Nowcasting (earthquakes)
Nowcasting or Nowcast may refer to: * Nowcasting (economics), the estimate of the current state of the economy * Nowcasting (meteorology), the weather forecasting for a short period of up to a few hours ** 3D nowcasting, the prediction of precipitation several minutes before it occurs * NowCast (air quality index), the real time estimate of the air quality as well as the few hours prediction of ozone concentration * Nowcasting (seismology) Earthquake prediction is a branch of the science of seismology concerned with the specification of the time, location, and magnitude of future earthquakes within stated limits, and particularly "the determination of parameters for the ''next'' ...

Nowcasting (economics)
Nowcasting in economics is the prediction of the present, the very near future, and the very recent past state of an economic indicator. The term is a portmanteau of "now" and "forecasting" and originates in meteorology. It has recently become popular in economics as typical measures used to assess the state of an economy (e.g., gross domestic product (GDP)), are only determined after a long delay and are subject to revision. Nowcasting models have been applied most notably in Central Banks, who use the estimates to monitor the state of the economy in real-time as a proxy for official measures. Principle While weather forecasters know weather conditions today and only have to predict future weather, economists have to forecast the present and even the recent past. Many official measures are not timely due to the difficulty in collecting information. Historically, nowcasting techniques have been based on simplified heuristic approaches but now rely on complex econometric techniq ...
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Nowcasting (meteorology)
Nowcasting is weather forecasting on a very short term mesoscale period of up to 2 hours according to the World Meteorological Organization and up to six hours according to other authors in the field. This forecast is an extrapolation in time of known weather parameters, including those obtained by means of remote sensing, using techniques that take into account a possible evolution of the air mass. This type of forecast therefore includes details that cannot be solved by numerical weather prediction (NWP) models running over longer forecast periods. Principle Nowcasting in meteorology uses surface weather station data, wind profiler data, and any other weather data available to initialize the current weather situation and forecast by extrapolation for a period of 0 to 6 hours. In this time range it is possible to forecast small features such as individual storms with reasonable accuracy. Weather radar echoes and satellite data, giving cloud coverage, are particularly important ...
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