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 Jul 22 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 203 Issued at 2200Z on 22 Jul 2017
IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z
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 (23 Jul, 24 Jul, 25 Jul).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 763 km/s at 21/2143Z. Total IMF
reached 8 nT at 22/0813Z. The maximum southward component of Bz reached
-7 nT at 22/0809Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 3619 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (23 Jul), quiet to unsettled
levels on day two (24 Jul) and quiet levels on day three (25 Jul).
III. Event Probabilities 23 Jul to 25 Jul
|Class M ||01%||01%||01%|
|Class X ||01%||01%||01%|
IV. Penticton 10.7 cm Flux
Observed 22 Jul 070
Predicted 23 Jul-25 Jul 070/070/070
90 Day Mean 22 Jul 076
V. Geomagnetic A Indices
Observed Afr/Ap 21 Jul 013/016
Estimated Afr/Ap 22 Jul 014/018
Predicted Afr/Ap 23 Jul-25 Jul 010/012-009/008-006/005
VI. Geomagnetic Activity Probabilities 23 Jul to 25 Jul
|A. Middle Latitudes|
|Minor storm ||10%||01%||01%|
|Major-severe storm ||01%||01%||01%|
|B. High Latitudes|
|Minor storm ||25%||25%||20%|
|Major-severe storm ||40%||15%||15%|