National Weather Service United States Department of Commerce

Severe Weather and Flooding Expected Across the Southern Plains, Mid South, & Ohio Valley

Strong to severe thunderstorms, including tornadoes, are expected late today and tonight and continuing through Friday from the southern Plains to the Mid South and Ohio Valley, where heavy rainfall and flooding are also likely. Elsewhere, chilly temperatures and heavy mountain snowfall will persist for parts of the West while very mild air prevails along the East Coast. Read More >

A Wind Advisory has been posted for the Mojave Desert Slopes from 500 PM PDT Wednesday afternoon until 800 AM PDT Friday morning. Wind gusts near 50 mph are expected.
Projected precipitation and snowfall totals for Monday night through Wednesday evening.
Radar loop of the current storm.

 

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Upper Air Observations


Decoded Upper Level Winds

Plotted Upper Air Soundings

GOES Derived Atmospheric Vertical Soundings

Alternate Sources for Upper Air Soundings
Ohio State

California Wind Profiler Data Can be Found Here

Why Do Forecasters Still Rely on Weather Balloons?

Twice every day, from nearly 100 locations in the United States, the National Weather Service launches weather balloons, carrying instrument packages called radiosondes. Radiosonde sensors measure upper-air conditions such as atmospheric pressure, temperature and humidity, wind speed and direction. The data is important for aviation safety, and meteorologists use radiosonde information to prepare weather forecasts.