From: Space Weather Prediction Center (NOAA)
Posted: Sunday, December 9, 2018
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 343 Issued at 2200Z on 09 Dec 2018 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity has been at very low levels for the past 24 hours. There is currently 1 numbered sunspot region on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (10 Dec, 11 Dec, 12 Dec). IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 644 km/s at 09/1703Z. Total IMF reached 11 nT at 09/1106Z. The maximum southward component of Bz reached -5 nT at 09/2034Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 427 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (10 Dec, 12 Dec) and quiet levels on day two (11 Dec). III. Event probabilities 10 Dec-12 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Dec 072 Predicted 10 Dec-12 Dec 068/068/068 90 Day Mean 09 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 08 Dec 010/007 Estimated Afr/Ap 09 Dec 005/008 Predicted Afr/Ap 10 Dec-12 Dec 009/008-005/005-007/008 VI. Geomagnetic Activity Probabilities 10 Dec-12 Dec A. Middle Latitudes Active 20/10/15 Minor Storm 05/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor Storm 25/15/25 Major-severe storm 20/15/25
// end //