|
Cyclones (winter storms)
|
Tropical storms (hurricanes, typhoons)
|
Place, emergence
|
Alongside the polar front around the 45th grade of latitude.
|
In the (sub-)tropes over warm water (>26°C).
|
Season, frequency
|
Approx. 180 low-pressure areas per year over the North Atlantic, 2 to 3 of them big winter storms.
|
On average approx. 9 hurricanes per year on the Atlantic and in the Caribbean, 6 of them quite intense.
|
Mainspring
|
North-South-temperature contrast, intensity can also increase over land.
|
Condensation processes: intensity declines rapidly over land.
|
Circumference, composition
|
1000 to 2000 km, complex constitution, cold front and warm front
|
500 to 1000 km, symmetric
|
Durability
|
2 to 5 days
|
up to 10 days
|
Local storm durability
|
3 to 24 hours
|
2 to 6 hours
|
Maximum wind speed
|
70 to 180 km/h (20 to 50 m/s)
|
120 to 300 km/h (33 to 90 m/s)
|
Velocity
|
up to 120 km/h (33 m/s)
|
60 km/h (17 m/s)
|
Rainfall
|
moderate
|
heavy
|
Connoted dangers
|
storm tide
|
storm tide, tornados
|
Damages
|
Irregular strong winds causing damage over a huge area up to 1000 km away from the centre. Many small to medium damages.
|
Winds within a typical radius of no more than 200 km from the centre („eye“). Small and big damages up to total loss. </span>
|