National Forecast Maps (original) (raw)

Surface Analysis

Highs, lows, fronts, troughs, outflow boundaries, squall lines, drylines for much of North America, the Western Atlantic and Eastern Pacific oceans, and the Gulf of Mexico.

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Temperature

Maximum daytime or minimum overnight temperature in degrees Fahrenheit.

Predominant Weather

Expected weather (precipitating or non-precipitating) valid at the indicated hour. The weather element includes type, probability, and intensity information.

Wind Speed and Direction

Sustained wind speed (in knots) and expected wind direction (using 36 points of a compass) forecasts.

Chance of Precipitation

Likelihood, expressed as a percent, of a measurable precipitation event (1/100th of an inch).

Sky Cover

Expected amount of opaque clouds (in percent) covering the sky.