Weather Events

In general observed precipitation is significantly weaker than in fronts; or there may be no precipitation at all.

Parameter Description
Precipitation
  • No active front: large areas with no precipitation
  • Modification of old systems: remains of precipitation activity, light rain and drizzle
  • Upper Level Low: precipitation at tear - off stage
Temperature No connection (stationary)
Wind (incl. gusts) No connection (stationary)
Other relevant information

The following example represents the location "at the rear of a synoptic scale trough".

beforeafter

5 October 2019, 12UTC: IR + synoptic measurements (above) + probability of moderate rain (Precipitting clouds PC - NWCSAF).
Note: for a larger SYNOP image click this link.

The images show only very few shower and rain reports and the precipitation probability is generally very low, being higher only in the transition area between the warm front and the baroclinic boundary over Scotland. (link to legends)

beforeafter

beforeafter

5 October 2019, 12 UTC, IR ; 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)