:Product: 0608RSGA.txt
:Issued: 2025 Jun 08 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 159 Issued at 2200Z on 08 Jun 2025

IA.  Analysis of Solar Active Regions and Activity from 07/2100Z to
08/2100Z: 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 (09 Jun, 10 Jun,
11 Jun).

IIA.  Geophysical Activity Summary 07/2100Z to 08/2100Z: The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 462 km/s at 08/0157Z. Total IMF reached 16
nT at 07/2258Z. The maximum southward component of Bz reached -8 nT at
08/1910Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 780 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to minor storm levels on day one (09 Jun) and quiet to
active levels on days two and three (10 Jun, 11 Jun).

III.  Event probabilities 09 Jun-11 Jun
Class M    25/25/25
Class X    05/05/05
Proton     05/05/05
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           08 Jun 115
Predicted   09 Jun-11 Jun 115/115/115
90 Day Mean        08 Jun 152

V.  Geomagnetic A Indices
Observed Afr/Ap 07 Jun  015/ 020
Estimated Afr/Ap 08 Jun  013/016
Predicted Afr/Ap 09 Jun-11 Jun  018/022-010/012-011/012

VI.  Geomagnetic Activity Probabilities 09 Jun-11 Jun
A.  Middle Latitudes
Active                40/30/30
Minor Storm           25/10/10
Major-severe storm    05/01/01
B.  High Latitudes
Active                10/15/15
Minor Storm           25/30/30
Major-severe storm    65/40/40