Report of Solar Geophysical Activity

 

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 317 Issued at 2200Z on 13 Nov 2014

IA.  Analysis of Solar Active Regions and Activity from 12/2100Z to
13/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
13/0607Z from Region 2209 (S15E62). There are currently 6 numbered
sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is likely to be moderate
with a slight chance for an X-class flare on day one (14 Nov) and likely
to be moderate with a chance for X-class flares on days two and three
(15 Nov, 16 Nov).

IIA.  Geophysical Activity Summary 12/2100Z to 13/2100Z: 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 590 km/s at
13/0018Z. Total IMF reached 8 nT at 12/2107Z. The maximum southward
component of Bz reached -5 nT at 13/0814Z.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (14 Nov, 15 Nov)
and quiet to active levels on day three (16 Nov). Protons have a slight
chance of crossing threshold on days one, two, and three (14 Nov, 15
Nov, 16 Nov).

III.  Event probabilities 14 Nov-16 Nov
Class M    60/70/70
Class X    20/30/30
Proton     10/10/10
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           13 Nov 154
Predicted   14 Nov-16 Nov 165/180/180
90 Day Mean        13 Nov 143

V.  Geomagnetic A Indices
Observed Afr/Ap 12 Nov  006/006
Estimated Afr/Ap 13 Nov  007/008
Predicted Afr/Ap 14 Nov-16 Nov  008/008-008/008-010/012

VI.  Geomagnetic Activity Probabilities 14 Nov-16 Nov
A.  Middle Latitudes
Active                15/15/30
Minor Storm           05/05/10
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           25/25/30
Major-severe storm    25/25/40
Radio Events Observed 13 Nov 2014
A.  245 MHz Bursts
Start  End   Peak Flux  Time of Peak  Duration
0455   0455    530          0455        0000  
B.  245 MHz Noise Storms
No 245 MHz Noise Storms Observed.

NOAA Space Weather Scale descriptions can be found at

www.sec.noaa.gov/NOAAscales