Viewing archive of Saturday, 29 May 2021

Solar activity report

Report of Solar-Geophysical Activity 2021 May 29 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 149 Issued at 2200Z on 29 May 2021

IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 28/2313Z from Region 2824 (N19W68). There are currently 2 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 (30 May) and expected to be very low with a slight chance for a C-class flare on day two (31 May) and expected to be very low on day three (01 Jun).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 476 km/s at 29/1904Z. Total IMF reached 8 nT at 29/0409Z. The maximum southward component of Bz reached -6 nT at 29/1001Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 15 pfu at 29/0320Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 134 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on day one (30 May), quiet levels on day two (31 May) and quiet to active levels on day three (01 Jun).
III. Event Probabilities 30 May to 01 Jun
Class M15%01%01%
Class X01%01%01%
Proton05%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       29 May 076
  Predicted   30 May-01 Jun 074/072/072
  90 Day Mean        29 May 076

V. Geomagnetic A Indices
  Observed Afr/Ap 28 May  003/003
  Estimated     Afr/Ap 29 May  004/005
  Predicted    Afr/Ap 30 May-01 Jun  008/008-006/005-015/018

VI. Geomagnetic Activity Probabilities 30 May to 01 Jun
A. Middle Latitudes
Active15%10%30%
Minor storm05%01%10%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%20%35%
Major-severe storm25%10%40%

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-flare2024/12/24M4.1
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024110.7 -41.8
Last 30 days117.3 -41.4

This day in history*

Solar flares
12001M5
22024M4.7
32024M4.1
42023M2.9
52023M2.6
DstG
11995-65G1
22014-57
32001-55G1
42002-49G1
51990-47
*since 1994

Social networks