Viewing archive of Sunday, 31 October 2021

Geophysical report

Solar and Geophysical Activity Summary 2021 Oct 31 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 304 Issued at 0245Z on 31 Oct 2021 This report is compiled from data received at SWO on 30 Oct
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
The greater than 10 MeV proton event that begain at 28/1740z, reached a peak flux of 29 pfu at 29/0250z and ended at 30/1610z. There was a brief enhancement above the 10 pfu threshold beginning at 30/2100-2130z. The greater than 100 MeV proton event that began at 28/1635z, reached a peak of 7.3 pfu at 28/1815z and ended at 30/0440z.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to active.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 107  SSN 076  Afr/Ap 008/009   X-ray Background B3.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.5e+07   GT 10 MeV 1.1e+06 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 3 1 1 2 2 3 Planetary 2 2 2 1 0 2 3 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-flare2025/12/08X1.1
Last M-flare2025/12/09M1.5
Last geomagnetic storm2025/12/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025160.6 +68.8
Last 30 days108 +10.6

This day in history*

Solar flares
12024M6.46
22023M2.3
32002M1.63
42024M1.6
52024M1.5
DstG
11983-61G1
21982-60G2
31997-56
41985-54
52003-51G1
*since 1994

Social networks