Viewing archive of Wednesday, 27 October 2021

Geophysical report

Solar and Geophysical Activity Summary 2021 Oct 27 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 300 Issued at 0245Z on 27 Oct 2021 This report is compiled from data received at SWO on 26 Oct
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0037 0037 0037                       130                           
 0129 0129 0129                       140                           
 0240 0247 0254              M1.3                                   
 0713 0713 0713                       110                           
 0713 0713 0713                       110                           
 1016 1016 1016                       590                           
 1017 1017 1017                       1000                          
 1542 1557 1602  2891        M1.0                                   
 1945 1945 1945                       140                           
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 109  SSN 095  Afr/Ap 003/003   X-ray Background B7.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.2e+04   GT 10 MeV 4.4e+04 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.50e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 1 0 1 2 2 1 2 Planetary 1 1 0 0 1 1 0 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-flare2026/03/30X1.5
Last M-flare2026/04/04M1.7
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026133.3 +47.4
Last 30 days96.1 +32

This day in history*

Solar flares
12002M8.82
22026M7.6
31999M6.76
42001M2.91
52003M2.74
DstG
11979-202G3
21988-133G3
31984-120G4
42004-117G2
51994-111G3
*since 1994

Aurora on this day in history

No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation

Social networks