Viewing archive of Tuesday, 30 May 2023

Solar activity report

Report of Solar-Geophysical Activity 2023 May 30 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 150 Issued at 2200Z on 30 May 2023

IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z

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 30/1338Z from Region 3315 (S17W48). There are currently 10 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (31 May, 01 Jun, 02 Jun).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 414 km/s at 30/1839Z. Total IMF reached 7 nT at 30/1258Z. The maximum southward component of Bz reached -5 nT at 30/1838Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 521 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on days one and two (31 May, 01 Jun) and quiet to minor storm levels on day three (02 Jun). Protons have a slight chance of crossing threshold on days one, two, and three (31 May, 01 Jun, 02 Jun).
III. Event Probabilities 31 May to 02 Jun
Class M40%40%40%
Class X10%10%10%
Proton10%10%10%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       30 May 162
  Predicted   31 May-02 Jun 160/160/150
  90 Day Mean        30 May 153

V. Geomagnetic A Indices
  Observed Afr/Ap 29 May  005/005
  Estimated     Afr/Ap 30 May  004/005
  Predicted    Afr/Ap 31 May-02 Jun  006/005-006/005-010/015

VI. Geomagnetic Activity Probabilities 31 May to 02 Jun
A. Middle Latitudes
Active10%10%40%
Minor storm01%05%25%
Major-severe storm01%01%05%
B. High Latitudes
Active15%15%10%
Minor storm20%20%25%
Major-severe storm20%15%65%

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-flare2024/12/23M1.0
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
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