How can ところがある be translated in this sentence?

> 今夜から明日にかけてに大雨になるところがあるでしょう。

And 大雨になる? It means "is going to rain"?
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2018-05-12T05:52:38.390
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2018-05-12T09:00:02.003
2018-05-12T09:00:02.003
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question
grammar
Meaning of ところがある in this weather forecast
The literal translation of ところがある would be something like "there are places".
When the phrase is used for weather forecasting, it means the rain is not
widespread but isolated. 大雨になる means "is going to rain", yes, but since it's
with 大, the phrase suggests the rain will be heavy.
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2018-05-12T06:37:48.337
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2018-05-12T06:37:48.337
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answer