Meteorix · Advanced Observation · Observed radar and LibreWXR nowcasting
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Meteorix · World RadarWorld radar · observation + nowcasting · continuous animation
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Rain · visual intensity

LightModerateHeavy
Snow · cool colours

Viper HD (10) colours indicate approximate intensity. They do not give exact thresholds or identify hail or mixed precipitation.

LibreWXR uses model data to distinguish snow from rain.

Frame time: —

Source: LibreWXR · observed radar and nowcast. Map: Natural Earth / OpenMapTiles.

Precipitation: LibreWXR · Meteorix map (Natural Earth / OpenMapTiles)

Worldwide ECMWF cloud forecast map

· Information

Explore global total, high, middle and low cloud cover forecasts from ECMWF IFS for the next 24 hours.

This layer shows ECMWF IFS forecast cloud cover (approximately 0.25°), not observed satellite imagery. Select Total, High, Middle or Low to explore forecast cloud fractions by level. In Total, grey represents low cloud, brighter white-grey represents middle cloud, and pale blue-white represents high cloud. Colours blend where layers overlap; opacity is controlled by total cloud cover (TCC), not the sum of layer fractions. This is an interpretative composite, not a measurement of exact cloud height or an identification of individual cloud types. The timeline runs from near now to +24 h, with original model steps every 3 hours and interpolated endpoints. Displayed UTC timestamps are forecast valid times. For observed clouds, use Satellite or Infrared. Source: ECMWF IFS Open Data (CC BY 4.0).

Cloud-height colour guide

Interpretative colours in the Total layer:

  • Low clouds · Grey: predominantly low cloud.
  • Middle clouds · Brighter white-grey: predominantly middle cloud.
  • High clouds · Pale blue-white: predominantly high cloud.

Colours mix where multiple layers overlap. Colour does not measure precise cloud height or rainfall intensity.

Learn meteorology: what do the clouds tell us?

Compare high, middle and low cloud layers over the next 24 hours. Their combinations offer clues about moisture and atmospheric evolution:

CombinationPossible interpretation
Extensive low cloud, little high cloudMoisture near the surface, stratus clouds or persistent overcast weather.
Extensive high cloud, little low cloudA possible approaching front, or high cloud without rainfall.
High cloud increasing, followed by middle cloudPossible evolution of a frontal system. Follow how the layers change over time.
Extensive middle and low cloudMoist air at multiple levels; precipitation may develop if there is sufficient uplift.
Extensive cloud at all three levelsAn extensive cloud system that may accompany active fronts or convection; layers may be separated and do not by themselves confirm vertically developed clouds.

This is general guidance, not an automatic diagnosis. Multiple cloud layers do not by themselves confirm rain or thunderstorms. ECMWF forecasts the fraction of sky covered in each layer; also consider precipitation, humidity, pressure and stability.