Viewing archive of Tuesday, 19 September 2023

Geophysical report

Solar and Geophysical Activity Summary 2023 Sep 19 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 262 Issued at 0245Z on 19 Sep 2023 This report is compiled from data received at SWO on 18 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 2028 2028 2028                       200                           
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field reached severe storm levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 155  SSN 139  Afr/Ap 021/041   X-ray Background C1.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.2e+07   GT 10 MeV 3.9e+04 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 7.80e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 4 3 2 1 4 5 4 4 Planetary 4 3 2 2 5 7 6 4 
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 Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!

No Ads on SWL Pro!
No Ads on SWL Pro! Subscriptions
Donations
Support SpaceWeatherLive.com! Donate
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2026/01/18X1.9
Last M-flare2026/01/21M3.4
Last geomagnetic storm2026/01/22Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2025124 +32.2
January 2026114.4 -9.6
Last 30 days118.1 +9.1

This day in history*

Solar flares
12012X1.26
22024M5.12
32024M4.3
42003M3.59
52024M2.44
DstG
11957-114G1
22000-96G2
31979-84G1
42004-78G2
52012-71G1
*since 1994

Social networks