:Product: 0624RSGA.txt
:Issued: 2025 Jun 24 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 175 Issued at 2200Z on 24 Jun 2025

IA.  Analysis of Solar Active Regions and Activity from 23/2100Z to
24/2100Z: Solar activity has been at low levels for the past 24 hours.
There are currently 6 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 (25 Jun, 26 Jun,
27 Jun).

IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 480 km/s at 24/1922Z. Total IMF reached 7
nT at 24/1600Z. The maximum southward component of Bz reached -6 nT at
24/1706Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1366 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at unsettled to major storm levels on day one (25 Jun), unsettled
to minor storm levels on day two (26 Jun) and quiet to active levels on
day three (27 Jun).

III.  Event probabilities 25 Jun-27 Jun
Class M    30/30/35
Class X    05/05/05
Proton     05/05/05
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           24 Jun 120
Predicted   25 Jun-27 Jun 120/125/130
90 Day Mean        24 Jun 146

V.  Geomagnetic A Indices
Observed Afr/Ap 23 Jun  009/ 008
Estimated Afr/Ap 24 Jun  008/011
Predicted Afr/Ap 25 Jun-27 Jun  028/040-021/026-013/015

VI.  Geomagnetic Activity Probabilities 25 Jun-27 Jun
A.  Middle Latitudes
Active                30/35/30
Minor Storm           35/25/15
Major-severe storm    25/05/01
B.  High Latitudes
Active                05/10/10
Minor Storm           20/25/25
Major-severe storm    80/55/45
