2026 Oct 29 2200 UTC
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 302 Issued at 2200Z on 29 Oct 2026

IA. Analysis of Solar Active Regions and Activity from 28/2100Z to
29/2100Z: Solar activity has been at very low levels for the past 24
hours. 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 (30
Oct, 31 Oct, 01 Nov).

IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 420 km/s at 28/2147Z. Total IMF reached 6 nT at
29/0011Z. The maximum southward component of Bz reached -4 nT at
29/0158Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1228 pfu at 29/1630Z.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (30 Oct), unsettled to minor
storm levels on day two (31 Oct) and quiet to minor storm levels on day
three (01 Nov).

III. Event probabilities 30 Oct-01 Nov
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green

IV. Penticton 10.7 cm Flux
Observed 29 Oct 089
Predicted 30 Oct-01 Nov 95/95/95
90 Day Mean 29 Oct 111

V. Geomagnetic A Indices
Observed Afr/Ap 28 Oct 007/007
Estimated Afr/Ap 29 Oct 005/006
Predicted Afr/Ap 30 Oct-01 Nov 010/012-021/028-016/020

VI. Geomagnetic Activity Probabilities 30 Oct-01 Nov
A. Middle Latitudes
Active 30/40/40
Minor Storm 15/35/25
Major-severe storm 01/10/05
B. High Latitudes
Active 15/05/10
Minor Storm 30/25/30
Major-severe storm 40/70/55