We're told to expect 'generally around 10-20mm'
Ronaldsway Met Office has issued a yellow weather warning for heavy rain.
Forecasters say we can expect 'persistent and quite heavy rain tonight, clearing tomorrow morning'.
The warning is in place from midnight to 10am tomorrow (Wednesday 17 September).
Totals will 'generally be around 10-20mm but may reach 30mm on some hills'.
This will give a risk of 'a little localised flooding for a time'.
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