:Product: 1025RSGA.txt
:Issued: 2015 Oct 25 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 298 Issued at 2200Z on 25 Oct 2015

IA.  Analysis of Solar Active Regions and Activity from 24/2100Z to
25/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
24/2130Z from Region 2434 (S11W89). There are currently 4 numbered
sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (26 Oct,
27 Oct, 28 Oct).

IIA.  Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
537 km/s at 25/0109Z. Total IMF reached 12 nT at 24/2318Z. The maximum
southward component of Bz reached -3 nT at 24/2118Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 111 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (26 Oct), quiet levels on day
two (27 Oct) and quiet to unsettled levels on day three (28 Oct).

III.  Event probabilities 26 Oct-28 Oct
Class M    20/20/20
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           25 Oct 106
Predicted   26 Oct-28 Oct 105/105/105
90 Day Mean        25 Oct 103

V.  Geomagnetic A Indices
Observed Afr/Ap 24 Oct  010/010
Estimated Afr/Ap 25 Oct  009/009
Predicted Afr/Ap 26 Oct-28 Oct  009/010-006/005-007/008

VI.  Geomagnetic Activity Probabilities 26 Oct-28 Oct
A.  Middle Latitudes
Active                20/10/20
Minor Storm           05/01/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/15/20
Minor Storm           25/15/25
Major-severe storm    25/10/25