Hi

I don't usually take issue with John Hammond, but in the 1.30 PM weather on the BBC today he described the exceptional snowfall around the Great Lakes as frontal (i.e cold and warm air masses coming together), but as far as I can see, although some of that snow was frontal, the majority came about through lake-effect snow (i.e. caused by the water temperature of Lake Erie being around 8°C and the air temperature around -8°C and hence very unstable air combined with a strong westerly flow bringing continuous showers to the lakes coastal communities like Buffalo).

I did expect him to try and briefly explain lake-effect snow, and was very surprised when he churned out the "cold and warm air masses coming together" one.

I'll be interested if he uses the same graphics in the 6.30 PM broadcast.

Bruce.

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