WARM FRONT BAND - WEATHER EVENTS

by ZAMG


Warm Front Bands are connected with multi-layered cloudiness, with clearances in the warm sector. Precipitation can be found well ahead of the surface front until just after front passage.

Parameter Description
Precipitation
  • Rainbands typically 50 kilometres wide and a few hundred kilometres, usually orientated at a small angle to the surface front
  • Slight, moderate or heavy precipitation ahead of the surface front
  • In winter ahead of surface front snow, freezing rain (drizzle) is possible.
  • After the front passage small areas with drizzle (light snow in winter)
Temperature
  • Rises after the passage of the front
Wind (incl. gusts)
  • Veering of the wind at the front passage
  • Sometimes in warm sector increasing and more gusty winds
Other relevant information
  • Precipitation areas move faster than surface front (embedded in WCB).
  • Sometimes moderate to severe icing ahead of surface front
  • In wintertime in the warm sector great risk of fog
  • In warm sector low level turbulence possible
  • In summer thunder possible, most likely at the warm side of the front
  • Apart from fog in winter and spring, the warm sector a dry area with clearings


SUB-MENU OF WARM FRONT BAND
TYPICAL APPEARANCE IN VERTICAL CROSS SECTIONS
REFERENCES