Severe thunderstorms including large hail and tornado risks are expected on Wednesday especially across Arizona and nearby parts of the Four Corners area and Lower Colorado River Valley. A localized severe risk may also exist along the coast of central/southern California.
These are weather-model forecasts, not observations.
HRRR provides an hourly short-range forecast; RRFS provides the extended forecast.
The initialization and valid time identify the forecast shown. The loop shows Pacific, Mountain, Central, Eastern time, including the date and any daylight saving changes. Other page times use your device’s timezone.