:Product: 0606RSGA.txt
:Issued: 2025 Jun 06 2200 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 157 Issued at 2200Z on 06 Jun 2025

IA.  Analysis of Solar Active Regions and Activity from 05/2100Z to
06/2100Z: Solar activity has been at low levels for the past 24 hours.
There are currently 5 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (07 Jun, 08 Jun,
09 Jun).

IIA.  Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 587 km/s at 05/2158Z. Total IMF reached 5 nT at
06/1759Z. The maximum southward component of Bz reached -3 nT at
06/1721Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 5178 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to minor storm levels on day one (07 Jun) and quiet to
active levels on days two and three (08 Jun, 09 Jun).

III.  Event probabilities 07 Jun-09 Jun
Class M    35/35/35
Class X    05/05/05
Proton     05/05/05
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           06 Jun 128
Predicted   07 Jun-09 Jun 128/125/125
90 Day Mean        06 Jun 153

V.  Geomagnetic A Indices
Observed Afr/Ap 05 Jun  015/ 015
Estimated Afr/Ap 06 Jun  007/009
Predicted Afr/Ap 07 Jun-09 Jun  014/018-014/015-009/012

VI.  Geomagnetic Activity Probabilities 07 Jun-09 Jun
A.  Middle Latitudes
Active                35/35/30
Minor Storm           25/15/10
Major-severe storm    05/01/01
B.  High Latitudes
Active                10/15/15
Minor Storm           25/30/30
Major-severe storm    60/50/40