When particularly intense weather events are approaching, when the exceptional circumstances represent a danger, a weather alert is issued. For rain, a yellow, orange or red vigilance may be announced, to invite the population to be vigilant and take the necessary precautionary measures. In some harbors, the harbor master's office will relay the announcement to the boaters to make sure that everyone has been informed.
Check the closing of the windows
Of course, this seems obvious. But sometimes, we are so obsessed by the rest, that we forget it!
Close windows and deck hatches properly, and lock them. Keep in mind that depending on the intensity, water can enter through windows that are usually protected or not exposed to rain, such as those that sometimes open into the cockpit. This is an important point, because if the rain episode lasts, the moisture received inside can cause serious problems. And it will be impossible to open your boat to dry!

Check the operation of the bilge pumps
When the event is announced, remember to check that your bilge pumps, bilge pumps and scuppers are working properly. The pump must not require your presence on board and must be activated automatically if necessary.
Charge the batteries
For the automatic bilge pumps to work, the on-board batteries must be sufficiently charged. Do not rely on solar panels, which may be less efficient in rainy weather! If you have a shore power charger, plug it in at the dock to recharge as the event approaches.

Put the bridge away
To preserve your equipment, remove or roll up all the elements that could retain rainwater: a canopy or a slightly weakened hood could retain water until it relaxes, deforms or even cracks under the effect of the weight.

Prevent the risk of leakage
If your boat has a few leaks, protect the suspected areas from the outside with a tarp. Rain events are sometimes associated with wind, so tie it down properly! If you have not been able to identify the source of the leak from the outside, have something to deal with the rain once it arrives in your boat: a mop, a basin or a bucket placed in strategic locations will help prevent damage.
Depending on the expected duration of the event, you can also install a dehumidifier on board, to prevent your interior from suffering too much from humidity.
Visit your ship
In some ports, the harbor team is responsible for regularly walking the pontoons to check that the boats are draining properly. But whether it's raining or windy, plan to come and see your vessel regularly! Come and check that all is well by opening your boat, checking the watertightness of the portholes and checking the bottom.
Stay informed
To know the evolution of the situation and the possible additional precautions to take, refer to the media and consult the weather reports, normally updated regularly.
