Solar activity report

Viewing archive of Wednesday, 9 June 2021

Report of Solar-Geophysical Activity 2021 Jun 10 0015 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 160 Issued at 2200Z on 09 Jun 2021

IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 09/1159Z. 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 (10 Jun, 11 Jun, 12 Jun).

IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z

The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 433 km/s at 08/2215Z. Total IMF reached 3 nT at 08/2227Z. The maximum southward component of Bz reached -2 nT. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 149 pfu.

IIB. Geophysical Activity Forecast

The geomagnetic field is expected to be at quiet levels on days one, two, and three (10 Jun, 11 Jun, 12 Jun).

III. Event Probabilities 10 Jun to 12 Jun

Class M	01%	01%	01%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	green

IV. Penticton 10.7 cm Flux

  Observed       09 Jun 079
  Predicted   10 Jun-12 Jun 078/075/075
  90 Day Mean        09 Jun 076

V. Geomagnetic A Indices

  Observed Afr/Ap 08 Jun  005/005
  Estimated     Afr/Ap 09 Jun 004/004
  Predicted    Afr/Ap 10 Jun-12 Jun 007/005-007/005-006/005

VI. Geomagnetic Activity Probabilities 10 Jun to 12 Jun

A. Middle Latitudes
Active	10%	10%	10%
Minor storm	01%	01%	01%
Major-severe storm	01%	01%	01%

B. High Latitudes
Active	15%	15%	15%
Minor storm	20%	20%	20%
Major-severe storm	10%	10%	10%

All times in UTC

Previous rotation Previous day Calendar

Next day Next rotation

<< Go to daily overview page

G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 21:40 UTC

The strength of the interplanetary magnetic field is moderate (14.53nT), the direction is North (6.93nT).

The Disturbance Storm Time index predicts strong storm conditions right now (-107nT)

Latest news

Tuesday, 15 April 2025

CME arrival, G3 storm watch

Friday, 28 March 2025

X1.1 solar flare

Monday, 24 March 2025

Coronal hole faces Earth

More news

Latest forum messages

2025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 453 Incoming & Unnumbered Active Regions 1741 AR4062 33 AR4064 8 AR 4060 31

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!

Donate SpaceWeatherLive Pro