Viewing archive of Tuesday, 31 December 2019
Solar activity report
Report of Solar-Geophysical Activity 2019 Dec 30 2235 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 364 Issued at 2200Z on 31 Dec 2019IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z 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 (31 Dec, 01 Jan, 02 Jan).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 334 km/s at 30/0346Z. Total IMF reached 7 nT at
30/2008Z. The maximum southward component of Bz reached -4 nT at
30/1412Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (31 Dec, 01 Jan)
and quiet levels on day three (02 Jan).
III. Event Probabilities 31 Dec to 02 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Dec 071 Predicted 31 Dec-02 Jan 070/070/070 90 Day Mean 30 Dec 070
V. Geomagnetic A Indices
Observed Afr/Ap 29 Dec 000/001 Estimated Afr/Ap 30 Dec 003/004 Predicted Afr/Ap 31 Dec-02 Jan 007/008-008/008-006/005
VI. Geomagnetic Activity Probabilities 31 Dec to 02 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 20% | 20% | 10% |
All times in UTC
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