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Table of Contents

Lightning

The Lightning Flash Density forecast products are available on ecCharts and can be accessed via the Layers dropdown menu.

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In the example in Fig8.1.11.1, values for Bordeaux (location shown by the pin) are given in the probe display at the top where less than 1 strike per hour average during the last 6 hours is forecast within the surrounding 100km2 by HRES.  However, ENS gives probabilities for the same period of 45% for more than 2 strikes per hour average, and 80% for more than 0.1 strikes per hour average, during the same period.

Considerations when using Lightning charts

The parametrization of total lightning flash density uses the following quantities diagnosed from the ECMWF convection scheme:

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Fig8.1.11.7: Seasonal mean lightning flash density for months SON from 15 years of observations (left) and from 10 year-long 80km IFS simulations (right).  The scale is in flashes/km2/year.  Agreement for other seasons (not shown) is much better.


Additional Sources of Information

(Note: In older material there may be references to issues that have subsequently been addressed)

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