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5 results for “forecast”.

• How to Read a Weather Map — Pressure, Fronts and What the Clouds Will Do
  Synoptic charts look like scribbles until you learn four symbols. Then you can forecast the next twelve hours better than most phone apps.
• How River Flood Forecasts Work — and What the Flow Number Means
  "290 m³/s, at the 91st percentile of the past year" is a sentence that can decide whether you move a car to higher ground. A guide to discharge, river gauges, and satellite flood models.
• How a Weather Forecast Is Made — From Balloon to Supercomputer
  A forecast is a physics experiment the size of a planet: millions of measurements, one impossible equation, and a supercomputer that runs the atmosphere forward before the atmosphere gets there. Here is the full assembly line behind tomorrow's "70% chance of rain," and why it is both better than you think and never perfect.
• Cloud Types and What They Mean for the Weather
  Cirrus, cumulus, stratus, nimbostratus — the sky is a readable forecast if you know what each cloud is telling you. Here is the simple classification and how to use clouds to guess the next few hours.
• A Field Guide to Cloud Species: Ten Forms and What Each One Promises
  You already read the sky a little — most of us do. This guide names ten cloud forms precisely, explains what each says about the air above you, and turns "it looks cloudy" into a forecast you can make yourself.