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 2017 May 28 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 148 Issued at 2200Z on 28 May 2017
IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
28/1928Z from Region 2659 (N13W70). There are currently 1 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one and two (29 May, 30 May)
and expected to be very low with a slight chance for a C-class flare on
day three (31 May).
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
field has been at quiet to severe storm levels for the past 24 hours.
Solar wind speed reached a peak of 463 km/s at 27/2243Z. Total IMF
reached 23 nT at 27/2222Z. The maximum southward component of Bz reached
-20 nT at 27/2222Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 641 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (29 May) and quiet levels on
days two and three (30 May, 31 May).
III. Event Probabilities 29 May to 31 May
|Class M ||05%||05%||01%|
|Class X ||01%||01%||01%|
IV. Penticton 10.7 cm Flux
Observed 28 May 079
Predicted 29 May-31 May 078/072/070
90 Day Mean 28 May 076
V. Geomagnetic A Indices
Observed Afr/Ap 27 May 014/017
Estimated Afr/Ap 28 May 036/060
Predicted Afr/Ap 29 May-31 May 012/012-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 May to 31 May
|A. Middle Latitudes|
|Minor storm ||05%||01%||01%|
|Major-severe storm ||01%||01%||01%|
|B. High Latitudes|
|Minor storm ||20%||15%||15%|
|Major-severe storm ||15%||10%||10%|
Current data suggest that it is not possible to see aurora now at middle latitudes
The strength of the interplanetary magnetic field is moderate (10.39nT), the direction is North (4.71nT).
Sunday, 28 May 2017 - 14:50 UTC
Wednesday, 24 May 2017 - 13:30 UTC
Thursday, 18 May 2017 - 13:22 UTC
Today's space weather
|Predicted Kp max
|M-class solar flare
|X-class solar flare
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
|Last geomagnetic storm:||2017/05/28||Kp7 (G3)|
|Number of spotless days in 2017:||37|
|Last spotless day:||2017/05/15|
This day in history*