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A modification introduced in Cy50r1 improves the distribution of forecast convective precipitation, particularly inland penetration.  In this scheme, a proportion of the convective precipitation is passed to the broad scale scheme.  The precipitation can then advect according to the model winds during its descent and make progress inland.  Note that snow flakes advect further in the wind than rain because of slower fall speed.

See also section on convective cloud processes and precipitation.

Example of inland penetration of showers

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In strong winds, maritime showers could extend further inland than Ensemble Control Forecast showed because in reality:

• active maritime convective cells can persist for an hour or so.
• rain can be advected laterally during descent.  
• snow flakes drifts further than rain because of slower fall speed.

(FUG Associated associated with Cy50r1)