.71
22013M4.82
32023M3.33
42013M2.8
51999M2.61
DstG
11982-101G3
22014-71G1
32001-59
41987-59
51989-58G1
*since 1994

Social networks