Viewing archive of Friday, 12 September 2025

Geophysical report

Solar and Geophysical Activity Summary 2025 Sep 12 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 255 Issued at 0245Z on 12 Sep 2025 This report is compiled from data received at SWO on 11 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to unsettled levels with an early, isolated active period.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 115  SSN 092  Afr/Ap 010/010   X-ray Background B6.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.9e+04   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 1.60e+07 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 3 3 2 2 2 1 2 Planetary 4 3 3 2 2 2 1 2 
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-flare2026/04/24X2.5
Last M-flare2026/05/29M1.1
Last geomagnetic storm2026/05/16Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (2%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
April 202679.3 -6.6
Last 30 days97.5 +5

This day in history*

Solar flares
12024X1.43
22024X1.03
32024M7.3
42007M4.04
52000M3.64
DstG
11958-166G4
22013-124G3
32025-120G4
41991-75G3
51967-63
*since 1994

Social networks