Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 2 January 2018

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 2 Issued at 2200Z on 02 Jan 2018

IA.  Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.

IB.  Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (03 Jan, 04 Jan, 05 Jan).

IIA.  Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 468 km/s at 01/2100Z. Total IMF reached 6 nT at 02/1116Z. The maximum southward component of Bz reached -4 nT at 02/1505Z.

IIB.  Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (03 Jan, 04 Jan, 05 Jan).

III.  Event probabilities 03 Jan-05 Jan
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           02 Jan 070
Predicted   03 Jan-05 Jan 071/071/070
90 Day Mean        02 Jan 073

V.  Geomagnetic A Indices
Observed Afr/Ap 01 Jan  008/008
Estimated Afr/Ap 02 Jan  005/005
Predicted Afr/Ap 03 Jan-05 Jan  006/005-006/005-006/005

VI.  Geomagnetic Activity Probabilities 03 Jan-05 Jan
A.  Middle Latitudes
Active                10/10/10
Minor Storm           05/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           20/15/15
Major-severe storm    20/15/10