ips-sws-alert -- Experimental Solar Wind Shock Alert


About ips-sws-alert
English (USA)

The shock detection algorithm used is a modification of an algorithm by A.G. Rubin, M.A. Heinman, E.W. Cliver, K.H Bounar and T.R. Detman, presented in a paper "Interplanetary Shock Detector Testing" from the proceedings of the "Evaluation of Space Weather Forecasts" workshop, held at Boulder, Colorado, June 19-21 1996. US DSCOVR satellite solar wind data (velocity, density, temperature, magnetic field data obtained from US Space Weather Prediction Center) are correlated with a step function to determine a shock. Shocks have been arbitrarily classified into:

Weak (velocity change <60km/sec),
Moderate (60 < velocity change < 120km/sec),
Strong (velocity change >120km/sec)

A distinct step in each of the four solar wind parameters ( velocity, density, temperature and magnetic field) is required for shock detection.
In addition, a change in solar wind velocity of at least 40km/sec, and a density ratio of at least 1.2 is required.

You can view the US DSCOVR satellite solar wind data used for this service at: DSCOVR Real Time Solar Wind

ASWFC Solar Wind Shock Alerts are an automated experimental product and false alarms and missed events are possible. Please read our product disclaimer on the SWS Home Page before using this alert. You can confirm the shock event at the above link to the DSCOVR data display at US SWPC.

To see the collection of prior postings to the list, visit the ips-sws-alert Archives.

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