Throughout this evening (Monday) a spell of heavy rain is likely, culminating in a short spell of very heavy rain later in the evening. 10-15mm of rainfall is possible over a short space of time leading to the risk of localised flash flooding.
Southwesterly gusts of up to 65mph are likely for a time later on today, with the potential for a squall line developing. If a squall line does develop the Island could see gusts of up to 70mph in places.
A second spell of very wet weather will develop through the second part of tomorrow (Tuesday) as periods of rather heavy rain move in during the afternoon. This will continue until the early hours of Wednesday. Variable amounts of rain will fall across the Island but 15-20mm is possible in some parts with up to 30mm locally, leading to the risk of flooding in the usual prone locations.
Tuesday evening and overnight will also likely see another spell of severe winds, although perhaps slightly more sustained than on Monday night. Southwesterly winds will be gusting in excess of 60mph in places with exposed coasts and hills perhaps seeing 70mph at times.
Falling tree debris is likely with twigs and small branches falling. There is also a risk of fallen trees and structural damage as well as disruptions to cross Solent travel.
Due to the strong winds combined with rather large tides, forecasters are expecting a storm surge around the Isle of Wight coast. The west and south coast will see over-topping waves an hour or so either side of high tide on Monday and Tuesday night. The east coast will see some over-topping, especially on Tuesday night. Solent coasts are likely to see some minor flooding developing in places on both Monday and Tuesday night with 0.5-0.7 meters of storm surge predicted.
The yellow weather warning for rain is valid from 17:00 today until 08:00 on Wednesday 15th January. The yellow warning for severe gales is valid from 16:00 until 07:00 on Wednesday.
For further weather information visit www.iwmetservice.co.uk.