- Status Report
- August 8, 2022
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 24 July 2018
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 205 Issued at 2200Z on 24 Jul 2018
IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: 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 (25 Jul, 26 Jul, 27 Jul).
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 648 km/s at 24/1554Z. Total IMF reached 15 nT at 24/0602Z. The maximum southward component of Bz reached -11 nT at 24/0636Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 307 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (25 Jul) and quiet to unsettled levels on days two and three (26 Jul, 27 Jul).
III. Event probabilities 25 Jul-27 Jul
Class M 01/01/01
Class X 01/01/01
IV. Penticton 10.7 cm Flux
Observed 24 Jul 067
Predicted 25 Jul-27 Jul 067/067/067
90 Day Mean 24 Jul 071
V. Geomagnetic A Indices
Observed Afr/Ap 23 Jul 004/004
Estimated Afr/Ap 24 Jul 014/019
Predicted Afr/Ap 25 Jul-27 Jul 014/015-009/010-009/010
VI. Geomagnetic Activity Probabilities 25 Jul-27 Jul
A. Middle Latitudes
Minor Storm 15/05/05
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 30/25/25
Major-severe storm 45/30/30