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 2018 May 27 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 147 Issued at 2200Z on 27 May 2018

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low with a slight chance for a C-class flare on days one, two, and three (28 May, 29 May, 30 May).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 376 km/s at 27/2003Z. Total IMF reached 6 nT at 27/1808Z. The maximum southward component of Bz reached -3 nT at 27/1000Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 320 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (28 May, 29 May) and quiet levels on day three (30 May).
III. Event Probabilities 28 May to 30 May
Class M 01%01%01%
Class X 01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       27 May 075
  Predicted    28 May-30 May 073/072/072
  90 Day Mean        27 May 070

V. Geomagnetic A Indices
  Observed Afr/Ap 26 May  005/003
  Estimated     Afr/Ap 27 May  005/005
  Predicted     Afr/Ap 28 May-30 May  008/008-008/008-005/005

VI. Geomagnetic Activity Probabilities 28 May to 30 May
A. Middle Latitudes
Active15%15%05%
Minor storm 05%05%01%
Major-severe storm 01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm 25%25%15%
Major-severe storm 25%25%05%
Current data suggest that it is not possible to see aurora now at middle latitudes

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