Viewing archive of Friday, 22 October 2021

Solar activity report

Report of Solar-Geophysical Activity 2021 Oct 22 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 295 Issued at 2200Z on 22 Oct 2021

IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low with a slight chance for a C-class flare on days one, two, and three (23 Oct, 24 Oct, 25 Oct).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 528 km/s at 21/2233Z. Total IMF reached 6 nT at 22/1136Z. The maximum southward component of Bz reached -3 nT at 22/1156Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 154 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on days one, two, and three (23 Oct, 24 Oct, 25 Oct).
III. Event Probabilities 23 Oct to 25 Oct
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       22 Oct 087
  Predicted   23 Oct-25 Oct 088/090/090
  90 Day Mean        22 Oct 082

V. Geomagnetic A Indices
  Observed Afr/Ap 21 Oct  009/006
  Estimated     Afr/Ap 22 Oct  004/005
  Predicted    Afr/Ap 23 Oct-25 Oct  006/005-006/005-006/005

VI. Geomagnetic Activity Probabilities 23 Oct to 25 Oct
A. Middle Latitudes
Active10%10%10%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm20%20%20%
Major-severe storm10%10%10%

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!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/23M8.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024106.6 -45.9
Last 30 days116.1 -41.8

This day in history*

Solar flares
12024M8.9
22015M6.75
31998M3.34
42013M2.36
52013M1.97
DstG
12002-67
22000-62G2
31989-60
42014-57
51982-53G1
*since 1994

Social networks