A storm system will bring rain and thunderstorms to much of the Intermountain West and northern High Plains on Friday. Isolated severe thunderstorms with large hail and damaging winds are possible from northeast California to Wyoming. Heavy rain could lead to flash flooding, especially in the mountains of Wyoming.
Short range forecast products depicting pressure patterns, circulation centers and fronts, and types and extent of precipitation.
Medium range forecast products depicting pressure patterns and circulation centers and fronts
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.
Maximum daytime or minimum overnight temperature in degrees Fahrenheit.
Expected weather (precipitating or non-precipitating) valid at the indicated hour. The weather element includes type, probability, and intensity information.
Sustained wind speed (in knots) and expected wind direction (using 36 points of a compass) forecasts.
Likelihood, expressed as a percent, of a measurable precipitation event (1/100th of an inch).
Total amount of expected liquid precipitation.
Expected amount of opaque clouds (in percent) covering the sky.
Graphical forecasts from the National Digital Forecast Database for Alaska.
Graphical forecasts from the National Digital Forecast Database for Hawaii.
Graphical forecasts from the National Digital Forecast Database for Puerto Rico and Virgin Islands.