COASTAL CONVERGENCE - WEATHER EVENTS

by FMI


Parameter Description
Precipitation
  • Enhanced convective precipitation, showers and even thunderstorms, restricted to coastal areas.
  • During wintertime possibly heavy and prolonged snowfall over coastal regions.
Temperature
  • Varying effects.
  • In winter coastal regions - surrounded by cold land on one side and open sea on the another - often experiencing sudden rises in temperature.
  • In summer temperature lower on coastal showery areas compared to inland areas having fair weather.
Wind (incl. gusts)
  • Moderate to fresh winds having a small angle with respect to the coastline.
Other relevant information  

04 - 05 December 1998/06.00 - 06.00 UTC
05 - 06 December 1998/06.00 - 06.00 UTC
06 - 07 December 1998/06.00 - 06.00 UTC
The example above illustrate accumulated precipitation in Scandinavia during a 72-hour-period. A stationary front is resulting in extensive snowfall during the whole period. Along parts of the Swedish east coast the snowfall amount is more than doubled due to the effect of Coastal Convergence.

SUB-MENU OF COASTAL CONVERGENCE
TYPICAL APPEARANCE IN VERTICAL CROSS SECTIONS
REFERENCES