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 Mar 17 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 76 Issued at 2200Z on 17 Mar 2019IA. 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 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 (18 Mar, 19 Mar, 20 Mar).
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 467 km/s at 16/2240Z. Total IMF
reached 8 nT at 17/1855Z. The maximum southward component of Bz reached
-7 nT at 17/0904Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 675 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (18 Mar, 20
Mar) and quiet levels on day two (19 Mar).
III. Event Probabilities 18 Mar to 20 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Mar 069 Predicted 18 Mar-20 Mar 070/070/070 90 Day Mean 17 Mar 071
V. Geomagnetic A Indices
Observed Afr/Ap 16 Mar 007/010 Estimated Afr/Ap 17 Mar 014/016 Predicted Afr/Ap 18 Mar-20 Mar 007/008-005/005-009/010
VI. Geomagnetic Activity Probabilities 18 Mar to 20 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 25% |
| Major-severe storm | 20% | 15% | 30% |
Latest news
Monday, 11 March 2019 - 18:54 UTC
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Sunday, 10 March 2019 - 19:45 UTC
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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: | 2019/03/17 | Kp5 (G1) |
| Number of spotless days in 2019: | 53 | |
| Current stretch spotless days: | 6 | |