Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 16 June 2018
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 168 Issued at 2200Z on 17 Jun 2018
IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (18 Jun, 19 Jun, 20 Jun).
IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 820 km/s at 16/2202Z. Total IMF reached 8 nT at 17/1845Z. The maximum southward component of Bz reached -6 nT at 17/1851Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 816 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (18 Jun, 19 Jun) and quiet levels on day three (20 Jun).
III. Event probabilities 18 Jun-20 Jun
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 17 Jun 071
Predicted 18 Jun-20 Jun 072/074/074
90 Day Mean 17 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 16 Jun 004/003
Estimated Afr/Ap 17 Jun 004/005
Predicted Afr/Ap 18 Jun-20 Jun 008/008-008/005-006/005
VI. Geomagnetic Activity Probabilities 18 Jun-20 Jun
A. Middle Latitudes
Active 20/20/10
Minor Storm 05/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 20/20/15
Minor Storm 30/30/20
Major-severe storm 25/25/10