Solar activity report
Below you'll find a daily report brought to you by the NOAA about the solar activity and auroral activity during the past day and the prediction for the coming days. This page is daily updated around midnight.
Report of Solar-Geophysical Activity 2019 Dec 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 346 Issued at 2200Z on 12 Dec 2019IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z
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 (13 Dec, 14 Dec, 15 Dec).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 451 km/s at 12/0931Z. Total IMF reached 5 nT at
12/1146Z. The maximum southward component of Bz reached -3 nT at
12/0304Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (13 Dec, 14 Dec, 15
Dec).
III. Event Probabilities 13 Dec to 15 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Dec 071 Predicted 13 Dec-15 Dec 070/070/070 90 Day Mean 12 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 11 Dec 003/003 Estimated Afr/Ap 12 Dec 005/004 Predicted Afr/Ap 13 Dec-15 Dec 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 13 Dec to 15 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 10% |
Latest news
Tuesday, 10 December 2019 - 18:50 UTC
Official Solar Cycle 25 Forecast Update
Monday, 9 December 2019 - 21:40 UTC
Welcome GOES-16!
Monday, 18 November 2019 - 20:12 UTC
Coronal hole faces Earth
Latest forum messages
- Stretch of Spotless Days 3
- Strange "Wave" Phenomenon on the Sun 11
- Ap & aa Indices and Solar Minimum 56
- New Goes-16 readings 9
- Spotless Days 2
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Space weather facts
| Last X-flare: | 2017/09/10 | X8.2 |
| Last M-flare: | 2017/10/20 | M1.0 |
| Last geomagnetic storm: | 2019/10/26 | Kp5 (G1) |
| Number of spotless days in 2019: | 268 | |
| Current stretch spotless days: | 41 | |