Storm Dennis is slated to beat Hampshire this weekend bringing torrential rain, floods and travel chaos.
With an amber rain warning in place for Sunday, residents can expect homes and businesses to be flooded.
The Met Office expects that rapid deep water or flooding is likely to occur, which can be life-threatening.
In the meantime, delays and some cancellations of train and bus services are likely.
The office also predicts difficult driving conditions and good odds that some communities may be cut off by flooded roads.
Power outages and loss of other services are likely to occur in some homes and businesses.
On Saturday, a yellow wind alert was issued with some interruptions to travel probably through parts of England and Wales.
Storm Dennis is expected to bring winds of up to 70 miles per hour, causing delays in road, rail, air and ferry transportation.
Delays are likely to occur for high side vehicles on exposed paths and bridges.
While short-term power loss and other services are possible.
The Met Office expects that some coastal routes, sea fronts and coastal communities will be affected by splashes and large waves.
Both warnings cover the whole of Hampshire and start from 12:00 on Saturdays.
The wind warning is valid until midnight, while the rain warning ends at 12:00 on Sunday.
Between 15 and 30 mm of rain is widely expected, with a forecast of between 50 and 70 mm of rain for the parts of the higher ground in the west.
The Met Office says there is a “small chance of injury and life-threatening” due to flying debris and large waves.
There is also a “slight possibility” of damage to some buildings, longer travel times or cancellations of road, rail, air and ferry services.
Floods and power outages could also occur, the Met Office warned.
A spokesman for the Met Office said: “Strong winds are expected in association with Storm Dennis on Saturday in many parts of England and Wales. Gusts of 50 mph are widespread inland, with around 60 mph in places.
“Gusts of 60-70 miles per hour are likely around the coasts, especially in the west and south. Sometimes this will be accompanied by heavy rain.