Severe Thunderstorms and Heavy Rain in the Mid-South, Tennessee and Ohio Valleys

Severe thunderstorms are likely across portions of the Mid-South, Tennessee Valley, and lower Ohio River Valley today, including damaging winds, hail, and tornadoes, a few of which could be strong. Heavy to excessive rainfall, which may lead to flooding, is expected over the Tennessee and lower Ohio Valleys today. Read More >

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.

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