Viewing archive of Sunday, 5 December 2021

Solar activity report

Report of Solar-Geophysical Activity 2021 Dec 05 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 339 Issued at 2200Z on 05 Dec 2021

IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z

Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 05/0719Z from Region 2898 (S24, L=236). There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low with a chance for a C-class flares and a slight chance for an M-class flare on day one (06 Dec) and expected to be very low with a slight chance for a C-class flare on days two and three (07 Dec, 08 Dec).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 489 km/s at 05/1718Z. Total IMF reached 7 nT at 05/0031Z. The maximum southward component of Bz reached -5 nT at 05/1450Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1288 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (06 Dec, 07 Dec) and quiet levels on day three (08 Dec).
III. Event Probabilities 06 Dec to 08 Dec
Class M10%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       05 Dec 083
  Predicted   06 Dec-08 Dec 082/080/080
  90 Day Mean        05 Dec 087

V. Geomagnetic A Indices
  Observed Afr/Ap 04 Dec  007/006
  Estimated     Afr/Ap 05 Dec  006/008
  Predicted    Afr/Ap 06 Dec-08 Dec  008/008-008/008-006/005

VI. Geomagnetic Activity Probabilities 06 Dec to 08 Dec
A. Middle Latitudes
Active20%15%10%
Minor storm05%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%25%20%
Major-severe storm30%20%20%

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-flare2024/12/22M1.1
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024103.3 -49.2
Last 30 days114 -43.9

This day in history*

Solar flares
12015M6.75
21998M3.34
32013M2.36
42013M1.97
52001M1.69
DstG
12002-67
22000-62G2
31989-60
42014-57
51982-53G1
*since 1994

Social networks