Report of Solar Geophysical Activity

Report of Solar Geophysical Activity (RSGA)

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 318 Issued at 2200Z on 14 Nov 2013

IA.  Analysis of Solar Active Regions and Activity from 13/2100Z to
14/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C4 event observed at
14/0800Z from Region 1897 (S21E26). 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 and a slight chance for an X-class flare on
day one (15 Nov) and expected to be low with a chance for M-class flares
on days two and three (16 Nov, 17 Nov).

IIA.  Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 405 km/s at
14/1512Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 475 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on day one (15 Nov), quiet to unsettled levels on
day two (16 Nov) and quiet to active levels on day three (17 Nov).
Protons greater than 10 Mev have a slight chance of crossing threshold
on day one (15 Nov).

III.  Event probabilities 15 Nov-17 Nov
Class M    50/40/40
Class X    15/05/05
Proton     20/05/05
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           14 Nov 176
Predicted   15 Nov-17 Nov 175/175/175
90 Day Mean        14 Nov 124

V.  Geomagnetic A Indices
Observed Afr/Ap 13 Nov  002/004
Estimated Afr/Ap 14 Nov  003/003
Predicted Afr/Ap 15 Nov-17 Nov  005/005-007/008-011/012

VI.  Geomagnetic Activity Probabilities 15 Nov-17 Nov
A.  Middle Latitudes
Active                10/20/35
Minor Storm           01/05/10
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           20/25/30
Major-severe storm    10/25/45

Radio Events Observed 14 Nov 2013
A.  245 MHz Bursts
Start  End   Peak Flux  Time of Peak  Duration
0219   0219    290          0219        0000  
0534   0534    190          0534        0000  
B.  245 MHz Noise Storms
No 245 MHz Noise Storms Observed.