Viewing archive of Saturday, 16 September 2017

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 2017 Sep 16 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 259 Issued at 0245Z on 16 Sep 2017 This report is compiled from data received at SWO on 15 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0453 0453 0454                       120                           
 0728 0728 0729                       130                           
B. Proton Events
None
C. Geomagnetic Activity Summary
Field activity was at unsettled to major storm levels due to positive polarity coronal hole high speed stream influence.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 073  SSN 013  Afr/Ap 030/041   X-ray Background A1.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.2e+07   GT 10 MeV 2.3e+05 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 5.40e+08 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 5 5 5 4 4 3 4 4 Planetary 6 4 4 3 4 4 6 4 
F. Comments
  The GOES-13 electron fluence at greater than 2 MeV
exceeded high levels.

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!

76%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/06/10X1.55
Last M-flare2024/06/19M1.1
Last geomagnetic storm2024/06/15Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
May 2024171.7 +35.2
June 2024157.2 -14.5
Last 30 days146.4 -20.8

This day in history*

Solar flares
12023X1.11
21999M4.19
32023M1.83
42015M1.45
52023M1.1
DstG
11972-67.00
21970-63.00
31984-43.00G1
41989-38.00G1
51988-37.00
*since 1994

Social networks