Weather Events

Parameter Description
Precipitation
  • Slight to moderate precipitation.
  • In the case of orographic forcing, moderate to heavy precipitation
  • In the winter season, snow or freezing rain are possible
Temperature
  • Rises after the passage of the frontal area.
Wind (incl. gusts)
  • No significant features
Other relevant information
  • Risk of moderate to severe icing
  • For Alpine countries and regions on the windward side of mountains, Detached Warm Fronts are the most active Warm Front types.

beforeafter

Legend:
20 February 2020, 12UTC: l: IR + synoptic measurements (above) + probability of moderate rain (Precipitting clouds PC - NWCSAF).
Note: for a larger SYNOP image click this link.

The demonstration example from 20 February 2020 at 12 UTC shows widespread precipitation observations mainly with the rearward two-thirds of the cloud band, with the highest intensities in the centre. This area can also be identified in the image of probability of moderate precipitation image from the NWCSAF, where probabilities are up to about 60 %

beforeafter

beforeafter

Legend:
20 February 2012, 12 UTC, IR; with the following fields superimposed:
1st row: Cloud Type (CT NWCSAF) (above) + Cloud Top Height (CTTH - NWCSAF) (below); 2nd row: Convective Rainfall Rate (CRR NWCSAF) (above) + Radar intensities from Opera radar system (below).

For identifying values for Cloud type (CT), Cloud type height (CTTH), precipitating clouds (PC), and Opera radar for any pixel in the images look into the legends. (link)