:Product: 0730RSGA.txt
:Issued: 2026 Jul 30 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 211 Issued at 2200Z on 30 Jul 2026

IA.  Analysis of Solar Active Regions and Activity from 29/2100Z to
30/2100Z: Solar activity has been at low levels for the past 24 hours.
There are currently 8 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 (31 Jul, 01 Aug,
02 Aug).

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 357 km/s at 30/0558Z. Total IMF reached 5 nT at
30/0411Z. The maximum southward component of Bz reached -4 nT at
30/0929Z.  Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 18 pfu at 30/2055Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 825 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on days one and two (31 Jul, 01 Aug) and
quiet levels on day three (02 Aug).

III.  Event probabilities 31 Jul-02 Aug
Class M    25/25/25
Class X    01/01/01
Proton     01/01/01
PCAF       yellow

IV.  Penticton 10.7 cm Flux
Observed           30 Jul 152
Predicted   31 Jul-02 Aug 140/135/125
90 Day Mean        30 Jul 133

V.  Geomagnetic A Indices
Observed Afr/Ap 29 Jul  006/005
Estimated Afr/Ap 30 Jul  007/010
Predicted Afr/Ap 31 Jul-02 Aug  014/014-010/005-006/005

VI.  Geomagnetic Activity Probabilities 31 Jul-02 Aug
A.  Middle Latitudes
Active                35/25/10
Minor Storm           15/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                10/15/15
Minor Storm           25/20/20
Major-severe storm    50/20/20