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 May 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 140 Issued at 2200Z on 20 May 2019IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z
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 (21 May, 22 May, 23 May).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 424 km/s at 20/1951Z. Total IMF reached 9
nT at 20/0322Z. The maximum southward component of Bz reached -6 nT at
19/2351Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 579 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (21 May, 22 May)
and quiet levels on day three (23 May).
III. Event Probabilities 21 May to 23 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 May 069 Predicted 21 May-23 May 068/068/068 90 Day Mean 20 May 072
V. Geomagnetic A Indices
Observed Afr/Ap 19 May 003/003 Estimated Afr/Ap 20 May 007/008 Predicted Afr/Ap 21 May-23 May 008/008-008/008-006/005
VI. Geomagnetic Activity Probabilities 21 May to 23 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 25% | 25% | 15% |
Latest news
Tuesday, 14 May 2019 - 13:07 UTC
Strong G3 geomagnetic storm
Monday, 13 May 2019 - 13:56 UTC
Filament eruption, yet another CME
Sunday, 12 May 2019 - 18:18 UTC
Faint partial halo coronal mass ejection
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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: | 2019/05/14 | Kp7 (G3) |
| Number of spotless days in 2019: | 76 | |
| Current stretch spotless days: | 3 | |